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Method for improving mutual guiding precision of multiple photoelectric theodolites working together

A technology of photoelectric theodolite and cooperative work, which is applied in theodolite and other directions, and can solve the problems of insufficient accuracy of mutual guidance

Active Publication Date: 2019-05-31
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: aiming at the demand for high-precision guidance, solve the problem of insufficient mutual guidance precision of multiple photoelectric theodolites that work together at present

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  • Method for improving mutual guiding precision of multiple photoelectric theodolites working together

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Embodiment Construction

[0020] Examples of the present invention are described below. But following embodiment only limits to explain the present invention, and protection scope of the present invention should comprise the whole content of claim, and promptly can realize the whole content of claim of the present invention to those skilled in the art through following embodiment.

[0021] Theodolite A and B need to track a target at the same time, and the geodetic coordinate system coordinates of the site of theodolite A are (100, 30, 500) (longitude L 1 , latitude B 1 , Altitude H 1 ), theodolite B is about 100 meters east of A, and its station coordinates are (100.001, 30, 500). The theodolite that needs to find and track the target first sends a signal to the other theodolite to guide it to track.

[0022] Step (1), star shooting calibration: before entering the working state, shoot the Polaris for calibration, and take the true north direction as the direction of azimuth 0°. Assuming that theo...

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Abstract

The invention discloses a method for improving the mutual guiding precision of multiple photoelectric theodolites working together. For the requirement of high-precision guiding, the problem of the insufficient mutual guiding precision of the multiple photoelectric theodolites currently working together is solved. When the multiple photoelectric theodolites track the same target at the same time,one theodolite firstly captures the target and stabilizes the tracking target, then the theodolite emits a signal to guide other photoelectric theodolites to enter a tracking state, the factors affecting the guiding accuracy mainly include a site error, a pointing error and a dynamic hysteresis error. In order to suppress the errors, target trajectory data is transformed to coordinates of a station center tangent plane of a guided theodolite through synchronous star capture and calibration, the guided theodolite firstly moves along a predicted target trajectory, and then the mutual guidance accuracy is improved by the fine adjustment of a frame position, deviation amount feedforward control and other methods after receiving a deviation amount.

Description

technical field [0001] The invention belongs to the field of photoelectric system tracking control, and relates to a method for improving mutual guiding precision among a plurality of photoelectric theodolites working together. Specifically, when multiple photoelectric theodolites are tracking the same target at the same time, one theodolite first captures the target and stably tracks the target, and then sends a signal to guide other photoelectric theodolites to enter the tracking state, improving its guidance accuracy. method. Background technique [0002] As a high-precision observation equipment, the photoelectric theodolite has the advantages of high precision, good real-time performance, dynamic tracking, and intuitive reproduction in the form of images, so it is widely used in aircraft experiments in the fields of aviation and aerospace. In some experiments, one theodolite cannot cover all the observation areas, so multiple theodolites need to work together, that is,...

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Application Information

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IPC IPC(8): G01C1/02
Inventor 毛耀李志俊刘琼任戈谭毅王继红于伟
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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