A Pre-warning Method Based on Correlation Relationships for On-orbit Satellites Affected by Space Environment

Abstract

The present invention provides an early warning method based on the relationship between satellites in orbit affected by the space environment, which includes: obtaining the time-domain correlation Xo(T) between the two whose reliability and correlation exceed the set threshold; obtaining satellite The quantitative index G(t) of the computer SRAM device in the star mission center affected by the space radiation environment at time t; multiple supportability values ​​and multiple credibility values ​​are obtained according to the correlation between G(t) and A(t), Select an association relationship with the largest support value among multiple support values. If the support value is greater than 0.6, the alarm information is "yes" and the confidence value corresponding to the support value is the warning value Y( t), if the support value is less than or equal to 0.6, the alarm information is "none". The present invention can carry out early warning of satellite on-orbit anomalies through the analysis of the relationship between single event effects and satellite on-orbit anomalies and according to the real-time data of space-borne high-energy particle flux detection equipment, and has the advantages of high reliability, pertinence and accuracy.

Description

technical field [0001] The invention belongs to the technical field of on-orbit operation management of spacecraft, and in particular relates to an early warning method based on an association relationship for an on-orbit satellite to be affected by a space environment. Background technique [0002] Statistics at home and abroad show that the space radiation environment caused by the Earth's radiation belt (hereinafter referred to as the radiation belt) is one of the main causes of abnormal spacecraft failures. Among the more than 5,000 fault records collected by the US NGDC (National Geophysical Data Center) during 1966-1994, about half were diagnosed as caused by the space environment, and about 2,300 of them were caused by the space radiation environment. The statistics of Hecht and Remez et al. in the United States in 1996 showed that "among the failures and abnormalities of spacecraft in the past 40 years, more than 40% were caused by design and space environment in the...

AI Technical Summary

Problems solved by technology

However, in the actual on-orbit management work, it is found that 80% of the anomalies are triggered by space environmental factors, and the telemetry parameters associated with many anomalies will undergo sudden changes when anomalies occur, which is difficult to find through the prediction of telemetry parameters

Therefore, for such anomalies, the existing early warning methods are less effective

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