All-optical capturing method and device applied to space laser communication

A technology of laser communication and optical capture, applied in the field of laser communication, can solve the problems such as the inability to meet the requirements of optical axis capture and alignment of laser communication systems, and achieve the effects of reducing the time required for capture, improving the capture probability, and increasing the capture range

Active Publication Date: 2021-10-19
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The present invention proposes an all-optical capture method and device applied to space laser communication in order to solve the problem that the prior art cannot meet the requirements of laser communication system optical axis capture and alignment

Method used

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  • All-optical capturing method and device applied to space laser communication
  • All-optical capturing method and device applied to space laser communication
  • All-optical capturing method and device applied to space laser communication

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Embodiment

[0035] An all-optical capture device applied to space laser communication, the capture area is 30° in the azimuth direction, 30° in the pitch direction, the beam divergence angle of the beacon light emitting lens 4 is 1°, and the receiving field of view of the beacon light receiving lens 10 The angle of the prism diaphragm 6 is 1° in the azimuth direction and 31° in the elevation direction, and the field of view of the right-angle prism 7 can cover the capture area in the elevation direction, that is, as long as the beacon light is irradiated to the right angle within 1° in the azimuth direction The prism 7 can all reflect the beacon light back according to the parallel incident direction.

[0036] An all-optical trapping method applied to space laser communication, comprising the following steps:

[0037] Step 1: Both terminal A 1 and terminal B 2 open the prism baffle 5, and the boresight of the two-dimensional turntable 8 points to the center of the captured uncertain regio...

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Abstract

The invention discloses an all-optical capturing method and device applied to space laser communication, belongs to the field of laser communication, and aims to solve the problem that in the prior art, requirements for optical axis capturing alignment of a laser communication system cannot be met. The device is composed of a terminal A and a terminal B, which have the same structure. Each of the terminal A and the terminal B is composed of a beacon light laser, a beacon light emitting lens, a prism baffle, a prism diaphragm, a rectangular prism, a two-dimensional turntable, a beacon light receiving camera and a beacon light receiving lens. According to the invention, a circular beacon light is adopted to carry out two-dimensional scanning in a space, and space two-dimensional large-range double-end all-optical capture is realized in combination with the rectangular prism with a diaphragm and a baffle; during capturing, final double-end capture is realized in a manner of combining rectangular spiral leapfrogging scanning and pitching linear scanning; and the beacon light does not need to be subjected to heterosexual shaping, integrated optimization with a laser communication beacon light system is facilitated, the size, power consumption and complexity of the system are reduced, and a better capture effect is achieved.

Description

technical field [0001] The invention relates to an all-optical capture method and device applied to space laser communication, belonging to the field of laser communication. Background technique [0002] Space laser communication has the characteristics of high communication rate and strong anti-interference ability. However, due to the small divergence angle of the communication laser beam, the optical axis must be aligned by scanning and capturing when the link is established. The traditional method is to measure the current terminal position and attitude information through GPS / INS and other equipment, and then the two parties in communication exchange data through microwave and other communication links, calculate the angular position of the other party, point and scan, capture and track each other’s beacon light, and then pass Beacon light is tracked to achieve optical axis alignment. Due to the need to use other electromagnetic means for measurement and information ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/11H04B10/40
CPCH04B10/11H04B10/40
Inventor 李小明王隆铭朱国帅宋延嵩江伦郭艺博张家齐张友建肖鹏
Owner CHANGCHUN UNIV OF SCI & TECH
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