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On-orbit self-calibration device of space laser communication terminal and calibration method of on-orbit self-calibration device

A laser communication and self-calibration technology, which is applied in transmitter monitoring and other directions, can solve the problems of long calibration time and difficult satellite-ground calibration, and achieve the effect of reducing labor

Active Publication Date: 2021-03-26
XIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide an on-orbit self-calibration device for a space laser communication terminal, which solves the problems in the prior art that the satellite-ground calibration is difficult and the calibration time is too long

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  • On-orbit self-calibration device of space laser communication terminal and calibration method of on-orbit self-calibration device
  • On-orbit self-calibration device of space laser communication terminal and calibration method of on-orbit self-calibration device
  • On-orbit self-calibration device of space laser communication terminal and calibration method of on-orbit self-calibration device

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] An on-orbit self-calibration device for a space laser communication terminal, such as figure 1 As shown, it includes a beacon light transmitting end 1, a first optical splitter 2, a relay branch 3, a color separation film 4, an optical antenna 5, a first reflector 6, a beacon light receiving end 7, and a signal laser emitting end 8 , the second beam splitter 9, the second reflector 10 and the signal laser receiving end 11; as figure 2As shown, the optical antenna 5 is movably connected with a total optical reflection prism 12 for reflecting the emitted optical signal, the total optical reflection prism 12 is fixed outside the aperture of the optical antenna 5, and the vacant state is located outside the optical antenna, and does not block the optical antenna for receiving and dispatching. Light, located directly opposite to the apert...

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Abstract

The invention discloses an on-orbit self-calibration device of a space laser communication terminal and a calibration method of the on-orbit self-calibration device. The on-orbit self-calibration device comprises a beacon light emitting end, a first light splitting piece, a relay branch, a color separation piece, an optical antenna, a first reflecting mirror, a beacon light receiving end, a signallaser emitting end, a second light splitting piece, a second reflecting mirror and a signal laser receiving end. An all-optical reflecting prism is connected to an optical antenna, a transmitting optical path is returned to a receiving system of the all-optical reflecting prism along the original path, and relative deviation positions and deviation values of beacon light and signal laser transmitting and receiving optical axes of a laser communication terminal are subjected to rapid self-calibration. Optical axis deviation calibration is realized without cooperation of a ground optical communication system and other on-orbit satellite laser communication terminals, and rapid mutual positioning and tracking of the laser communication terminals are ensured through a deviation value algorithm compensation mode; and the labor, time, difficulty and cost of the debugging stage of the laser communication terminal during on-orbit operation of the satellite are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of space laser communication equipment, relates to an on-orbit self-calibration device of a space laser communication terminal, and also relates to a calibration method of the calibration device. Background technique [0002] At present, the market prospect of satellite communication in the direction of military and civilian use is very broad. Satellite space laser communication mainly realizes the communication between satellites, between satellites and various types of aircraft, and between satellites and the ground by installing laser communication terminals on satellite platforms, various types of aircraft or the ground. Realize high-speed communication. The advantages are very obvious, such as large bandwidth, good real-time performance, free frequency use, security and confidentiality, low power consumption, and small size. It solves the defects of conventional microwave communication such as small ban...

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Application Information

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IPC IPC(8): H04B17/11
CPCH04B17/11
Inventor 胡辉赵钰帆王玥施卫侯磊
Owner XIAN UNIV OF TECH
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