Satellite laser communication composite tracking and pointing vibration suppression device and control method

Abstract

The invention discloses a time-sharing compensation-based satellite laser communication composite tracking and pointing vibration suppression device and a control method. The device comprises a satellite platform and a satellite laser tracking and pointing system, wherein the satellite laser tracking and pointing system comprises a rough tracking and pointing system, a telescope system, a fine tracking and pointing system, a first transflective lens, a second transflective lens, a transflective lens, an acquisition and tracking sensor, a communication tracking sensor and a signal receiver. The system is characterized in that: a signal judgment device is also arranged between the satellite platform and the satellite laser tracking and pointing system; the signal decision device judges a dither signal of the satellite platform and triggers the fine tracking and pointing system to perform complementary tracking and pointing through a corresponding trigger switch according to the judgment result, or triggers a composite system formed by the rough tracking and pointing system and the fine tracking and pointing system to perform the complementary tracking and pointing. The device realizes the time-sharing tracking and pointing compensation of the rough tracking and pointing system and the fine tracking and pointing system, improves tracking and pointing efficiency, and greatly reduces the carrying power of a satellite.

Description

Technical field [0001] The invention relates to the technical field of satellite laser communication links. It is a satellite laser communication composite tracking and pointing vibration suppression device and control method based on time-sharing compensation. It is used for aiming, capturing and tracking between two satellites and has a large scanning range, High tracking accuracy and high servo bandwidth optical tracking and aiming capabilities. The coarse tracking and aiming system performs time-sharing compensation for the fine tracking and aiming system, which can greatly reduce the power consumption of satellite transportation and improve the tracking and aiming efficiency of satellite optical communication. Background technique [0002] Compared with the existing radio frequency communication, satellite laser communication has many advantages such as high transmission rate, large communication capacity, low power consumption, small size, light weight, anti-interference and...

AI Technical Summary

Problems solved by technology

When predicting and filtering the position deviation signal of fine tracking, due to the discreteness of the deviation signal, the obtained prediction signal will not be very accurate, which will bring errors to the unloading of the rough tracking and aiming system

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