A Calculation Method of Lightwave Atmospheric Refraction Error Based on Single Station Photoelectric Theodolite
A photoelectric theodolite and error calculation technology, applied in the direction of instruments, measuring devices, etc., can solve the problem of low accuracy of refraction error, achieve the effects of fast convergence speed, lift-off measurement accuracy, and improve calculation accuracy
Active Publication Date: 2022-06-24
中国人民解放军63660部队
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Problems solved by technology
This method requires two photoelectric theodolites to provide measurement data at the same time, and the photoelectric theodolite is a large and expensive device. When there is only a single device in the same period of the test and in the same area, this method is not applicable
At the same time, in GJB 2234A-2014 (4.10 Correction of light wave refraction error), the calculation formula of apparent distance and geocentric angle integral adopts simplified approximate formula (GJB 2234A-2014 Appendix C), and the accuracy of refraction error calculated by this method is not high
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[0048] The following structural description drawings further describe the specific technical solutions of the present invention.
[0049] as attached figure 1 As shown, in order to illustrate the implementation of the present invention more vividly, a single photoelectric photoelectric theodolite is used to track and measure the flying target, the radar provides distance measurement data to the target, and the flying target is equipped with a high-precision GPS device (the device positioning data As the track standard source), the rendezvous between the photoelectric theodolite and the radar is shown as figure 2 shown. A method for calculating the atmospheric refraction error of light waves based on a single-station photoelectric theodolite of the present invention specifically includes the following steps:
[0050] S1) Establish a station center coordinate system, and convert the position of the photoelectric theodolite and the radar position to the station center coordina...
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The present invention provides a kind of calculation method of light wave atmospheric refraction error based on single-station photoelectric theodolite, it is characterized in that, also need radar to measure the distance of flying target, specifically comprise the following steps: S1) establish station center coordinate system, photoelectric theodolite The position and the radar position are converted to the station center coordinate system; ... S4) from the position of the photoelectric theodolite, the number of layers of n (r) is divided into L sections, and the apparent distance between the photoelectric theodolite and the flying target is calculated S5) From the position of the photoelectric theodolite, r M Divide into the geocentric angle phi between the photoelectric theodolite and the flight target by the layered quantity of n (r); S6) calculate the real elevation angle E ' of the flight target relative to the photoelectric theodolite according to the following formula (V). The light wave atmospheric refraction error calculation method of the present invention can calculate the light wave atmospheric refraction error with higher precision by optimizing the apparent distance and the definite integral calculation method of the geocentric angle at the same time under the condition of single-station photoelectric theodolite observation data.
Description
technical field [0001] The invention belongs to the technical field of photoelectric measurement, and in particular relates to a method for calculating a light wave atmospheric refraction error based on a single-station photoelectric theodolite. Background technique [0002] Photoelectric theodolite is a large-scale optical measuring device with servo system, which has the function of automatic tracking of moving targets in the air. The optical measurement system mainly composed of photoelectric theodolites is suitable for target observation and trajectory measurement of moving targets with long trajectory segments in the air. When a light wave propagates through the atmosphere, due to the difference in the refractive index of the atmosphere, its propagation speed is no longer a uniform linear motion, and the path is also bent, which causes the refraction error of the light wave signal. The calculation results of the actual observation data show that when the distance from ...
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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 周鑫
Owner 中国人民解放军63660部队