Star sensor in-orbit maintenance system and method

Abstract

The invention discloses a star sensor in-orbit maintenance system and a method. An instruction module analyzes instruction categories; a software upward-annotation module analyzes a software upward-annotation command, which is sent by the instruction module, to obtain software upward-annotation data, and completes interaction which is with a CPU module and about the software upward-annotation data; a software programming module analyzes a software programming command, which is sent by the instruction module, to obtain software programming data, and completes interaction which is with the CPU module and about the software programming data; and a software downloading module analyzes a software downloading command, which is sent by the instruction module, to obtain software downloading data,and completes interaction which is with the CPU module and about the software downloading data. According to the system and the method, software upward-annotation, software programming and software downloading functions are modularized to be integrated into an FPGA (Field-Programmable Gate Array), an integration degree is high, power consumption is low, reliability is high, the instruction modulemodifies software parameters and data and newly adds function items in orbit, flexibility is high, all functions are realized on the basis of the FPGA, star sensor application software data are collected and monitored in real time, star sensor running status is guaranteed, and star sensor use precision and security are improved.

Description

technical field [0001] The invention relates to an on-orbit maintenance system and method for a star sensor. Background technique [0002] The star sensor is a high-precision spacecraft attitude measurement instrument, which is mainly used for three-axis attitude measurement and spacecraft navigation of the spacecraft. Its accuracy and working status play an important role in the attitude measurement, control and reliability of the spacecraft. The space environment has a great influence on the on-orbit operation status of star sensors. With the continuous change of the on-orbit operating environment, if the star sensor works in a high-radiation space environment for a long time, it will have an adverse effect on the accuracy and life of the star sensor. Once a single particle overturns the data of the internal storage unit of the star sensor, the star sensor The operational status of the sensors in orbit cannot be guaranteed. If relying solely on the star sensor itself and...

AI Technical Summary

Problems solved by technology

With the continuous change of the on-orbit operating environment, if the star sensor works in a high-radiation space environment for a long time, it will have an adverse effect on the accuracy and life of the star sensor. Once a single particle overturns the data of the internal storage unit of the star sensor, the star sensor The operational status of sensors in orbit cannot be guaranteed

If you rely solely on the star sensor itself and the reliability measures of the entire star, it may cause the accuracy of the star sensor output attitude to decrease, or even cause deadlock to cause the star sensor to fail to output the attitude normally.

Images