Laser inter-satellite link double-end receiving and transmitting optical axis autonomous calibration method

Abstract

The invention discloses a laser inter-satellite link double-end receiving and transmitting optical axis autonomous calibration method, and belongs to the technical field of satellite laser communication. In this way, mutual transmission of energy of the double-end receiving detector is carried out by means of laser communication data frames of a laser inter-satellite link, and the advance aiming mechanism is automatically adjusted through mutual cooperation of the two satellite laser terminals, so that automatic calibration of signal receiving and transmitting optical axes of the two satellite laser terminals is achieved. Compared with traditional optical axis calibration by means of a laser ground station and optical axis calibration by means of instruction sending of in-orbit double satellites in a measurement and control arc section at the same time, efficiency is greatly improved, and all-weather, all-time and all-airspace receiving and transmitting optical axis calibration can be achieved. Compared with other methods for calibrating the transmitting and receiving coaxiality of a single satellite laser terminal by means of a calibration reflector (calibration) installed on a satellite, the method can calibrate the consistency of signal transmitting and receiving optical axes of all rotation angles in the working stage of the laser terminal, and the calibration process does not affect normal work of links between laser satellites; and "ready-to-use calibration" is achieved.

Description

technical field [0001] The invention relates to a method for autonomously calibrating a double-end receiving and receiving optical axis of a laser intersatellite link, and belongs to the technical field of satellite laser communication. Background technique [0002] The Chinese patent with the publication number CN201811554230.7 discloses an on-orbit calibration of a satellite optical communication terminal and a device and method for transmitting and receiving coaxiality correction. The invention mainly discloses a method for the laser communication terminal to self-calibrate the transmitting optical axis and the receiving coaxial axis through the calibration reflector (pyramid) installed on the satellite in orbit. This invention mainly refers to the calibration of the coaxiality of the laser terminal at the single end of the laser link by sending instructions and interpreting telemetry in the satellite measurement and control arc, and does not involve the cooperation betwe...

AI Technical Summary

Problems solved by technology

This invention mainly refers to the calibration of the coaxiality of the laser terminal at the single end of the laser link by sending instructions and interpreting telemetry in the satellite measurement and control arc, and does not involve the cooperation between the two laser terminals of the laser intersatellite link. Carry out the respective transmit and receive optical axis calibration

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