Spacecraft multi-telemetry parameter analysis window partitioning method

Abstract

The invention provides a multi-telemetry parameter analysis window division method for a spacecraft. By analyzing the multi-telemetry parameter association cycle, the reference parameters are selected to obtain division features, and the accurate division on the time scale of the multi-parameter analysis window is realized. The present invention divides the analysis window by the reference division feature of the telemetry parameter, instead of using a fixed or sliding window for division, avoids the window offset caused by factors such as space environment or channel transmission, and realizes the accuracy of the analysis window of the telemetry parameter segmentation, which improves the accuracy of subsequent feature extraction and diagnostic detection. The invention synchronously divides a plurality of telemetry parameters through the reference parameters, realizes the window alignment on the time scale, enhances the analyzability of the telemetry data, and is more conducive to analyzing and mining the association relationship among multiple parameters.

Description

technical field [0001] The invention belongs to the field of spacecraft telemetry data analysis, and in particular relates to a multi-telemetry parameter analysis window division method of a spacecraft. Background technique [0002] With the development of information technology, fault feature extraction and diagnosis technology has been greatly developed in the field of spacecraft telemetry data analysis. Among them, determining the feature analysis window is a basic problem in the analysis of spacecraft telemetry data, which directly determines the accuracy and reliability of feature extraction and diagnostic detection. [0003] At present, the multi-telemetry data analysis of spacecraft mostly uses fixed windows or sliding windows to divide each parameter into multiple analysis subsequences in turn. There are two problems in this division method: First, due to the maneuvering characteristics of the spacecraft and the complexity of the space environment, it is difficult t...

AI Technical Summary

Problems solved by technology

There are two problems in this division method: First, due to the maneuvering characteristics of the spacecraft and the complexity of the space environment, it is difficult to accurately divide each period of the telemetry parameters by using a fixed period value to divide the window, thus forming the offset pair feature Second, due to the complexity of the spacecraft structure, individual parameters are divided independently, lacking comprehensive consideration of the spacecraft’s operating status from an overall perspective, and it is difficult to align the division windows of multiple associated parameters on the time scale

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