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Page 1
Global calibration of unleveled theodolite using angular distance constraints.
Zheng X, Wei Z, Zhang G. Zheng X, et al. Appl Opt. 2016 Nov 20;55(33):9495-9503. doi: 10.1364/AO.55.009495. Appl Opt. 2016. PMID: 27869853
The theodolite is an important optical measurement instrument in application. Its global calibration, including position and orientation, is a prerequisite for measurement. Most global calibration methods require the theodolite to be leveled precisely, …
The theodolite is an important optical measurement instrument in application. Its global calibration, including position and o …
Measuring speed of vessels operating around endangered southern resident killer whales (Orcinus orca) in Salish Sea critical habitat.
Lo CF, Nielsen KA, Ashe E, Bain DE, Mendez-Bye A, Reiss SA, Bogaard LT, Collins MS, Williams R. Lo CF, et al. Mar Pollut Bull. 2022 Jan;174:113301. doi: 10.1016/j.marpolbul.2021.113301. Epub 2022 Jan 7. Mar Pollut Bull. 2022. PMID: 35090284 Free article.
A method for estimating their speed is required to predict received noise levels and compliance with vessel regulations. We compared theodolite and photogrammetry methods to estimate the number, distance, and speed of vessels in SRKW Salish Sea summertime critical h …
A method for estimating their speed is required to predict received noise levels and compliance with vessel regulations. We compared theo …
Calibration method of a laser beam based on discrete point interpolation for 3D precision measurement.
Kang J, Wu B, Sun Z, Wang J. Kang J, et al. Opt Express. 2020 Sep 14;28(19):27588-27599. doi: 10.1364/OE.403160. Opt Express. 2020. PMID: 32988049 Free article.
A laser beam used as a visualizing measuring axis is an important technique in 3D shape measurement. A highly accurate calibration method of a laser beam based on discrete point interpolation is proposed in this paper. ...The discrete point interpolation model is es …
A laser beam used as a visualizing measuring axis is an important technique in 3D shape measurement. A highly accurate calibra …
Two-step calibration method of the extrinsic parameters with high accuracy for a bistatic non-orthogonal shafting laser theodolite system.
Sun Z, Kang J, Zhang Z, Feng L, Wu AB. Sun Z, et al. Opt Express. 2023 Jan 16;31(2):2120-2134. doi: 10.1364/OE.481204. Opt Express. 2023. PMID: 36785233 Free article.
Motivated by the increasing demands on the precision of 3D large-scale measurement, the extrinsic parameters calibration with high accuracy of the bistatic non-orthogonal shafting laser theodolite (N-theodolite) system is required. ...The proposed method is v …
Motivated by the increasing demands on the precision of 3D large-scale measurement, the extrinsic parameters calibration with high ac …
The Ornithodolite as a tool to quantify animal space use and habitat selection: a case study with birds diving in tidal waters.
Cole EL, Waggitt JJ, Hedenstrom A, Piano M, Holton MD, Börger L, Shepard ELC. Cole EL, et al. Integr Zool. 2019 Jan;14(1):4-16. doi: 10.1111/1749-4877.12327. Integr Zool. 2019. PMID: 29851279 Free article.
Here, we assess a method of quantifying animal space use based on a modified theodolite with an inbuilt laser rangefinder. Using a database of >4200 tracks of migrating birds, we show that detection distance increases with bird body mass (range 5 g to >10 kg). …
Here, we assess a method of quantifying animal space use based on a modified theodolite with an inbuilt laser rangefinder. Using a da …
Western gray whale behavioral response to seismic surveys during their foraging season.
Gailey G, Sychenko O, Zykov M, Rutenko A, Blanchard A, Melton RH. Gailey G, et al. Environ Monit Assess. 2022 Oct 18;194(Suppl 1):740. doi: 10.1007/s10661-022-10023-w. Environ Monit Assess. 2022. PMID: 36255529 Free PMC article.
Five shore-based teams monitored gray whale behavior from 1 June to 30 September using theodolite tracking and focal follow methodologies. Behavioral data were combined with acoustic and benthic information from studies conducted during the same period. ...Although the mit …
Five shore-based teams monitored gray whale behavior from 1 June to 30 September using theodolite tracking and focal follow methodolo …
Theoretical and experimental analysis of basic parameters of two-element optical systems.
Mikš A, Novák P. Mikš A, et al. Appl Opt. 2012 Oct 20;51(30):7286-94. doi: 10.1364/AO.51.007286. Appl Opt. 2012. PMID: 23089783
This type of optical system is widespread in practice mainly in the field of photographic lenses and in surveying instruments (theodolites, leveling instruments, etc.) where the anallactic telescope with internal focusing is being used. ...Furthermore, the detailed analysi …
This type of optical system is widespread in practice mainly in the field of photographic lenses and in surveying instruments (theodolite …
Advanced 3D Photogrammetric Surface Reconstruction of Extensive Objects by UAV Camera Image Acquisition.
Calì M, Ambu R. Calì M, et al. Sensors (Basel). 2018 Aug 26;18(9):2815. doi: 10.3390/s18092815. Sensors (Basel). 2018. PMID: 30149688 Free PMC article.
The relationships between the acquisition grid shapes, the acquisition grid geometric parameters (pitches, image rates, camera framing, flight heights), and the 3D photogrammetric surface reconstruction accuracy were studied. Ground Sampling Distance (GSD), the necessary n …
The relationships between the acquisition grid shapes, the acquisition grid geometric parameters (pitches, image rates, camera framing, flig …
[Study on determination of plume velocity by passive differential optical absorption spectroscopy].
Li A, Xie PH, Liu WQ, Liu JG, Dou K, Lin YH. Li A, et al. Guang Pu Xue Yu Guang Pu Fen Xi. 2008 Oct;28(10):2214-7. Guang Pu Xue Yu Guang Pu Fen Xi. 2008. PMID: 19123375 Chinese.
Two passive DOAS systems were placed under the plume along the plume transmission direction to observed the scattered sunlight at one fixed sepasation angle, and then the plume velocity was derived from the time delay resulting from the plume moving a certain distance, and …
Two passive DOAS systems were placed under the plume along the plume transmission direction to observed the scattered sunlight at one fixed …