An all-optical capture method and device applied to space laser communication

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

Active Publication Date: 2022-03-25
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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  • An all-optical capture method and device applied to space laser communication
  • An all-optical capture method and device applied to space laser communication
  • An all-optical capture 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 and 30° in the pitch direction, the beam spread angle of the beacon light emitting lens 4 is 1°, and the beacon light receiving lens 10 receives the field of view 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 at a 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 region;

[...

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Abstract

An all-optical capture method and device applied to space laser communication, which belongs to the field of laser communication. In order to solve the problem that the existing technology cannot meet the requirements of optical axis capture and alignment of laser communication systems, it consists of A terminal and B terminal, two The terminal structure is the same; the A terminal and the B terminal are composed of a beacon light laser, a beacon light emitting lens, a prism baffle, a prism light bar, a rectangular prism, a two-dimensional turntable, a beacon light receiving camera and a beacon light receiving lens The present invention uses a circular beacon light to perform two-dimensional scanning in space, and combines a right-angle prism with a light bar and a baffle to realize two-dimensional large-scale double-terminal all-optical capture in space. When capturing, the combination of rectangular helical skip scanning and pitch linear scanning is used to achieve the final double-ended capture. The beacon light does not require heterosexual shaping, which is convenient for integrated optimization with the laser communication beacon light system, reduces system volume, power consumption and complexity, and achieves better capture results.

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 communication parties 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 exchange ...

Claims

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Application Information

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Patent Type & Authority Patents(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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