Photoelectric theodolite directional calibration method based on common star

A photoelectric theodolite and star technology, which is applied to instruments, measuring devices, etc., can solve problems such as poor quality, time-consuming and laborious calibration of azimuth calibration, and calibration efficiency.

Pending Publication Date: 2020-10-23
中国人民解放军63660部队
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0009] The purpose of the present invention is to solve the technical problems that the azimuth calibration in the photoelectric theodolite calibration process takes time and effort and the calibration efficiency is not good

Method used

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  • Photoelectric theodolite directional calibration method based on common star
  • Photoelectric theodolite directional calibration method based on common star
  • Photoelectric theodolite directional calibration method based on common star

Examples

Experimental program
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Embodiment 1

[0058] A certain type of photoelectric theodolite, with a caliber of 650mm, a focal length of 4m, and a field of view of about 0.2°×0.2°, implements the method announced by the present invention as follows:

[0059] (1) Photoelectric theodolite leveling and positioning

[0060] Move the photoelectric theodolite and the vehicle to the flat and hard ground and level it, use the differential GNSS system to measure the site position, and establish the center coordinate system with the site coordinates as the origin.

[0061] (2) Arbitrary zero reference determination

[0062] According to the current time and the position of the sun relative to the equipment, estimate the north position, and reset the photoelectric theodolite encoder to zero in this direction to determine the zero reference.

[0063] (3) Sun position measurement

[0064] Turn the photoelectric theodolite, and manually adjust the lower edge of the sun to enter the field of view of the device according to changes ...

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Abstract

The invention belongs to the technical field of photoelectric measurement and discloses a photoelectric theodolite orientation calibration method based on a common star. Any first zero-direction reference is determined after leveling and positioning of a photoelectric theodolite, then common star position measurement is carried out to calculate a preliminary reference value, on this basis, zero-direction reference value calculation is carried out through higher star position measurement to obtain a second zero-direction reference value, and equipment orientation calibration is completed. The method is advantaged in that the zero-direction reference of the photoelectric theodolite is rapidly obtained based on the position of the common star, a problem of orientation calibration in the calibration process of the photoelectric theodolite is solved, the equipment calibration time is shortened, and calibration efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of photoelectric measurement, and in particular relates to a method for directional calibration of a photoelectric theodolite. Background technique [0002] Photoelectric theodolite is an important component of shooting range measurement and control equipment. It can measure the trajectory parameters of airborne targets and has the advantages of simple operation, reliable operation and high measurement accuracy. Measurement accuracy is the main technical index of the photoelectric theodolite, mainly including the degree of deviation between the azimuth and elevation angle measured by the photoelectric theodolite and the true value of the target. In order to obtain high-precision measurement data, accurate calibration is required before the equipment works. Equipment azimuth calibration is an important part of calibration, and its error size determines the azimuth measurement accuracy of the equipment. [0...

Claims

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 周鑫张智香张丁梧邓鹏刘德超曹锐季锐董雪丰
Owner 中国人民解放军63660部队
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