Relevant bibliographies by topics / Theodolite

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Theodolite'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "Theodolite"

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Chen, Hung-Kuei, S. Jack Hu, and T. C. Woo. "Visibility Analysis and Synthesis for Assembly Fixture Certification Using Theodolite Systems." Journal of Manufacturing Science and Engineering 123, no. 1 (August 1, 1999): 83–89. http://dx.doi.org/10.1115/1.1286055.

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In automotive sheet metal assembly, part positioning and clamping is accomplished by fixtures consisting of fixture elements, such as pins and blocks. The locations of these elements are determined during process design and need to be certified during the construction and installation of an assembly line. Usually, theodolite systems are used to certify the locations of these elements by measuring the trihedron points on the fixture elements. However, no systematic method exists for the selection and placement of measuring systems. As a result, the current certification procedure is very time-consuming and is prone to error. This paper presents an algorithm for the optimal setup and placement of theodolite systems based on visibility analysis and synthesis. For a given tooling fixture, the visibility map is introduced to represent the set of potential measurement locations when a number of fixture elements are to be measured. From the set of potential measurement locations, an optimal setup will be selected based on minimizing the number of theodolite heads by optimally locating these theodolites. This approach will minimize measurement setups and improve measurement accuracy.
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Feng, Wei Dong, Wen Xu, and Xian Hong Wang. "Error Analysis and Testing on Shafting Verticality for Horizontal Photoelectric Theodolite." Advanced Materials Research 791-793 (September 2013): 1002–5. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1002.

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It is vitally important to improve effects of error compensation for horizontal photoelectric theodolite and reduce production costs by executing rational control of verticality error of shafting. This paper analyzes the mechanism how the verticality error of shafting influences measurement precision of photoelectric theodolite considering the architectural characteristics of the frame of horizontal theodolite. Matlab software has been used to simulate pointing accuracy. Verticality error of shafting of horizontal theodolite has been detected. Measured verticality error of shafting is 37 and detection error is 10. Results of analysis and detection to be applied for error compensation can improve pointing accuracy of the theodolite.
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Wang, Shou Yin, Jie Tang, and Hong Guang Li. "Topology Optimum Structural Design of the Pedestal in the Electro-Optical Theodolite." Applied Mechanics and Materials 365-366 (August 2013): 72–76. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.72.

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The pedestal of the theodolite is the main load-bearing part for the installation of the thrust bearings and torque motor stator, which is used to support the weight of the turntable and the pitching shaft system. So that the stiffness of it will have a direct impact on the ability of the theodolites capturing and tracking targets. In order to improve the overall theodolites tracking ability, to increase the stiffness of pedestal becomes more important. The 12 ribs were adopted topology optimization analysis by using the finite element software ANSYS. Through appropriately partitioning topology optimization elements and non-optimized elements, and setting optimization method, the structure of the model was optimized. The optimal ribs shape weve got under the condition of the largest stiffness pedestal structure, which reinforces the overall stiffness of the pedestal, and reduces the total weight.
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Gong, Zhi Hua, Peng Wei Duan, Xu Xu, and Hai Dong Lv. "Study on the Multi-Optical Theodolites Positioning Method Based on Function Restriction." Applied Mechanics and Materials 511-512 (February 2014): 227–33. http://dx.doi.org/10.4028/www.scientific.net/amm.511-512.227.

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Aiming at the shortcoming of the classical method of optical theodolite projection intersection named ́R ́ method and traditional data fusion method named point-by-point EMBET method, this paper advances the function restriction EMBET method which is based on multi-optical theodolites. Comparing with the three methods by simulation experiment, it demonstrates that the function restriction EMBET method has higher positioning accuracy and stronger practicability than two traditional methods. Furthermore, this method supplies the important reference value for engineering application.
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Arrasyid, Aro Qodam, and Kadenun Kadenun. "Perhitungan Arah Kiblat Masjid Menggunakan Teodolit di Kebonsari Madiun." AL-MANHAJ: Jurnal Hukum dan Pranata Sosial Islam 2, no. 2 (July 22, 2020): 195–215. http://dx.doi.org/10.37680/almanhaj.v2i2.479.

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Qibla direction is the direction that Muslims go to in carrying out worship, especially prayer. The determination of the Qibla direction in the Fatma Zahra, Al-Falah, and Baitul Muttaqin Mosques used to still use simple tools. Whereas in this day and age, all modern equipment already exists. From the differences of time, the writer is interested in studying the calculation of Qibla direction by using theodolite, by determining the direction of Qibla before using theodolite and after using theodolite. This research uses quantitative methods by collecting observational study data, interviews, and documentation to related parties. The primary source is data from interviews and direct research in the field. While the secondary data is taken from books, journals and theses related to this research. From the results of this study that the Mosques studied have not yet led to a perfect Qibla. The qibla direction in each Mosque is as follows: Qibla direction in Fatma Zahra Mosque is 650 35 '5.64'', in Al-Falah Mosque is 650 34' 21.17 '', and in Baitul Muttaqin Mosque is 650 35 '2.5''. from the direction of the Qibla which was originally the Fatma Zahra Mosque 610 05'11.28 '', Al-Falah Mosque 67009 '43.34'', and the Baitul Muttaqin Mosque 70057 '35.00'. Arah kiblat merupakan arah yang dituju umat Islam dalam melaksanakan ibadah khususnya shalat. Penentuan arah kiblat di masjid Fatma Zahra, Al-Falah, dan Baitul Muttaqin dulunya masih menggunakan alat yang sederhana. Sedangkan pada zaman sekarang ini, sudah zamannya modern semua peralatan canggih sudah ada. Dari perbedaan zaman tersebut penulis tertarik untuk mengkaji perhitungan arah kiblat dengan menggunakan alat theodolit, dengan menentukan arah kiblat sebelum menggunakan alat theodolit dan setelah menggunakan alat theodolit. Penelitian ini menggunakan metode kuantitatif dengan mengumpulkan data bersifat Studi Observasi, wawancara, dan dokumentasi kepada pihak-pihak terkait. Sebagai sumber primernya yaitu data dari hasil wawancara dan penelitian langsung di lapangan. Sedangkan data sekundernya diambil dari buku, jurnal, dan tesis yang berkaitan dengan penelitian ini. Dari hasil penelitian ini bahwa masjid-masjid yang diteliti belum mengarah ke kiblat secara sempurna. Adapun arah kiblat di masing-masing masjid adalah sebagai berikut: Arah kiblat di masjid Fatma Zahra ialah 650 35’ 5.64’’,di masjid Al-Falah ialah 650 34’ 21.17’’, dan di masjid Baitul Muttaqin ialah 650 35’ 2.5’’. dari arah kiblat yang semula masjid Fatma Zahra 610 05’11.28’’, masjid Al-Falah 67009’ 43.34’’, dan masjid Baitul Muttaqin 70057’35.00’’.
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Jian, Zhong, and Zheng Zhe. "A Video-Based Theodolite Simulation System." Advanced Materials Research 798-799 (September 2013): 272–75. http://dx.doi.org/10.4028/www.scientific.net/amr.798-799.272.

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In this paper we realized a Video-based theodolite simulation system, simulating and modeling theodolite servo control system with Simulink, build the model of theodolite movement. Split the recording video into images, and projected it onto the virtual coordinate system, then stitching images by SIFT method, the result panorama is used as background. We propose a algorithm based on gradient histogram, detect the target from the video image, then superimposed it on the background. System achieve a high degree of simulation, and reproduced the mandate process of the theodolite.
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Hegymegi, László, János Szöllősy, Csaba Hegymegi, and Ádám Domján. "Measurement experiences with FluxSet digital D/I station." Geoscientific Instrumentation, Methods and Data Systems 6, no. 2 (July 25, 2017): 279–84. http://dx.doi.org/10.5194/gi-6-279-2017.

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Abstract. Geomagnetic observatories use classical theodolites equipped with single-axis flux-gate magnetometers known as declination–inclination magnetometers (DIM) to determine absolute values of declination and inclination angles. This instrument and the measurement method are very reliable but need a lot of handwork and experience. The authors developed and built a non-magnetic theodolite which gives all measurement data in digital form. Use of this instrument significantly decreases the possibility of observation errors and minimises handwork. The new instrument is presented in this paper together with first measurement results in comparison to the classical DIM.
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Yi, Bing, Xiao Ming Zhang, Xi Jun Wang, and Zhan Fang Chen. "Component Detection Method for Measuring Precision." Applied Mechanics and Materials 681 (October 2014): 61–65. http://dx.doi.org/10.4028/www.scientific.net/amm.681.61.

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The infrared theodolite is unable to realize the practical problems of star school, put forward a set of indirect detection method for measuring accuracy of photoelectric theodolite, This method not only solves the infrared theodolite test precision,but also can be convenient for full visual field and a full range of accuracy evaluation of equipment.
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Sulistyo, Totok, Karmila Achmad, and Rahmad Bangun Giarto. "GEOMATICS ACCURACY AND PRECISION OF DETERMINATION HORIZONTAL DISTANCES IN STAKE OUT MEASUREMENT USING THEODOLITE." JUTEKS : Jurnal Teknik Sipil 4, no. 2 (October 1, 2019): 74. http://dx.doi.org/10.32511/juteks.v4i2.612.

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Stake-Out is a processes of transferring construction design to the real world so that Stake Out is highly imperative in a construction job. Stake-Out jobs in the middle and lower levels of construction industry are still using theodolite accompanying with calculator rather than using high-end instruments. The results of the study show that theodolite has lower accuracy compared to Total Station and other high-end instruments, such as GPS Geodetic and Laser Scanner. This research is aimed to determine the accuracy and precision of Theodolite in determining the horizontal distance of Stake Out measurement which staff reading is simulated using android App (Stake Out Guide). The results of experiment showed that the accuracy of Theodolite is 0.025 m meanwhile the precision is 0.12%.
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Xia, Linyuan. "From Theodolite to Satellite." Survey Review 38, no. 300 (April 2006): 446–51. http://dx.doi.org/10.1179/sre.2006.38.300.446.

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Dissertations / Theses on the topic "Theodolite"

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Bingley, R. M. "Electronic theodolite intersection systems." Thesis, University of Nottingham, 1990. http://eprints.nottingham.ac.uk/14248/.

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The development of electronic surveying instruments, such as electronic theodolites, and concurrent advances in computer technology, has revolutionised engineering surveying; one of the more recent examples being the introduction of Electronic Theodolite Intersection Systems (ETISs). An ETIS consists of two or more electronic theodolites and a computer, with peripheral hardware and suitable software. The theoretical principles on which they are based have been known for a long time, but intersection has seldom been used as a method of measurement. The main reasons for its re-evaluation were the introduction of one-second electronic theodolites and the ability to interface these on-line to a computer. The last decade has seen the development of several commercially available systems and probably even more in-house developed systems. Such systems are capable of performing real-time, non-contact, three-dimensional coordinate determination to a high accuracy, enabling their use in a wide variety of applications. This thesis details all aspects of ETISs. Initially, the theoretical principles on which the systems are based are developed. The components of a system are then detailed and a review of current commercially available systems and their applications is given. The thesis then concentrates on the development of an ETIS by the author and details its' application in both industrial measurement and deformation monitoring. Finally, the thesis concludes with a discussion on the factors affecting the accuracies attainable with ETISs.
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Price, W. F. "Monitoring of glulam structures by theodolite intersection." Thesis, University of Nottingham, 2002. http://eprints.nottingham.ac.uk/14491/.

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The use of glued laminated timber (glulam) in building and construction provides a designer with an attractive, environmentally friendly alternative to steel and concrete. However, along with other engineering materials, glulam is subject to creep and in order to use it efficiently without the risk of unacceptable long-term deflections occurring, a reliable method of estimating creep in glulam is desirable. With this mind, the Structural Timber Research Unit (STRU) at the University of Brighton embarked, in 1988, on an extensive glulam research programme. Since then, the deflection of prepared glulam specimens has been measured in the laboratory under controlled conditions and in 1992, the programme was broadened to include measurements to determine the behaviour of glulam in full-scale structures. A number of test sites have been established in a variety of buildings and the method chosen to monitor glulam beams in these is theodolite intersection using a Leica Electronic Coordinate Determination System (ECDS3). Borrowed from industrial and engineering surveying, the use of the theodolite intersection technique to monitor glulam is unique and it has, despite the practical difficulties and size of structure involved, enabled the movement of beams to be monitored with an accuracy of 0.1 mm. By processing three-dimensional intersection coordinates, vertical deflections and creep have been determined and results show that the creep response of the glulam beams monitored in full-scale structures can be represented by a seasonally modulated exponential function. This correlates well to results from the laboratory tests and demonstrates that measurements taken in the laboratory can predict the behaviour of glulam in-situ. The creep factors obtained also agree well with the values given for these in Eurocode 5: Design of Timber Structures.
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Huang, Yi Dong. "Three dimensional measurement based on theodolite-CCD cameras." Thesis, University College London (University of London), 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309243.

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Chen, Dongbin. "Development of a 3D video-theodolite image based survey system." Thesis, University of East London, 2003. http://roar.uel.ac.uk/3555/.

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The scope of this thesis is to investigate and to develop a zoom lens videotheodolite system, which is formed by a zoom lens CCD camera, a motorised theodolite and a computer with the developed system software. A novel automatic calibration procedure is developed for the zoom lens CCD video-theodolite system. This method is suitable for the efficient calibration of any other video-theodolite system used in fieldwork. A novel image edge detection algorithm is developed. The maximum directional edge detection algorithm depends on the maximum directional gradient to judge the edges in an image. A novel line detection algorithm based on the Hough lines transform was developed for the applications of the video-theodolite system. This new algorithm can obtain not only the line parameters of r and 9 but also the data of the two terminal image points of the detected line. A novel method of constructing panoramic images from sequential images is developed based on the zoom lens video-theodolite system. It is effectively applied in the system to generate a panorama of a scene. A novel image matching algorithm is developed. The line features are matched with the constraint of epipolar lines. Through an experiment to match real world buildings, it is shown that the novel stereo matching algorithm is robust and effective. Another novel image matching algorithm is also developed. This algorithm is used to automatically measure the image displacement between the stereo images for the video-theodolite system. The accuracy of the zoom lens video-theodolite system is evaluated by three experiments. The measuring accuracy of this system can be within 0.09 pixels. The software of this system based on PC system is developed. It has a standard MFC windows interface with menu controls. This system software includes the control functions, measuring functions and image processing functions for the zoom lens video-theodolite system.
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Vassallo, Victor Hugo. "Razões trigonométricas: uma abordagem do cotidiano." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/5407.

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Este trabalho foi desenvolvido a partir da necessidade do estudo das Razões Trigonométricas. Em geral, sabemos que no ensino básico a Matemática se apresenta de forma descontextualizada. Propomosaquiumaabordagemhistóricadesteassuntoeaformacomo é apresentada nos livros didáticos. A partir daí, apresentamos uma série de atividades que envolve construções realizadas com régua e compasso, utilização de um software de geometria dinâmica e a montagem de um teodolito. O objetivo desta proposta baseia-se na possibilidade de se trabalhar este material em uma turma da 1a série do ensino médio mesmo em uma escola com poucos recursos, mostrando que é possível estudar matemática relacionando-a às necessidades que permeiam a humanidade há séculos.
This work was developed from the necessity of the study of Trigonometric Reasons. In general, we know that in the basic education the Mathematics presents itself in a decontextualized way. We propose here a historical approach to this subject and the way it is presented in textbooks. From there, we present a series of activities that involve constructions performed with ruler and compass, use of dynamic geometry software and the assembly of a theodolite. The objective of this proposal is based on the possibility of working this material in a class of the 1st grade of high school even in a school with few resources, showing that it is possible to study mathematics relating it to the needs that have permeated humanity for centuries.
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Amorim, Jose Alves de. "A geometria plana no ensino fundamental: estudo prático sobre o teodolito." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/55/55136/tde-18112016-191415/.

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Este trabalho teve como finalidade o estudo prático de construção de figuras geométricas utilizando instrumentos disponíveis na própria escola. A situação problema apresentada buscou verificar como pode ser possível determinar a medida de regiões inacessíveis através de cálculos e relações geométricas. Para alcançar o objetivo proposto, ou seja, a utilização prática deste instrumento de medida foi realizada a construção de um Teodolito caseiro, com materiais de baixo custo e que estavam à disposição na própria escola. Por fim, as medidas e os cálculos realizados pelos alunos foram discutidos em sala de aula, analisando possíveis dificuldades e conhecimento adquiridos durante o processo de ensino aprendizagem.
This work aimed to study the practical construction of geometric figures using tools available at the school. The problem situation presented aims to evaluate how it can be possible to determine the extent of inaccessible areas by calculation and geometric relationships. To achieve the proposed objective, the practical use of this measuring instrument, building a Theodolite \"homemade\" was held, with low-cost materials that were available at the school. Finally, the measurements and calculations performed by the students were discussed in class, analyzing possible difficulties and knowledge acquired during the teaching-learning process.
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Horeličan, Tomáš. "Měření pozice pohybujících se objektů pomocí robotické totální stanice." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442533.

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Práca sa zaoberá objavujúcim sa nekonvenčným využitím moderných teodolitov, tiež známych ako Robotické Totálne Stanice (RTS), ako sledovací a navádzací systém, určením presnej pozície dynamicky sa pohybujúceho objektu. To sa týka najmä situácií, kde nie je možné využiť konvenčné polohovacie systémy akým je napríklad GNSS. Kinematicky určená poloha objektu kontinuálne sledujúcou RTS môže byť následne v reálnom čase využitá pre autonómnu navigáciu malých bezpilotných leteckých prostriedkov (UAV) poskytnutím referenčného súradnicového systému a okamžitej polohy v ňom. Podstatná časť práce je venovaná návrhu a realizácii vhodných experimentov, ktoré overia spoľahlivosť určovania presnej polohy objektu v presnom časovom okamžiku. Boli preverené stanice série S7 a S9 od spoločnosti Trimble a stanica S9 HP, ktorá disponuje frekvenciou kontinuálneho merania až do 10 Hz bola napokon využitá pre experimenty. Lokálny čas ovládacieho panelu TSC7, ktorý zabezpečuje komunikáciu so stanicou bol pomocou protokolu PTP synchronizovaný s lokálnym časom mini-počítača Raspberry Pi, ktorý následne poskytoval referenčné meranie skutočnej polohy objektu v čase. V závere sú zhrnuté výsledky experimentov.
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Knoblach, Stefan. "Entwicklung, Kalibrierung und Erprobung eines kameraunterstützten Hängetachymeters." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25323.

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Trotz aller technischen Weiterentwicklungen in der Vergangenheit unterscheiden sich moderne elektronische Tachymeter in ihrer Grundkonstruktion nicht wesentlich von ihren analogen Vorgängern. Ihnen allen ist gemeinsam, dass eine Visur um den Nadir nicht möglich ist. Dies bedeutet, dass Punkte, welche sich in einem Zenitwinkelbereich zwischen ca. 170 und 230 gon befinden, nicht direkt gemessen werden können. Gegenstand der vorliegenden Arbeit war daher die Entwicklung eines Systems, mit welchem tachymetrische Messungen auch in einem Zenitwinkelbereich zwischen 170 und 230 gon möglich sind. Das Konzept basiert auf dem aus dem Markscheidewesen bekannten Hängetheodolit. Um Messungen im Bereich des Nadirs durchführen zu können, wird ein Tachymeter ähnlich einem Hängetheodolit in hängender Position montiert. In dieser Position ist der zur Horizontierung dienende interne elektronische Neigungskompensator jedoch nicht funktionsfähig. Die Horizontierung wird daher extern überwacht. Zu diesem Zweck wird das Tachymeter über eine geeignete Aufhängevorrichtung mit einem Neigungssensor verbunden. Die Kombination aus in hängender Position montiertem Tachymeter und externem Neigungssensor wird als Hängetachymeter bezeichnet. Bei der Kombination des Systems mit einem externen Neigungssensor kann eine geringe Abweichung zwischen der Stehachse des Tachymeters und der Lotachse des Neigungssensors fertigungsbedingt nicht vermieden werden. Zur Bestimmung dieser Abweichung wurden geeignete Verfahren entwickelt und auf ihre Genauigkeit untersucht. Die mit dem Tachymeter ermittelten Messwerte werden durch Instrumentenabweichungen beeinflusst und müssen um diese korrigiert werden. Auch sind die Messwerte um die mit dem externen Neigungssensor ermittelte Stehachsenneigung zu korrigieren. Die Achsenabweichungen des Tachymeters müssen in hängender Position bestimmt werden. Es kann nicht generell vorausgesetzt werden, dass diese mit den in aufrechter Position bestimmten Werten übereinstimmen. Zur Steuerung des Hängetachymeters wurde eine Software entwickelt, in welche die Kalibrierung der Sensoren, die Auswertung und Korrektur der Messwerte, deren Speicherung und Weiterverarbeitung sowie der Datenexport integriert wurden. Eine Kombination des Hängetachymeters mit einer Okularkamera ermöglicht die automatische Zielerkennung und -verfolgung nichtsignalisierter Punkte auch bei Messungen nahe dem Nadir. Zur Realisierung eines Autofokus wurde das Hängetachymeter mit einem Schrittmotor kombiniert, welcher über den Fokussierring des Tachymeters die Fokussierlinse bewegt. Eine Autofokusfunktion wurde auf Grundlage des Bildkontrastes entwickelt. Die Kalibrierung der Okularkamera basiert auf einer Modellierung des Abbildungsprozesses durch lineare Funktionen. Hierbei wurde die Abhängigkeit der Kalibrierwerte von der Position der Fokussierlinse (Position des Schrittmotors) aufgezeigt. Die zur optischen Zielerkennung eingesetzten Bildverarbeitungsalgorithmen gliedern sich in eine manuelle Punktanzielung im Bild, die Messung punktförmiger Muster durch Kantendetektion und Ellipsenanpassung und Bildzuordnungsverfahren nach der Methode der kleinsten Quadrate. Um die Leistungsfähigkeit des Hängetachymeters zu bestimmen, aber auch um die Güte der Kalibrierung zu testen, wurden mehrere Genauigkeitsuntersuchungen durchgeführt. Abschließend wurde das Hängetachymeter auch erfolgreich in der Industrievermessung eingesetzt und eine automatische Kalibrierroutine ohne Interaktion des Benutzers entwickelt. Die erreichten Genauigkeiten des Systems liegen im Bereich der Genauigkeiten des eingesetzten Tachymeters
Despite all technical enhancements in the past modern electronic tacheometers do not differ significantly to their analogue predecessors. All have in common that aiming around the nadir is not possible. This means that points situated in the zenith angle region between ca. 170 to 230 gon cannot be measured directly. Therefore the subject of the present work was the development of a system that makes measurements in the zenith angle region between 170 and 230 gon possible. The concept is based upon the suspended theodolite which is known in mine-surveying. To carry out measurements in the region of the nadir a total station is mounted in a hanging position similar to a suspended theodolite. However the function of the tilt compensator which is used for levelling of the instrument is not supported in this position. Hence inclination is monitored externally. For this purpose the tacheometer is connected to a clinometer by an appropriate suspension arrangement. The combination of a tacheometer mounted in a suspended position and an external clinometer is called suspended tacheometer. Combining the system with an external clinometer a marginal variation occurs between the vertical axis of the tacheometer and the plummet axis of the clinometer due to production conditions. To quantify this variation an appropriate method was developed and its accuracy tested. Measurements conducted by the tacheometer are influenced by the variations of the instrument and must therefore be adjusted. Moreover these measurements must be adjusted by the inclination detected by the external clinometer. The axis variations of the tacheometer must be determined in suspended position. It cannot be generally presumed that these measurements comply with the ones determined in upright position. To actuate the suspended tacheometer a software was developed. This software also offers integrated functions for calibration of the sensors, analysis and adjustment of the measurements and their storage and processing as well as export of data. A combination of the suspended tacheometer with an ocular camera makes automatic target detection and tracking of non-cooperative signals possible also when measuring near the region of the nadir. To realize an autofocus the suspended tacheometer was combined with a stepper motor which moves the focus lens. Based on the image contrast an autofocus function was developed. The calibration of the ocular camera is based on modelling the mapping process by linear functions. Here the dependency of calibration values on the position of the focus lens (position of the stepping motor) was demonstrated. Image processing algorithms used for optical target detection can be divided into manual target detection in the image, measurement of point-shaped patterns by edge detection and ellipse adjustment and image allocation operations (Least squares matching). To determine the efficiency of the suspended tacheometer as well as to test the performance of the calibration several accuracy tests were performed. Also the suspended tacheometer was successfully deployed in industrial surveying. An automatic calibration routine without participation of a user was developed. The achieved accuracies of the system correspond with the accuracies of the inserted tacheometer
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Wechel, Robert Van. "GPS - A POINTING AID FOR THEODOLITES, LASER TRACKERS AND THREAT EMITTERS." International Foundation for Telemetering, 1990. http://hdl.handle.net/10150/613794.

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International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The GPS equipment developed in the tri-service GPS range applications program is now available for use. One promising application on test and training ranges is for pointing control of theodolites, laser trackers, and threat emitters. Theodolites and laser trackers are capable of extremely high accuracy in range applications, but suffer from a very narrow acquisition range, thus requiring external acquisition aiding. Unmanned threat emitters are also used that require external pointing information. In this application of GPS, a GPS receiver or translator is used on the test or training vehicle, and the position of the vehicle is downlinked to the tracking site. A pointing angle is then computed at the tracking site and is used to point or steer the theodolite, laser tracker, or threat emitter. Because of the high accuracy, of differential GPS, this method is very precise. Also, with a direct high-rate datalink, time delays for the pointing information can be very low, again providing very accurate pointing for high-dynamic vehicles. This method promises to be a highly cost-effective approach for steering these devices because it eliminates the requirement for continuous manning of the sites.
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Travis, Georgia-Rose. "Boat preference and stress behaviour of Hector's dolphin in response to tour boat interactions." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/303.

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Dolphins are increasingly coming into contact with humans, particularly where tourism is involved. It has been assumed that such contact causes chronic stress on dolphin populations. This study examined relatively naive populations of Hector's dolphins and their interaction with various watercrafts. Dolphins in New Zealand have been observed using theodolites and boat-based observations over the last two decades, particularly on the east side of the South Island at Akaroa, which is situated on the coast line of Banks Peninsula. This research was undertaken using shore-based theodolite tracking to observe boat activity around the coast of Lyttelton and Timaru and their associated Harbours. Observations were made mostly over two periods each of six months duration and included the months October through to March during the years 2000-2001 and 2001-2002. Observations made during a third period in 2005 were also incorporated for some of the analyses. Field investigations using a theodolite included more than 376 hours/site/season and recorded dolphin behaviour both with and without the presence of tour boats. Of primary interest were the tours, which ran regular trips to observe Cephalorhynchus hectori in their natural habitat. Hector's dolphins at both Lyttelton and Timaru were consistently observed with particular boat types and not with other types of water craft. Dolphins at Timaru exhibited a greater range of behaviours than those at Lyttelton. Stress-related behaviours such as an increase in swimming speed to open ocean and grouping behaviour were only observed in the presence of boats. Other potential stress behaviours, such as head slaps and repeated tail slaps, were only performed in the absence of boats. Observations implied that some generic dolphin behaviours, which often indicate stressed individuals may not apply to Hector's dolphins, and therefore question the assumption that all dolphin species behave in similar ways. We suggest that low-level tourist boat activity is not placing undue stress on the population. In addition to theodolite observations, tour boat based observations of Hector's dolphin were undertaken and behaviour at each site recorded for a focal animal. Tour boat-based observations concentrated on determining any preference to bow, stern, portside and starboard sides of the vessel. Dolphins consistently showed a preference in direction of approach and departure from tour vessels with a strong tendancy to the bow of the boat, and least with the stern. These results were similar irrespective of site or vessel. Behaviour data were also collected from tour boat vessels over 48 trips/season/site and the data divided into transitional behaviour groups, which included stress behaviours, association / interaction behaviour and neutral behaviour. Behavioural count and time data were collected to reflect the number of times and duration of behaviour occurrence, particularly in relation to transitional behaviours. Determining the presence of stress in Hector's dolphins varied between the data sets and indicated that time is a necessary factor when attempting to determine whether an individual or a general population is genuinely stressed. Quadrant preference and swimming direction in relation to the Black Cat were observed over six years, and both count and time data were collected with regard to behaviour. The results were consistent with preference in quadrant being expressed towards the bow of the boat and least with the stern. The count data suggested no significant impact on Hector's dolphin behaviour in the presence of the Black Cat over time, where time data indicated there was a transition over the years from neutral behaviour in the second year of tour boat activity, to positive behaviour in the third year of boat-activity and finally avoidance behaviour in the seventh year of tour boat activity at Lyttelton Harbour in response to the presence of the Black Cat.
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Books on the topic "Theodolite"

1

Davies, Clive. Theodolite EDM book: With instructions. Exeter: Old Abbey Press, 1989.

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Chen, Dongbin. Development of a 3D video-theodolite image based survey system. London: University of East London, 2003.

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American Society of Photogrammetry. Meeting. Theodolite to satellite: Technical papers, 51st annual meeting, ASP : 1985 ASP-ACSM Convention, Washington, D.C., March 10-15, 1985. Falls Church, Va: American Society of Photogrammetry, 1985.

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Modern theodolites and levels. 2nd ed. Oxford: BSP Professional, 1987.

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Spiridonov, A. I. Teodolity. Moskva: "Nedra", 1985.

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Wassef, Attallah M. An investigation into the characteristics of electronic theodolites. Mississauga, Ont: University of Toronto, Erindale Campus, Survey Science, 1989.

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Gralow, Klaus-Dieter. Unterwegs mit Theodolit und Ochsenwagen: Landmesser Hugo Voss in Südwestafrika (1907-1919). Swakopmund, Namibia: Wissenschaftliche Gesellschaft Swakopmund, 2010.

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La cultura architettonica a Roma nel secolo XVIII: Gerolamo Theodoli (1677-1766). Roma: Bulzoni, 1991.

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Price, W. F. Monitoring of glulam structures by theodolite intersection. 2002.

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Gillespie, W. M. (William Mitchell). A treatise on land-surveying: Comprising the theory developed from five elementary principles; and the practice with the chain alone, the compass, the ... the theodolite, the plane table, and c. ... University of Michigan Library, 2001.

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Book chapters on the topic "Theodolite"

1

Galehouse, Jon S., F. Brett Baker, Oliver Graves, and Theresa Hoyt. "San Francisco Bay region fault creep rates measured by theodolite." In The San Andreas Transform Belt: Long Beach to San Francisco, California July 20–29, 1989, 45–48. Washington, D. C.: American Geophysical Union, 1989. http://dx.doi.org/10.1029/ft309p0045.

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Li, Hai-yan, and Yun-an Hu. "Correction Method for Photoelectric Theodolite Measure Error Based on BP Neural Network." In Communications in Computer and Information Science, 225–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-18129-0_36.

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Yang, Zaihua, Shaohua Meng, and Wei Zhang. "An Attitude Metrology Based on Gyro-Theodolite for the Optical Cube Reference on Spacecraft." In Lecture Notes in Electrical Engineering, 518–26. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4163-6_62.

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Matthews, Volker. "Der Theodolit." In Vermessungskunde, 159–92. Wiesbaden: Vieweg+Teubner Verlag, 1993. http://dx.doi.org/10.1007/978-3-322-94742-0_11.

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Matthews, Volker. "Der Theodolit." In Vermessungskunde 1, 167–200. Wiesbaden: Vieweg+Teubner Verlag, 2003. http://dx.doi.org/10.1007/978-3-322-84882-6_11.

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Matthews, Volker. "Der Theodolit." In Vermessungskunde, 167–200. Wiesbaden: Vieweg+Teubner Verlag, 1996. http://dx.doi.org/10.1007/978-3-322-94061-2_11.

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Matthews, Kurt. "Der Theodolit." In Vermessungskunde, 7–44. Wiesbaden: Vieweg+Teubner Verlag, 1986. http://dx.doi.org/10.1007/978-3-322-93882-4_2.

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He, Zhenxin, Chuntong Liu, Hongcai Li, Zhili Zhang, and Xianxiang Huang. "Finite Time Proportional-Integral Sliding Mode Control of Theodolite Aiming Chaotic Motor with Time Varying Parameters." In Lecture Notes in Electrical Engineering, 965–75. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-08991-1_101.

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Jackson, Myles W. "From Theodolite to Spectral Apparatus: Joseph von Fraunhofer and the Invention of a German Optical Research-Technology." In Instrumentation Between Science, State and Industry, 17–28. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-9032-2_2.

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Uren, J., and W. F. Price. "Theodolites and their Use." In Surveying for Engineers, 78–126. London: Macmillan Education UK, 1994. http://dx.doi.org/10.1007/978-1-349-12950-8_3.

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Conference papers on the topic "Theodolite"

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Jia, Kang, Ruihua He, Gang Fu, Wenjun Su, and Zhigang Liu. "A Lightweight Framework of R-LATs for Large-Scale Application." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10383.

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Abstract Rotate laser automatic theodolite system (R-LATs) is a distributed larger volume metrology system. With considering its excellent parallel measurement capability and the adaptive expansion of measureable space, R-LATs has a good prospect in large scale application, e.g. as a space measurement solution for an entire factory room to fix the spatial coordinate measurement, AGV navigation, and large component alignment etc. However, in large application scenario, where multiple theodolites are adopted, the photosensors suffer heavy working load in distinguishing the theodolite of each fan laser. It seriously restricts the real-time character, raises the probability of wrong signal generation, and degrades the work performance of R-LATs distinctly. To overcome this bottleneck, this paper proposed a lightweight framework for R-LATs to lighten the work load of photosensor in distinguishing the theodolites. Firstly, the working principle of R-LATs and the visibility of theodolite were introduced. Then, the whole frame work of R-LATs was designed in three aspects to relieve the work load of photosensor, i.e. topological network construction for entire R-LAT, data structure design for both compute terminal and photosensor, and the dynamic schedule of the data process unit for entire R-LATs. At last, by simulating AVG navigation in a large scale application of R-LATs, the effectiveness of this paper was proofed by comparing the computational loads with traditional configuration.
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Loser, Raimund, John Rogers, and Stephen Kyle. "Kern space theodolite calibration." In Close-Range Photogrammetry Meets Machine Vision. SPIE, 1990. http://dx.doi.org/10.1117/12.2294285.

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Bradley, Lester M., John P. Corriveau, and Nan E. Tindal. "Launch area theodolite system." In Orlando '91, Orlando, FL, edited by Michael K. Masten and Larry A. Stockum. SPIE, 1991. http://dx.doi.org/10.1117/12.45684.

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Lin Nan, Zhou Qing-wen, Pan Jie, and Zheng Xu-dong. "Bluetooth Technology Applied in Theodolite." In 2013 Fifth International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2013). IEEE, 2013. http://dx.doi.org/10.1109/icmtma.2013.89.

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Huang, Yongmei, Jiaguang Ma, and Chengyu Fu. "Velocity-forecast filters of theodolite." In AeroSense 2003, edited by Michael K. Masten and Larry A. Stockum. SPIE, 2003. http://dx.doi.org/10.1117/12.486852.

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Silva Sthel, Marcelo, and Rodolfo Moreira de Castro. "Simple method of theodolite alignment using laser." In Second Iberoamerican Meeting on Optics, edited by Daniel Malacara-Hernandez, Sofia E. Acosta-Ortiz, Ramon Rodriguez-Vera, Zacarias Malacara, and Arquimedes A. Morales. SPIE, 1996. http://dx.doi.org/10.1117/12.231018.

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Zhou, Hu, Jigui Zhu, Zili Zhang, and Shenghua Ye. "Resolution improvement of the electronic theodolite in automatic guided laser theodolite system by subdivided locating method of image." In International Conference of Optical Instrument and Technology, edited by Shenghua Ye, Guangjun Zhang, and Jun Ni. SPIE, 2008. http://dx.doi.org/10.1117/12.807057.

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Shengxiong, Wu, Tong Henwei, Xiong Rensheng, and Li Yingcai. "A New Kind Of High Speed Cine-Theodolite." In 18th Intl Congress on High Speed Photography and Photonics, edited by DaHeng Wang. SPIE, 1989. http://dx.doi.org/10.1117/12.969118.

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Hou, Hong-lu, and Wei Wang. "Multi-photoelectric theodolite deployment optimization of intersection measurement." In 2009 4th IEEE Conference on Industrial Electronics and Applications. IEEE, 2009. http://dx.doi.org/10.1109/iciea.2009.5138964.

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Liu nian and Wu zhan-ping. "Digital Theodolite wind measurement system design and implementation." In 2008 Chinese Control and Decision Conference (CCDC). IEEE, 2008. http://dx.doi.org/10.1109/ccdc.2008.4597617.

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Reports on the topic "Theodolite"

1

Wetmore, Alan E. Handheld Theodolite Concept. Fort Belvoir, VA: Defense Technical Information Center, April 2011. http://dx.doi.org/10.21236/ada540992.

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Newitt, L. R., and G. Jansen van Beek. The magnetometer theodolite as an absolute instrument. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1990. http://dx.doi.org/10.4095/225656.

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Chang-Fa, L. The CJ6 magnetic theodolite and the CTM-302 three-component fluxgate magnetometer of the institute of geophysics, Academia Sinica, China. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/226571.

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Gilbert, D., J. M. Cantin, J. Bitterly, R. Schlich, and J. Folques. Absolute measurements of the earth's magnetic filed in French observatories: results obtained with the portable theodolite fluxgate magnetometer for the period 1979-86. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/226576.

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Coles, R. L. Some analytic expressions concerning errors associated with theodolites used for absolute magnetic measurements. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/315219.

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Theodolite measurements of creep rates on San Francisco Bay region faults: technical report. US Geological Survey, 1990. http://dx.doi.org/10.3133/1394.

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