Journal articles: 'Electronic distance measurement'

1

Buchanan, Hugh. "Electronic distance measurement." Physics of the Earth and Planetary Interiors 70, no. 1-2 (February 1992): 133–34. http://dx.doi.org/10.1016/0031-9201(92)90169-v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Parker, David H. "Attenuated retroreflectors for electronic distance measurement." Optical Engineering 45, no. 7 (July 1, 2006): 073605. http://dx.doi.org/10.1117/1.2227013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Braun, Jaroslav, Filip Dvořáček, and Martin Štroner. "Absolute Baseline for Testing of Electronic Distance Meters." Geoinformatics FCE CTU 12 (June 3, 2014): 28–33. http://dx.doi.org/10.14311/gi.12.5.

Full text

Abstract:

The paper deals with the construction and determination of coordinates of the absoluteEDMs baseline in a laboratory with 16 pillars with forced centring. Leica Absolute TrackerAT401 (standard deviation of distance measurement: 5 μ m, standard deviation of anglemeasurement: 0.15 mgon), which is designed for very accurate industrial measurements,was used for our purpose. Lengths between the baseline points were determined with astandard deviation of 0.02 mm. The baseline is used for determining systematic and randomerrors of distance meters and for accuracy of distance meters at short distances commonin engineering surveying for purposes of mechanical engineering.

APA, Harvard, Vancouver, ISO, and other styles

4

Zakari, D. M., and A. Aliyu. "Establishment of Baseline using Electronic Distance Measurement." IOSR Journal of Environmental Science, Toxicology and Food Technology 8, no. 1 (2014): 79–85. http://dx.doi.org/10.9790/2402-08147985.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Peretto, L., S. Rapuano, M. Riccio, and D. Bonatti. "Distance learning of electronic measurements by means of measurement set-up models." Measurement 41, no. 3 (April 2008): 274–83. http://dx.doi.org/10.1016/j.measurement.2006.11.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Braun, Jaroslav, Martin Štroner, Rudolf Urban, and Filip Dvořáček. "Suppression of Systematic Errors of Electronic Distance Meters for Measurement of Short Distances." Sensors 15, no. 8 (August 6, 2015): 19264–301. http://dx.doi.org/10.3390/s150819264.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Loughlin, Clive. "Ultrasonic measurement: keeping your distance." Sensor Review 9, no. 2 (February 1989): 85–89. http://dx.doi.org/10.1108/eb007792.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Li Zhidong, 李志栋, 江月松 Jiang Yuesong, 桑峰 Sang Feng, 王林春 Wang Linchun, 邓士光 Deng Shiguang, 辛遥 Xin Yao, and 郭泾平 Guo Jingping. "Interferometry for Absolute Distance Measurement." Acta Optica Sinica 31, no. 3 (2011): 0314001. http://dx.doi.org/10.3788/aos201131.0314001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Steynberg, Gustav, and Geyhard Koch. "Loop Selective Direction Measurement for Distance Protection." Journal of Electrical Engineering and Technology 1, no. 4 (December 1, 2006): 423–26. http://dx.doi.org/10.5370/jeet.2006.1.4.423.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Ding, Yong-wei, Xiao-hu Yang, Gen-cai Chen, and A. J. Kavs. "Radian-distance Based Time Series Similarity Measurement." Journal of Electronics & Information Technology 33, no. 1 (February 28, 2011): 122–28. http://dx.doi.org/10.3724/sp.j.1146.2010.00136.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Shin, Seungin, Min-Hyun Kim, and Seibum B. Choi. "Ultrasonic Distance Measurement Method With Crosstalk Rejection at High Measurement Rate." IEEE Transactions on Instrumentation and Measurement 68, no. 4 (April 2019): 972–79. http://dx.doi.org/10.1109/tim.2018.2863999.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Usanov, D. A., A. V. Skripal, E. I. Astakhov, I. S. Kostuchenko, and S. Yu Dobdin. "SELF-MIXING INTERFEROMETRY FOR DISTANCE MEASUREMENT USING A SEMICONDUCTOR LASER WITH CURRENT-MODULATED WAVELENGTH." Computer Optics 42, no. 1 (March 30, 2018): 54–59. http://dx.doi.org/10.18287/2412-6179-2018-42-1-54-59.

Full text

Abstract:

The capabilities of the method of current-modulated laser wavelength are shown to be extended by using harmonic modulation. Advantages of the sawtooth modulation method associated with using the frequency measurements of the interference signal as an information parameter have been researched. Advantages of the harmonic-type modulation based on the use of measurement results for spectral component amplitudes of the interference signal for distance determination have also been investigated. A comparative analysis of methods for absolute distance measurements at the existing capabilities of semiconductor laser wavelength modulation has demonstrated the benefits of the harmonic modulation of laser diode current for distances under 30 cm, showing the sawtooth current modulation to work better for distances greater than 50 cm.

APA, Harvard, Vancouver, ISO, and other styles

13

Hundt, D. G., and W. L. Stutzman. "Pattern measurement distance for broad beam antennas." Journal of Electromagnetic Waves and Applications 8, no. 2 (January 1, 1994): 221–35. http://dx.doi.org/10.1163/156939394x00056.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Pillarz, Marc, Axel von Freyberg, Dirk Stöbener, and Andreas Fischer. "Gear Shape Measurement Potential of Laser Triangulation and Confocal-Chromatic Distance Sensors." Sensors 21, no. 3 (January 30, 2021): 937. http://dx.doi.org/10.3390/s21030937.

Full text

Abstract:

The demand for extensive gear shape measurements with single-digit µm uncertainty is growing. Tactile standard gear tests are precise but limited in speed. Recently, faster optical gear shape measurement systems have been examined. Optical gear shape measurements are challenging due to potential deviation sources such as the tilt angles between the surface normal and the sensor axis, the varying surface curvature, and the surface properties. Currently, the full potential of optical gear shape measurement systems is not known. Therefore, laser triangulation and confocal-chromatic gear shape measurements using a lateral scanning position measurement approach are studied. As a result of tooth flank standard measurements, random effects due to surface properties are identified to primarily dominate the achievable gear shape measurement uncertainty. The standard measurement uncertainty with the studied triangulation sensor amounts to >10 µm, which does not meet the requirements. The standard measurement uncertainty with the confocal-chromatic sensor is <6.5 µm. Furthermore, measurements on a spur gear show that multiple reflections do not influence the measurement uncertainty when measuring with the lateral scanning position measurement approach. Although commercial optical sensors are not designed for optical gear shape measurements, standard uncertainties of <10 µm are achievable for example with the applied confocal-chromatic sensor, which indicates the further potential for optical gear shape measurements.

APA, Harvard, Vancouver, ISO, and other styles

15

Kienle, Patrick, Lorena Batarilo, Markus Akgül, Michael H. Köhler, Kun Wang, Martin Jakobi, and Alexander W. Koch. "Optical Setup for Error Compensation in a Laser Triangulation System." Sensors 20, no. 17 (September 1, 2020): 4949. http://dx.doi.org/10.3390/s20174949.

Full text

Abstract:

Absolute distance measurement is a field of research with a large variety of applications. Laser triangulation is a well-tested and developed technique using geometric relations to calculate the absolute distance to an object. The advantages of laser triangulation include its simple and cost-effective setup with yet a high achievable accuracy and resolution in short distances. A main problem of the technology is that even small changes of the optomechanical setup, e.g., due to thermal expansion, lead to significant measurement errors. Therefore, in this work, we introduce an optical setup containing only a beam splitter and a mirror, which splits the laser into a measurement beam and a reference beam. The reference beam can then be used to compensate for different error sources, such as laser beam dithering or shifts of the measurement setup due to the thermal expansion of the components. The effectiveness of this setup is proven by extensive simulations and measurements. The compensation setup improves the deviation in static measurements by up to 75%, whereas the measurement uncertainty at a distance of 1 m can be reduced to 85 μm. Consequently, this compensation setup can improve the accuracy of classical laser triangulation devices and make them more robust against changes in environmental conditions.

APA, Harvard, Vancouver, ISO, and other styles

16

Hernández, Sergio Elias, Leopoldo Acosta, and Jonay Toledo. "Distance and Cable Length Measurement System." Sensors 9, no. 12 (December 16, 2009): 10190–200. http://dx.doi.org/10.3390/s91210190.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Pillarz, Marc, Axel von Freyberg, and Andreas Fischer. "Determination of the mean base circle radius of gears by optical multi-distance measurements." Journal of Sensors and Sensor Systems 9, no. 2 (August 20, 2020): 273–82. http://dx.doi.org/10.5194/jsss-9-273-2020.

Full text

Abstract:

Abstract. The required reliability of wind turbine gearboxes increases the requirements for large gear measurements. Extensive measurements to reliably assess the geometry of large gears in the single micrometer range are necessary. Due to an individually fixed measuring volume, standard methods like coordinate and gear measuring instruments reach their limits for large gears with diameters > 1 m. Therefore, a scalable optical measurement approach consisting of a single sensor in combination with a rotary table for multi-distance measurements with subsequent model-based evaluation of shape parameters of gears is presented. The scalable measurement approach is to be extended to a multisensory system in further work. As a fundamental shape parameter the mean base circle radius using the example of spur gears is determined. The base circle radius is used due to the geometric relationship to further shape parameters for example to the profile slope deviation. The theoretically achievable measurement uncertainty of the mean base circle radius due to sensor noise is estimated to less than 5 µm (k=2) for a small and a large gear, which verifies the scalability of the sensor system. In order to show a general proof of principle, two series of optical measurements on a gear with a diameter of 0.105 m are performed and referenced with a tactile measurement. As a result, random errors of 1.2 µm for k=2 are determined. The remaining systematic deviations to the reference value amount to 4.3 and 1.6 µm, respectively. Hence, the total measurement uncertainty is currently limited by systematic effects, and the defined aim of a total uncertainty of less than 5 µm (k=2) is narrowly missed by 1.5 µm. The random errors of 1.2 µm (k=2) show, however, that an adequate measurement precision is achieved and that the multi-distance measurement approach has the potential to reach the aimed measurement uncertainty with appropriate strategies to compensate for the systematic influences. The experimental and theoretical results prove the principle applicability of the proposed single sensor multi-distance approach for the precise inspection of gears.

APA, Harvard, Vancouver, ISO, and other styles

18

Elmer, Hannes, Herbert Schweinzer, and Gottfried Magerl. "Hochauflösende Ultraschall-Entfernungsmessung für große Distanzen (High Resolution Ultrasonic Distance Measurement for Long Distances)." tm - Technisches Messen 70, no. 4-2003 (April 2003): 173–79. http://dx.doi.org/10.1524/teme.70.4.173.20186.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Azouigui, Shéhérazade, Thomas Badr, Jean-Pierre Wallerand, Marc Himbert, José-Antonio Salgado, Jean-Paul Senelaer, Frédéric Kwasnik, and Patrick Juncar. "Transportable Distance Measurement System for Long-Range Applications." IEEE Transactions on Instrumentation and Measurement 60, no. 7 (July 2011): 2678–83. http://dx.doi.org/10.1109/tim.2010.2099291.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Kim, J. H., and H. K. Choi. "Antenna Radiation Pattern Measurement at a Reduced Distance." IEEE Transactions on Instrumentation and Measurement 54, no. 2 (April 2005): 673–75. http://dx.doi.org/10.1109/tim.2004.843419.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

da Fonseca, Joao Quinta, Michael Preuss, P. Ryan, and Philip J. Withers. "Mechanical Property Mapping Using Image Correlation and Electronic Speckle Interferometry." Applied Mechanics and Materials 1-2 (September 2004): 147–52. http://dx.doi.org/10.4028/www.scientific.net/amm.1-2.147.

Full text

Abstract:

By combining modern surface strain measurement techniques with the traditional tensile test mechanical test, a method has been developed whereby the mechanical properties of a test sample with a heterogeneous microstructure such can be characterised in one test. In this paper the applicability to such a method of two such surface strain measurement techniques, image correlation (IC) and electronic speckle pattern interferometry (ESPI), is assessed. Two commercially available systems were used to monitor, simultaneously, the surface strain on tensile test specimens during testing. Measurements on homogeneous samples were compared with measurements made using strain gauges and excellent agreement was found. Elastic modulus and proof stress values measured in these standard samples showed that the uncertainty in the measurements was below 10%. The method was then applied to an inertia friction weld, whose strength varied linearly as a function of distance from the weld line. The values of proof stress obtained were compared with micro-hardness measurements.

APA, Harvard, Vancouver, ISO, and other styles

22

Han, Yi Chiew, and Chia Hern Lai. "Walking Distance Estimation Using a Shank-Mounted Inertial Measurement Unit and Vertical Distance Sensor." IEEE Sensors Journal 21, no. 15 (August 1, 2021): 17219–26. http://dx.doi.org/10.1109/jsen.2021.3080620.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Shimizu, Yuichiro, and Yukitoshi Sanada. "Accuracy of relative distance measurement with ultra wideband system." Electronics and Communications in Japan (Part III: Fundamental Electronic Science) 87, no. 12 (2004): 26–36. http://dx.doi.org/10.1002/ecjc.20075.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Kuang, W. T., and A. S. Morris. "Ultrasonic Doppler distance measurement technique for robot tracking system." Electronics Letters 35, no. 11 (1999): 942. http://dx.doi.org/10.1049/el:19990615.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Jiafa, Mao, Huang Wei, and Sheng Weiguo. "Target distance measurement method using monocular vision." IET Image Processing 14, no. 13 (November 1, 2020): 3181–87. http://dx.doi.org/10.1049/iet-ipr.2019.1293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

MICEA, M. V., A. STANCOVICI, D. CHICIUDEAN, and C. FILOTE. "Indoor Inter-Robot Distance Measurement in Collaborative Systems." Advances in Electrical and Computer Engineering 10, no. 3 (2010): 21–26. http://dx.doi.org/10.4316/aece.2010.03004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Piccoli, B., M. D'Orso, P. L. Zambelli, P. Troiano, and R. Assini. "Observation distance and blinking rate measurement during on-site investigation: new electronic equipment." Ergonomics 44, no. 6 (May 2001): 668–76. http://dx.doi.org/10.1080/00140130119673.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

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.

Full text

Abstract:

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.

APA, Harvard, Vancouver, ISO, and other styles

29

Schicht, Andreas, Klaus Huber, Andreas Ziroff, Michael Willsch, and Lorenz-Peter Schmidt. "Absolute Phase-Based Distance Measurement for Industrial Monitoring Systems." IEEE Sensors Journal 9, no. 9 (September 2009): 1007–13. http://dx.doi.org/10.1109/jsen.2009.2025582.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Carullo, A., and M. Parvis. "An ultrasonic sensor for distance measurement in automotive applications." IEEE Sensors Journal 1, no. 2 (2001): 143. http://dx.doi.org/10.1109/jsen.2001.936931.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Nemecek, A., K. Oberhauser, and H. Zimmermann. "Distance measurement sensor with PIN-photodiode and bridge circuit." IEEE Sensors Journal 6, no. 2 (April 2006): 391–97. http://dx.doi.org/10.1109/jsen.2006.870164.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Ptak, Paweł. "SIMULATION PROGRAMS IN DISTANCE LEARNING." SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 5 (May 28, 2021): 436–47. http://dx.doi.org/10.17770/sie2021vol5.6305.

Full text

Abstract:

In the era of the development of computer technology, methods were created that enable teaching, not only through direct contact with the student, but also through the computer network and the Internet. In order for this to be possible, programs allowing this type of activity had to be created. They are to model the operating conditions of electronic and measurement systems in virtual space as much as possible. Such programs must reflect the operation of such systems under operating conditions, taking into account disturbing signals. They should also be adapted to remote work via the Internet. In the era of epidemics, when the possibilities of teaching in the classical form are very limited or impossible, simulation programs working in a network environment may make sense. The results of modeling the operation of systems in virtual reality and the created measurement systems can be sent electronically. This allows their verification with the laboratory teacher and joint work on the project by a group of students during the laboratory classes.

APA, Harvard, Vancouver, ISO, and other styles

33

Sy, Luke Wicent F., Nigel H. Lovell, and Stephen J. Redmond. "Estimating Lower Limb Kinematics Using a Lie Group Constrained Extended Kalman Filter with a Reduced Wearable IMU Count and Distance Measurements." Sensors 20, no. 23 (November 29, 2020): 6829. http://dx.doi.org/10.3390/s20236829.

Full text

Abstract:

Tracking the kinematics of human movement usually requires the use of equipment that constrains the user within a room (e.g., optical motion capture systems), or requires the use of a conspicuous body-worn measurement system (e.g., inertial measurement units (IMUs) attached to each body segment). This paper presents a novel Lie group constrained extended Kalman filter to estimate lower limb kinematics using IMU and inter-IMU distance measurements in a reduced sensor count configuration. The algorithm iterates through the prediction (kinematic equations), measurement (pelvis height assumption/inter-IMU distance measurements, zero velocity update for feet/ankles, flat-floor assumption for feet/ankles, and covariance limiter), and constraint update (formulation of hinged knee joints and ball-and-socket hip joints). The knee and hip joint angle root-mean-square errors in the sagittal plane for straight walking were 7.6±2.6∘ and 6.6±2.7∘, respectively, while the correlation coefficients were 0.95±0.03 and 0.87±0.16, respectively. Furthermore, experiments using simulated inter-IMU distance measurements show that performance improved substantially for dynamic movements, even at large noise levels (σ=0.2 m). However, further validation is recommended with actual distance measurement sensors, such as ultra-wideband ranging sensors.

APA, Harvard, Vancouver, ISO, and other styles

34

Pichler, Markus, Stefan Schwarzer, Andreas Stelzer, and Martin Vossiek. "Multi-Channel Distance Measurement With IEEE 802.15.4 (ZigBee) Devices." IEEE Journal of Selected Topics in Signal Processing 3, no. 5 (October 2009): 845–59. http://dx.doi.org/10.1109/jstsp.2009.2030935.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Bregains, J., F. Ares, and E. Moreno. "Effects of measurement distance on measurements of symmetrically shaped patterns generated by line sources." IEEE Antennas and Propagation Magazine 45, no. 1 (February 2003): 106–9. http://dx.doi.org/10.1109/map.2003.1189654.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Xue, Bin, Zhiyang Wang, Haoyun Zhang, Kai Zhang, Yang Chen, Mingzhao He, Baike Lin, and Hanzhong Wu. "Absolute Distance Measurement by Self-Heterodyne EO Comb Interferometry." IEEE Photonics Technology Letters 30, no. 9 (May 1, 2018): 861–64. http://dx.doi.org/10.1109/lpt.2018.2820710.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Wu, Hanzhong, Fumin Zhang, Tingyang Liu, Fei Meng, Jianshuang Li, and Xinghua Qu. "Absolute Distance Measurement Using Optical Sampling by Cavity Tuning." IEEE Photonics Technology Letters 28, no. 12 (June 15, 2016): 1275–78. http://dx.doi.org/10.1109/lpt.2016.2538266.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Zhu, J. H., N. N. Zheng, Z. J. Yuan, S. Y. Du, and L. Ma. "Robust scaling iterative closest point algorithm with bidirectional distance measurement." Electronics Letters 46, no. 24 (2010): 1604. http://dx.doi.org/10.1049/el.2010.2844.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Usanov, D. A., A. V. Skripal, S. Yu Dobdin, A. V. Dzhafarov, and I. S. Sokolenko. "Limiting capabilities of self-mixing interferometry upon sawtooth modulation of a semiconductor laser wavelength." Computer Optics 43, no. 5 (October 2019): 796–802. http://dx.doi.org/10.18287/2412-6179-2019-43-5-796-802.

Full text

Abstract:

This paper discusses a self-mixing interferometry method for measuring distances upon sawtooth modulation of the wavelength of laser radiation. Conditions under which the distance obtained from the spectrum of the modeled autodyne signal coincides with the distance specified in computer simulation are determined. The limiting capabilities of the method are theoretically substantiated for the increased range of deviations of the laser wavelength. The estimation of the limiting capabilities of the distance measurement method on the spectrum of the autodyne signal gives 10 microns at a wavelength of 650 nm at a 5-nm deviation of laser radiation wavelength. We also discuss difficulties of attaining the limiting accuracy of distance measurements associated with the nonlinear dependence of the wavelength emitted by a laser diode on its supply current and the need to analyze the self-mixing signal at high frequencies.

APA, Harvard, Vancouver, ISO, and other styles

40

Tsuneishi, Yukimasa. "Continuous Monitoring of Crustal Activity in East Izu Peninsula by Automatic Electronic Distance Measurement." Journal of Physics of the Earth 39, no. 1 (1991): 131–39. http://dx.doi.org/10.4294/jpe1952.39.131.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Zimmermann, E., Y. Salvadé, and R. Dändliker. "Stabilized three-wavelength source calibrated by electronic means for high-accuracy absolute distance measurement." Optics Letters 21, no. 7 (April 1, 1996): 531. http://dx.doi.org/10.1364/ol.21.000531.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Lim, Chung Han. "Topographic Survey and Modelling using Photogrammetry: A Comparison against Electronic Distance Measurement (EDM) Method." ASM Science Journal 16 (September 7, 2021): 1–9. http://dx.doi.org/10.32802/asmscj.2021.720.

Full text

Abstract:

Topographic surveying has been an important companion to the civil engineer in the development of human civilization since ancient history. It is used to map terrestrial features on the ground along with its contour heights. Application of this can be seen in the establishing land boundaries and setting out construction projects. Conventional methods of surveying range from ground field methods such as the use of total station to aerial surveys such as photogrammetry or LiDAR. This study looks to assess the feasibility of aerial photogrammetry using UAVs as a replacement to the conventional EDM survey using total stations. This objective was achieved by carrying out both photogrammetric and EDM surveys on a 350m long stretch of highway. The resulting survey data were processed to produce two comparative TIN surfaces of the highway which were then superimposed together and compared for accuracy. It could be observed that on plan view, both surfaces were quite closely matched with a maximum difference of less than 0.4m and a low standard deviation. In elevation view, however, the differences were larger with maximums of 5.0m, accompanied by large standard deviations. RMS error analysis carried out also correlate with the findings.

APA, Harvard, Vancouver, ISO, and other styles

43

Burgarth, V., C. Zhang, and A. Abou-Zeid. "Absolut messendes Diodenlaserinterferometer (Diode Laser Interferometer for Absolute Distance Measurement)." tm - Technisches Messen 70, no. 2-2003 (February 2003): 53–58. http://dx.doi.org/10.1524/teme.70.2.53.20105.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

An, Sining, Zhongxia Simon He, Jianguo Li, Jianping An, and Herbert Zirath. "Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring." IEEE Sensors Journal 20, no. 6 (March 15, 2020): 2919–27. http://dx.doi.org/10.1109/jsen.2019.2955746.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Mendoza-Silva, German Martin, Joaquin Torres-Sospedra, Francesco Potorti, Adriano Moreira, Stefan Knauth, Rafael Berkvens, and Joaquin Huerta. "Beyond Euclidean Distance for Error Measurement in Pedestrian Indoor Location." IEEE Transactions on Instrumentation and Measurement 70 (2021): 1–11. http://dx.doi.org/10.1109/tim.2020.3021514.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Han, Yulan, and Chongzhao Han. "Two Measurement Set Partitioning Algorithms for the Extended Target Probability Hypothesis Density Filter." Sensors 19, no. 12 (June 13, 2019): 2665. http://dx.doi.org/10.3390/s19122665.

Full text

Abstract:

The extended target probability hypothesis density (ET-PHD) filter cannot work well if the density of measurements varies from target to target, which is based on the measurement set partitioning algorithms employing the Mahalanobis distance between measurements. To tackle the problem, two measurement set partitioning approaches, the shared nearest neighbors similarity partitioning (SNNSP) and SNN density partitioning (SNNDP), are proposed in this paper. In SNNSP, the shared nearest neighbors (SNN) similarity, which incorporates the neighboring measurement information, is introduced to DP instead of the Mahalanobis distance between measurements. Furthermore, the SNNDP is developed by combining the DBSCAN algorithm with the SNN similarity together to enhance the reliability of partitions. Simulation results show that the ET-PHD filters based on the two proposed partitioning algorithms can achieve better tracking performance with less computation than the compared algorithms.

APA, Harvard, Vancouver, ISO, and other styles

47

Uebo, Tetsuji. "Measurement of Distance down to Zero Meters by Standing Wave Radar." IEEJ Transactions on Electronics, Information and Systems 125, no. 11 (2005): 1646–51. http://dx.doi.org/10.1541/ieejeiss.125.1646.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Kayes, M. Imrul, and Martin Rochette. "Precise Distance Measurement by a Single Electro-Optic Frequency Comb." IEEE Photonics Technology Letters 31, no. 10 (May 15, 2019): 775–78. http://dx.doi.org/10.1109/lpt.2019.2907576.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Liang Jing, 梁晶, 龙兴武 Long Xingwu, 张斌 Zhang Bin, and 金世龙 Jin Shilong. "Absolute Distance Measurement by Using 117 μm Synthetic Wavelength." Acta Optica Sinica 30, no. 10 (2010): 2947–51. http://dx.doi.org/10.3788/aos20103010.2947.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Wang, Tao, Bicong Wang, Yufeng Luo, Hengyu Li, Jinjun Rao, Zhizheng Wu, and Mei Liu. "Accurate Measurements of the Rotational Velocities of Brushless Direct-Current Motors by Using an Ultrasensitive Magnetoimpedance Sensing System." Micromachines 10, no. 12 (December 6, 2019): 859. http://dx.doi.org/10.3390/mi10120859.

Full text

Abstract:

Reports on measurements of the rotational velocity by using giant magnetoimpedance (GMI) sensors are rarely seen. In this study, a rotational-velocity sensing system based on GMI effect was established to measure rotational velocities of brushless direct-current motors. Square waves and sawtooth waves were observed due to the rotation of the shaft. We also found that the square waves gradually became sawtooth waves with increasing the measurement distance and rotational velocity. The GMI-based rotational-velocity measurement results (1000–4300 r/min) were further confirmed using the Hall sensor. This GMI sensor is capable of measuring ultrahigh rotational velocity of 84,000 r/min with a large voltage response of 5 V, even when setting a large measurement distance of 9 cm. Accordingly, the GMI sensor is very useful for sensitive measurements of high rotational velocity.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Electronic distance measurement'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles