Real-time detection method for total pressure change mode in on-orbit spacecraft cabin

Abstract

The invention relates to a real-time detection method for an in-cabin total pressure change mode of an on-orbit spacecraft, and the method comprises the steps: converting data into a standard file format through a data preprocessing module, carrying out the preprocessing according to the characteristics that the time series data of the on-orbit spacecraft has an outlier, the sampling frequency is not fixed, and a dynamic time series flow exists; converting the time sequence data into a form conforming to a neural network input specification; through a feature extraction module, on-orbit spacecraft data features are extracted on sensing fields of different sizes by adopting a multi-scale convolution kernel and a pooling window, and are used for identifying time series data of phase shifts of different degrees in the same mode; and through a judgment and identification module, a multi-classification task is disassembled into a pair of other binary classification tasks by adopting an N * binary classification method, mode identification is carried out on the total pressure time sequence data in the on-orbit spacecraft cabin, and unknown mode data is detected. According to the method, the random phase deviation problem and the unknown mode recognition problem of the in-cabin total pressure data of the on-orbit spacecraft are solved at the same time by using one model.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a real-time detection method of a total pressure change mode in an on-orbit spacecraft cabin. Background technique [0002] Monitoring and real-time detection of the operating status of on-orbit spacecraft is an important task of on-orbit spacecraft measurement and control. The purpose is to enable on-orbit spacecraft to maintain its normal function and maintain a healthy operating state. , to issue an alert in time. The monitoring of the total pressure in the orbiting spacecraft cabin is one of the key contents of the monitoring of the operating state of the orbiting spacecraft. In actual measurement and control, since there are many types of time series data to be transmitted by spacecraft telemetry, it is very important to detect its mode type. The variation law of the total pressure in the cabin of the spacecraft in orbit can be divided into two basic state categories: ma...

AI Technical Summary

Problems solved by technology

However, the output of the existing classification methods is one of the known n known categories (known patterns), and the data of unknown patterns will also be recognized as a known category (known patterns), resulting in recognition errors

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