Abnormal data equalization processing method, device, equipment and storage medium

Abstract

The invention discloses an abnormal data equalization processing method, a device, equipment and a storage medium. The method comprises the steps: repeatedly carrying out the random sampling of normaldata and abnormal data forming actual environment data, and mixing a plurality of groups of obtained random sampling data with the actual environment data; constructing random abnormal data based onclustering analysis, and mixing the random abnormal data and normal data with actual environment data; and generating virtual data based on the environmental effect, and mixing the virtual data with the actual environmental data. In the implementation process, the three steps can be randomly combined and carried out, the balance of abnormal data is greatly improved, the over-fitting problem of thecorrelation model can be reduced as much as possible, a more accurate analysis result is obtained, and the requirements for on-orbit spacecraft abnormal data analysis and space environment correlation model construction are met.

Description

technical field [0001] The present invention generally relates to the technical field of on-orbit analysis and data processing of spacecraft space environment effects, and in particular relates to an equalization processing method, device, equipment and storage medium for abnormal data. Background technique [0002] The spacecraft in orbit will be affected by the space environment, and the space radiation environment will cause electrostatic discharge, single particle, total dose and other effects on the spacecraft, which will affect the on-orbit operation of the spacecraft. In order to identify and warn the impact of the abnormality of the spacecraft in orbit, it is necessary to use the existing abnormal data of the spacecraft in orbit and combine the space environment of the spacecraft to carry out data analysis. At present, the main data analysis methods mainly include: [0003] 1. Use the time scale to directly correspond to the space environment before and after the abn...

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Problems solved by technology

[0005] 3. Detailed analysis of the spatial environment fluctuations before and after the occurrence of individual significant abnormal events, this method has certain limitations;

[0006] For the above analysis methods, the analysis results have certain limitations and false positive rates, which cannot reveal the potential relationship between environmental changes in actual space and spacecraft anomalies.

[0007] The reason, on the one hand, is that the spacecraft is in a state where it cannot be inspected in place, and the identification of its abnormality comes from a limited amount of telemetry data. Usually, it is impossible to accurately locate the fault, and the impact can only be checked one by one through fault tree sorting. The accuracy of anomaly discrimination cannot be guaranteed; on the other hand, because the spacecraft has also carried out a lot of environmental effect protection design work in the design stage, the actual number of anomalies in orbit is very small. The data is an extremely unbalanced dataset, which makes it extremely difficult to match the anomalies to the spatial environment

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