Optical wave atmospheric refraction error calculation method based on single-station photoelectric theodolite

Abstract

The invention provides an optical wave atmospheric refraction error calculation method based on a single-station photoelectric theodolite. The method is characterized in that a radar is still requiredto measure a distance of a flight target. The method specifically comprises the steps of S1) establishing a topocentric coordinate system, and converting the position of the photoelectric theodoliteand the position of the radar into the topocentric coordinate system; ...... S4) dividing the layer number of n(r) into L sections from the position of the photoelectric theodolite, and calculating anapparent distance between the photoelectric theodolite and the flight target; S5) dividing rM into L sections according to the layer number of n(r) from the position of the photoelectric theodolite,and calculating a geocentric angle phi between the photoelectric theodolite and the flight target; and S6) calculating a real elevation angle E' of the flight target relative to the photoelectric theodolite according to the following formula (V). The optical wave atmospheric refraction error calculation method can be used for performing higher-precision optical waveguide atmospheric refraction error calculation by optimizing apparent distance and geocentric angle definite integral calculation methods at the same time under the condition of observation data of the single-station photoelectric theodolite.

Description

technical field [0001] The invention belongs to the technical field of photoelectric measurement, and in particular relates to a method for calculating light wave atmospheric refraction error based on a single-station photoelectric theodolite. Background technique [0002] The photoelectric theodolite is a large-scale optical measuring device with a servo system, which has the function of automatically tracking the moving target in the air. The optical measurement system mainly composed of photoelectric theodolite is suitable for target observation and track measurement of moving targets with long track segments in the air. When the 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 t...

AI Technical Summary

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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