Relevant bibliographies by topics / Distance measuring instruments, Electronic – Calibration

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

Academic literature on the topic 'Distance measuring instruments, Electronic – Calibration'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Distance measuring instruments, Electronic – Calibration"

1

Šiaudinytė, Lauryna, Mindaugas Rybokas, and Vytautas Giniotis. "ANALYSIS OF ANGLE MEASUREMENTS AND A NEW APPROACH TO VERTICAL ANGLE CALIBATION / VERTIKALIŲJŲ KAMPŲ KALIBRAVIMO ANALIZĖ IR NAUJI KALIBRAVIMOBŪDAI / AНAЛИЗ УГЛOВЫХ ИЗМЕРЕНИЙ И НОВЫE МEТOДЫ КАЛИБРИРOВАНИЯ." Geodesy and Cartography 37, no. 4 (January 11, 2012): 149–53. http://dx.doi.org/10.3846/13921541.2011.645333.

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Testing and calibrating geodetic instruments is an important metrological procedure for precise instrumentation used in industry and geodesy. Electronic geodetic measuring instruments consist, among other elements, of circular scales and angular encoders for angle determination in two perpendicular horizontal and vertical planes. The accuracy of the instrument mostly depends on the accuracy of angle standards used for angle calibration in the horizontal plane. Although many methods are developed for angle calibration, the majority of those are not available for calibrating angles in the vertical plane. The method described in the International Standards of vertical angle calibration validates field testing geodetic instruments by taking precise angle readings between the calibrated points placed at long distance and height. Difficulties in creating such calibration basis and inconveniencies in proceeding with this field at long distances may appear. Also, the traceability of length and angle measurements is not ensured. The new method of calibrating the angles in the vertical plane for geodetic instruments was developed. The article describes the principle of indoor testing and the calibration of the vertical angle measuring system. Santrauka Daugelyje optinių elektroninių matavimo prietaisų yra įmontuotos apskritiminės skalės, skirtos kampinei padėčiai dviejose statmenose plokštumose – horizontaliojoje bei vertikaliojoje nustatyti. Prietaiso tikslumas daugiausia priklauso nuo sių skalių tikslumo. Rastrinių skalių metrologija yra gana specifinė sritis, būtina tam tikra metodika ir kalibravimo įranga. Trumpai apžvelgus pateikiami kai kurie būdai ir priemonės, taikytini kampų metrologijai, ypač vertikaliam plokščiajam kampui kalibruoti. Резюме Многие оптико-электронные измерительные инструменты состоят из круговых шкал для определения углов в двух перпендикулярных плоскостях – горизонтальной и вертикальной. Точность инструмента в основном зависит от точности этих угломерных шкал. Метрология угловых растровыx шкал довольно специфична и требует специфических мeтодов и приспособлений для калибрирования. В статье приводится обзор и некоторые простые способы и приспособления, которые можно использовать в метрологии углов, в частности, в калибрировании вертикального плоского угла.
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Gillis, D., and L. Nabe. "Calibration baselines in canada." CISM journal 42, no. 3 (January 1988): 207–15. http://dx.doi.org/10.1139/geomat-1988-0020.

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The establishing, measuring and monitoring of Electronic Distance Measurement (EDM) cali¬bration baselines in Canada is a joint program of the Geodetic Survey of Canada and provincial, territorial and municipal surveying agencies. Since its establishment in 1971, the 2.3 km National Geodetic Baseline (NGBL) in Ottawa has been used as the reference baseline for other calibration baselines; two precise EDM instruments, the Mekometer ME3000 and the Geomensor CR204, have been used to transfer the length standard of the NGBL to baselines across Cana¬da. Thirty-six calibration baselines, established as part of the National Baseline Program, now exist. The Geodetic Survey strives to maintain the published values of interpier distances at the highest accuracy possible. To this end, extensive remeasurements are being planned. For longer distances which may be required to calibrate or check GPS instruments, a calibration network with lines up to 222 km is being established.
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3

Pillarz, Marc, Axel von Freyberg, and Andreas Fischer. "Gear Shape Parameter Measurement Using a Model-Based Scanning Multi-Distance Measurement Approach." Sensors 20, no. 14 (July 14, 2020): 3910. http://dx.doi.org/10.3390/s20143910.

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To reduce wind turbine failures by defective drive trains, deviations in the geometry of large gears (diameter ≳ 1 m) must be extensively determined with single-digit micrometer uncertainties. Fixed measuring volumes limit standard measuring methods like coordinate and gear measuring instruments for large gear measurements. Therefore, a model-based scanning multi-distance measurement approach for gear shape parameters is presented. The measurement approach has a scalable design and consists of a confocal-chromatic sensor, rotary table as a scanning unit and model-based signal processing. A preliminary study on a midsize spur gear demonstrates the general feasibility of the model-based scanning multi-distance measurement approach. As a result, the mean base circle radius as the fundamental gear shape parameter is determined with an uncertainty of <5 μm. The calibration and adjustment of the sensor arrangement were performed with a known calibration gear. Scalability is not experimentally validated in this article. However, simulations verify the scalability of the measurement approach in a first step. For gears with 1 m in diameter and varying tooth flank geometries, the estimated achievable uncertainty of the mean base circle radius is still <5 μm. Therefore, the model-based scanning multi-distance measurement approach is a promising alternative for gear inspection.
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Zhang, Gao, Niu, Pei, Bi, and Sun. "Calibration of the Pulse Signal Decay Effect of Full-Waveform Hyperspectral LiDAR." Sensors 19, no. 23 (November 29, 2019): 5263. http://dx.doi.org/10.3390/s19235263.

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Full-waveform hyperspectral LiDAR (FWHSL) is able to obtain spectral and spatial information by utilizing a single instrument, and it has become more and more commonly used in vertical distribution studies of structural and biochemical characteristics of vegetation. However, the pulse-echo arrival times of multiple spectral channels of the FWHSL are not consistent and this causes range ambiguity in spectral channels. In this paper, the pulse signal decay effect on range measurements was studied by measuring the varying trends of pulse signal decay between spectral channels with different material properties. The experiments were repeated at different distances. All of the spectral channels were compared for different materials. The results suggest that the channels in the red edge spectral region of vegetation have good stability and accuracy for range measurements of varied distance and materials properties. Finally, based on the geometric invariability in a specific red edge channel, a practical calibration approach for the pulse signal decay effect is also presented. The validation tests showed it could improve the pulse signal decay effect of full-waveform hyperspectral LiDAR.
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Downing, B. J. "Improved instrumental accuracy for microwave electronic distance-measuring instruments." Electronics Letters 22, no. 6 (1986): 307. http://dx.doi.org/10.1049/el:19860210.

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Pogliano, U., and G. C. Bosco. "Automatic calibration of precision and programmable AC measuring instruments at IEN." IEE Proceedings - Science, Measurement and Technology 143, no. 4 (July 1, 1996): 259–62. http://dx.doi.org/10.1049/ip-smt:19960529.

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Pueo, Marcos, Raquel Acero, Ángel Gracia, and Jorge Santolaria. "Measuring Sensors Calibration in Worm Gear Rolling Testers." Sensors 20, no. 11 (June 2, 2020): 3148. http://dx.doi.org/10.3390/s20113148.

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The ISO standard regulating gear-rolling measurement does not specify in detail the calibration and verification procedures for this type of equipment. This may be one of the reasons for the lack of reproducibility in these rolling tests. The uncertainty budget method, which is the most appropriate way to know the accuracy of this dynamic measurement, shows that the measuring sensors’ accuracy is only a part of the total measurement process uncertainty. In this work, a new calibration and verification procedure for a worm gear rolling tester is presented, based on machine tool, coordinate measuring machine and gear measuring instruments’ calibration techniques. After compensating numerically for the measuring instruments, it has been evaluated how the error components of each movement affect the meshing point, a fundamental factor to ensure a good gear transmission. The study shows that there are unintentional position variations, not detected by the measuring sensors, that have to be identified and quantified in the calibration for their later inclusion in the uncertainty budget. In this way, the measurement uncertainty could be reduced, and thus improve the reproducibility of these testers, as a preliminary stage to the development of optimized rolling measurement equipment to solve current limitations.
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Giniotis, Vytautas, Donatas Rekus, and Česlovas Aksamitauskas. "ACCURACY CALIBRATION OF THE BARS OF LEVELLING METERS." Geodesy and cartography 33, no. 4 (August 3, 2012): 102–5. http://dx.doi.org/10.3846/13921541.2007.9636728.

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Precision levelling is one of the most common geodetic measuring operations. The most modern geodetic instruments are quite sophisticated digital instruments that are supplied by photoelectric sensor arrays and optical–electronic cameras that fix the height values of terrain according to the position of the levelling meter that is placed on it. The marks on the levelling meters are also modified and consist of coded strokes put on the meter’s surface in a specific order. The accuracy of the performance of all the measuring equipment depends mostly on the accuracy of the position of those strokes. This paper deals with an analysis of an accuracy calibration of levelling meters, its methods and means of evaluation.
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Kumar, Rahul, P. K. Dubey, Afaqul Zafer, Ashok Kumar, and Sanjay Yadav. "Past, present and future of blood pressure measuring instruments and their calibration." Measurement 172 (February 2021): 108845. http://dx.doi.org/10.1016/j.measurement.2020.108845.

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Balakireva, S. D., and A. V. Ekimov. "Determination and adaptive correction of calibration intervals of measuring instruments and systems." Measurement 10, no. 4 (October 1992): 165–69. http://dx.doi.org/10.1016/0263-2241(92)90024-x.

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Dissertations / Theses on the topic "Distance measuring instruments, Electronic – Calibration"

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Du, Plessis Jan Harm. "An all-fibre laser distance measurement system utilising figure-eight fibre lasers with electro-optic amplitude modulation." Thesis, 2010. http://hdl.handle.net/10210/3417.

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M.Ing.
The aim of this project is to research the feasibility of an all-fibre laser distance measurement device that utilises a figure-eight fibre laser (F8L), in the nonlinear amplifying loop mirror (NALM) configuration, as a light source and implements pulse compression to improve the accuracy and signal-to-noise ratio of the system. A figure-eight fibre laser in the NALM configuration for use in a laser distance measurement device is described. The theory of fibre lasers is discussed, including mode-locking and Qswitching, and the characteristics of a NALM loop are analysed. By varying the length of the NALM loop from 500 m to 2000 m or inserting highly nonlinear dispersion shifted fibre, a variety of pulses in the picosecond to nanosecond range can be produced. The lengths of the pulses depend on the length of the NALM loop, the pump power and the setting of the polarisation controllers. The figure-eight fibre laser is pumped with a 980 nm laser diode up to 550 mA, which corresponds to 320 mW. Distance measurements are done with short unmodulated and long modulated pulses. Distance measurement with short unmodulated pulses is discussed only briefly and tested with a simple experiment. The focus of this project is distance measurement with long modulated pulses. A low autocorrelated binary sequence is modulated onto one of the long pulses produced by the figure-eight fibre laser by an electro-optic amplitude modulator. The long pulse gives the proposed system a good signal-to-noise ratio (SNR), while the modulation improves the accuracy. A Barker code of length 13 is proposed as modulation code because of its good autocorrelation properties. The Barker code will improve the accuracy 13-fold, with a corresponding increase in SNR. An electro-optic amplitude modulator is used to implement the modulation. The modulated long pulse is then sent to a target. After reflection, the signal is detected and cross-correlated to obtain the time-of-flight for the pulse. The code generation and cross-correlation are implemented with an FPGA via VHDL programming. The distance to a target can be calculated by knowing the time-of-flight and the speed of light in the propagation medium. In this project the resolution, single-shot precision, accuracy, linearity, repeatability and maximum unambiguous distance of the proposed all-fibre laser distance measurement device are examined.
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Books on the topic "Distance measuring instruments, Electronic – Calibration"

1

Permanent-glass EDM measurements on Kilauea, Hawaii from June 6, 1979 to September 23, 1987. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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2

Geological Survey (U.S.), ed. Permanent-glass EDM measurements on Kilauea, Hawaii from June 6, 1979 to September 23, 1987. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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Geological Survey (U.S.), ed. Permanent-glass EDM measurements on Kilauea, Hawaii from June 6, 1979 to September 23, 1987. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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4

Geological Survey (U.S.), ed. Permanent-glass EDM measurements on Kilauea, Hawaii from June 6, 1979 to September 23, 1987. [Denver, Colo.?]: Dept. of the Interior, U.S. Geological Survey, 1988.

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5

Two FORTRAN programs for the reduction of atmospheric data collected by aircraft along EDM survey lines. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1985.

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6

Geological Survey (U.S.), ed. EDM station descriptions for Mauna Kea, Mauna Loa, and Hualalai Island of Hawaii. [Denver, Colo.?]: U.S. Dept. of the Interior, Geological Survey, 1987.

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Geological Survey (U.S.), ed. EDM station descriptions for Mauna Kea, Mauna Loa, and Hualalai Island of Hawaii. [Denver, Colo.?]: U.S. Dept. of the Interior, Geological Survey, 1987.

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Geological Survey (U.S.), ed. EDM station descriptions for Mauna Kea, Mauna Loa, and Hualalai Island of Hawaii. [Denver, Colo.?]: U.S. Dept. of the Interior, Geological Survey, 1987.

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Book chapters on the topic "Distance measuring instruments, Electronic – Calibration"

1

"Electronic Distance Measuring Instruments." In Surveying Instruments and their Operational Principles, 546–612. Elsevier, 1991. http://dx.doi.org/10.1016/b978-0-444-98829-4.50015-1.

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Conference papers on the topic "Distance measuring instruments, Electronic – Calibration"

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Forde, Lucy C., and Eleanor F. Howick. "Development of a calibration system for electronic distance measuring instruments." In Lasers in Metrology and Art Conservation, edited by Jennifer E. Decker and Nicholas Brown. SPIE, 2001. http://dx.doi.org/10.1117/12.445609.

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Forde, Lucy C., and Eleanor F. Howick. "Extension of traceable calibration for electronic distance measuring instruments beyond the length of the laboratory." In Optical Science and Technology, SPIE's 48th Annual Meeting, edited by Jennifer E. Decker and Nicholas Brown. SPIE, 2003. http://dx.doi.org/10.1117/12.503649.

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Yuan, Yuan, Feng Jianqiang, Jiang Ning, Jia Zhuanzhuan, and Li He. "Study on calibration of impulse current measuring system." In 2017 13th IEEE International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2017. http://dx.doi.org/10.1109/icemi.2017.8265978.

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4

Li Zhanfeng and Zhang Jianping. "A Step-step Calibration Method Based on Two-eye Stereo Vision Measuring Robot." In 2007 8th International Conference on Electronic Measurement and Instruments. IEEE, 2007. http://dx.doi.org/10.1109/icemi.2007.4350497.

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Xin, Shi, Qiu Lei, Tian Li, Liang Miaozhu, and Yi Lizheng. "Short-term load forecasting for electric vehicle charging stations based on time series distance measuring." In 2017 13th IEEE International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2017. http://dx.doi.org/10.1109/icemi.2017.8265838.

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Buga, Arunas, and Raimundas Putrimas. "Twenty Years of Experience Running Calibration Baseline." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.171.

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The authors of the paper are sharing their 20 years of experience in using Kyviškės Calibration Baseline. The Kyviškės Calibration Baseline (1320 m) is the longest calibration baseline in Lithuania. The baseline is calibrated regularly with 5–7 years period. The first time these measurements were performed in 1997 and repeated in 2001, 2007, 2008 and 2014. The same Kern Mekometer ME5000 EDM (electronic distance measurement) instrument was used for all the measurements performed. By building additional pillar aside from the baseline pillars the Kyvišk2s Baseline was converted to a triangle-shaped test field in 2000. The results confirm good stability of the baseline, which is now used for calibration of the EDM instruments, total stations and GNSS (global navigation satellite system) receivers.
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