An autonomous control method and system for safety protection of satellite South Atlantic anomaly area

Abstract

The invention discloses a satellite south Atlantic anomaly area safety protection autonomous control method and system. The method comprises the following steps: analyzing the characteristic information of the south Atlantic anomaly area and establishing a load autonomous safety protection judgment criterion; calculating the state value S of the south Atlantic anomaly area by the numerical controlsubsystem according to the load autonomous safety protection criterion; and determining the high energy payload, the medium energy payload, the low energy payload and whether the integrated controller enters the anomaly area according to the calculated state value S of the south Atlantic anomaly area. The accurate identification of the satellite passing through the south Atlantic anomaly area canbe realized.

Description

technical field [0001] The invention belongs to the field of satellite technology, and in particular relates to an autonomous control method and system for safety protection of a satellite South Atlantic anomaly area. Background technique [0002] Because of the negative magnetic anomaly in the South Atlantic Anomaly (SAA), the height of the inner radiation belt in this area is significantly reduced, and the minimum height can be reduced to about 200km. Therefore, this area is the area that causes the most serious radiation hazards to low-orbit spacecraft. , is a high-incidence area for abnormal operation or failure of charged particle-induced equipment. At the center of the region, the high-energy proton flux is often hundreds of times greater than the cosmic ray background. [0003] For the HXMT ("Wisdom Eye") satellite, when the satellite passes through the South Atlantic Anomaly (SAA), the high-energy protons and electrons in space will cause radiation damage to the sat...

AI Technical Summary

Problems solved by technology

This method is extremely inconvenient for the long-term work of the payload in orbit, and requires frequent ground intervention to complete the setting of the working mode of the payload subsystem, and because the current method of judging the satellite entering and exiting the SAA anomaly area is mainly based on model data, it lacks certain accuracy. It is difficult to accurately identify the SAA area

Images