Space-borne low-power optical beacon system and its implementation method

Abstract

The invention discloses a satellite-borne low power consumption light beacon system based on a micro / nano satellite and an implementation method thereof. The solution provides an optimization method for the beam opening angle and power of a semiconductor laser; combined coverage on a ground target observation area is realized and redundant backup is effectively performed by using three methods including the optimization method, a lamp bank distributed array design for improving output light power and different installation angles by using lamp banks composed of single beacon lamps (beam optimized semiconductor laser) and a coverage design of a beam overlapping area; and directional time division switching logic is adopted between the lamp banks, on-off logic control is performed by using longitudes and latitudes of sub-satellite points in real time, overlapping design is adopted for the on-off time between the front and back lamp groups, and these measures greatly reduce the power consumption of the system while ensuring continuous coverage on the target area. The invention mainly solves the problem of satellite-borne high-brightness active lighting beacons, and provides a solution for effectively reducing the power consumption and having high reliability; and particularly, the system expands the in-orbit application field of micro / nano satellites, and thus has important scientific significance and promotion value.

Description

technical field [0001] The invention relates to the technical field of satellite-borne laser beacons, in particular to a micro-nano-satellite-based space-borne low-power optical beacon system and an implementation method thereof. Background technique [0002] The spaceborne optical beacon system is a satellite payload technology with important application significance. It can be widely used in satellite-ground / star optical communication, satellite tracking and capture by measuring stations, and active lighting of in-orbit satellites. In recent years, it has become a satellite payload technology in many countries. technology research hotspots. At present, the research of spaceborne optical beacon system mainly faces several important problems: (1) Beacon light is affected by long-distance transmission, which will cause a great loss of light energy and increase the difficulty of receiving; (2) Ground capture and tracking To ensure the alignment of the beam, it is very difficu...

AI Technical Summary

Problems solved by technology

At present, the research of spaceborne optical beacon system mainly faces several important problems: (1) Beacon light is affected by long-distance transmission, which will cause a great loss of light energy and increase the difficulty of receiving; (2) Ground capture and tracking To ensure the alignment of the beam, it is very difficult to quickly establish a stable and reliable optical link within a short transit time; (3) Due to the influence of the satellite's own attitude, orbit and pointing error, there is always an uncertain angle in the beam aiming

This method is not only susceptible to satellite disturbance sources, but also increases system power consumption, and at the same time reduces the speed of optical link establishment

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