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Ultra-far deep space laser communication capturing and tracking system

A technology of laser communication and tracking system, applied in image communication, parts of TV system, free space transmission, etc., can solve the problem of laser communication system capture and tracking technology, low measurement accuracy of position and attitude information, capture and tracking sensitivity Low problems, to achieve the effect of improving the capture and tracking sensitivity, strong resistance to space radiation, and high sensitivity

Active Publication Date: 2022-03-04
BEIJING RES INST OF TELEMETRY +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the detector field angle of the capture detection module is small, and the capture and tracking sensitivity is low, so it is impossible to complete the capture and tracking of the beam in the deep space more than 30 astronomical units from the earth.
[0009] Although the above five technologies have realized the capture and tracking of the laser communication system, they have not solved the capture and tracking technology of the laser communication system at a distance of more than 30 astronomical units from the earth, and there are still low measurement accuracy of position and attitude information, capture and tracking. Low sensitivity, complex system composition, poor stability and other problems

Method used

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  • Ultra-far deep space laser communication capturing and tracking system

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Effect test

Embodiment 1

[0042] Such as figure 1 As shown, an ultra-far and deep space laser communication capture and tracking system includes an optical antenna 1, a rough tracking turntable 2 connected to the optical antenna 1, an electro-optic deflector 3 and a spectroscopic mirror group 4 sequentially arranged on the output optical path of the optical antenna 1 , the visible light focal plane detector 5 arranged on the visible light output optical path of the spectroscopic mirror group 4, the infrared focal plane detector 6 arranged on the infrared light output optical path of the spectroscopic mirror group 4, and the visible light focal plane detector 5 and the infrared focal plane detector The on-board computer 7 electrically connected to the device 6, the navigation gyroscope 8 and the star sensor 9 electrically connected to the on-board computer 7;

[0043] The optical antenna 1 is used to receive the light beam after pointing to the target direction, the rough tracking turntable 2 is used to...

Embodiment 2

[0055] Such as figure 1 As shown, an ultra-far and deep space laser communication capture and tracking system includes an optical antenna 1, a rough tracking turntable 2, an electro-optical deflector 3, a beam splitter group 4, a visible light focal plane detector 5, an infrared focal plane detector 6, a star Carry computer 7, navigation gyroscope 8 and star sensor 9.

[0056] The navigation gyroscope 8 sends attitude information and position information to the onboard computer 7 according to the principle of inertial navigation; the star sensor 9 sends the attitude and position error compensation to the onboard computer 7 by photographing the stars and looking up the ephemeris; After calculating the attitude information and position information and the attitude and position error compensation, the rough tracking pointing signal is sent to the rough tracking turntable 2, and the rough tracking turntable 2 drives the optical antenna 1 installed on the rough tracking turntable 2...

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Abstract

The invention provides an ultra-far deep space laser communication capturing and tracking system which obtains position information and attitude information through a star sensor and a navigation gyroscope, and obtains solar facula and earth facula positions through a visible light focal plane detector and an infrared focal plane detector. And the spaceborne computer calculates a coarse tracking pointing signal to control the coarse tracking turntable to drive the optical antenna, and calculates a fine tracking error signal to control the deflection direction of a transmission light beam of the electro-optical deflector, so that light beam capture tracking in laser communication from an ultra-far deep space away from the earth by 30-250 astronomical units to the earth is realized. An existing beacon light emitting system is omitted, the weight, the size and the power consumption of a laser communication system are effectively reduced, the star sensor and the navigation gyroscope are combined to obtain attitude and position information, a focal plane detector is used for replacing a common QAPD detector to obtain tracking errors, the capturing and tracking sensitivity and precision are effectively improved, and the tracking precision is improved. The method can be widely applied to ultra-far deep space detectors such as asteroid detectors and solar system marginal detectors.

Description

technical field [0001] The invention relates to the technical field of measurement and testing, in particular to an ultra-far and deep-space laser communication capture and tracking system. Background technique [0002] With the development of our country's lunar exploration and Mars exploration, in the future, deep space exploration will continue to carry out in-depth research in the direction of ultra-far deep space exploration such as asteroid detection and solar system edge detection. At present, the radio frequency band is difficult to provide high-speed communication support services for ultra-deep space detector missions, so it is imminent to apply space laser communication technology to ultra-deep space information transmission tasks. [0003] The fast and stable capture and tracking of laser communication beams is the key link and important guarantee for the realization of ultra-far and deep space laser communication. Due to the extremely narrow beam divergence ang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/11H04N5/341H04N5/374G01C21/16G01C21/20G05D1/12
CPCH04B10/11G01C21/20G01C21/165G05D1/12H04N25/40H04N25/76Y02D30/70
Inventor 赵卓刘向南陈虹达吴合龙王建军李晓亮谌明
Owner BEIJING RES INST OF TELEMETRY
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