Satellite laser communication compound axis light tracking device and control method thereof

A technology of laser communication and composite axis, which is applied in the field of satellite laser communication links, can solve problems such as poor dynamic disturbance suppression ability, lack of smooth field of view switching, and unstable satellite platform, and achieve high dynamic range, stable tracking, and rotational torque The effect of small, broad application prospects

Inactive Publication Date: 2010-01-20
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

The use of a periscope-type coarse tracking and aiming system results in an excessive moment of inertia, resulting in instability of the satellite platform
Its composite axis control system adopts the traditional fine tracking and aiming structure to compensate the rough tracking and aiming residual, lacks smooth field of view switching, and has poor dynamic disturbance suppression ability on small platforms in complex space environments

Method used

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  • Satellite laser communication compound axis light tracking device and control method thereof
  • Satellite laser communication compound axis light tracking device and control method thereof
  • Satellite laser communication compound axis light tracking device and control method thereof

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.

[0038] see first figure 2 , figure 2 It is a schematic diagram of the satellite laser communication compound axis tracking and aiming device of the present invention. It can be seen from the figure that the satellite laser communication composite axis tracking and aiming device of the present invention includes transmitting beacon light L1, receiving beacon light L2, communication laser L3; coarse tracking and aiming system 21, telescope system 22, fine tracking and aiming system 23, advanced aiming System 25; capture tracking sensor 24, communication tracking sensor 26, signal receiver 27; first mirror M1, second mirror M2, third mirror M3, half mirror M4; emit beacon light After L1 is incident on the first mirror M1, it enters the fine tracking and aiming syste...

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Abstract

A satellite laser communication compound axis light tracking device and a control method thereof are disclosed, which are mainly used for satellite laser communication terminal collimation and capture and high precision large scale tracking of a tracking system. The device adopts a compound axis system by combining a coarse tracking system and a fine tracking system, and a control method of the coarse tracking system unloading the fine tracking system. The coarse tracking system adopts a unique rotary biprism structure and has the characteristic of scanning with higher precision in a larger angel range. A capture tracking sensor adopts single CMOS sensor to carry out ternary form window with changeable view field and changeable sampling rate, and a communication tracking detector adopts a 4-quadrant detector. The invention adopts the low bandwidth rotary biprism coarse tracking system and the high bandwidth fine tracking system to carry out dynamic and self-adaptive bandwidth match to realize high dynamic range stable tracking of the compound axis system, thus having extensive application prospect in a satellite laser communication high precision laser link system.

Description

technical field [0001] The invention relates to the technical field of satellite laser communication links, and relates to a satellite laser communication compound axis light tracking and aiming device and a control method thereof, which are used for aiming, capturing and tracking between two satellites, and have a large scanning range and high tracking accuracy And high servo bandwidth optical tracking ability. Background technique [0002] Compared with the existing radio frequency communication, satellite laser communication has many advantages such as high transmission rate, large communication capacity, low power consumption, small size, light weight, anti-interference and high confidentiality. The best solution for communication has gained wide attention in the military and civilian fields. The optical tracking and pointing system plays an extremely important role in satellite laser communication terminals. The optical tracking and pointing system determines the basic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/00G02B26/08H04B10/11
Inventor 闫爱民周煜孙建锋刘立人
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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