Electric signal feature extraction and recognition system oriented to aircraft flying process

Abstract

The invention discloses an electric signal feature extraction and recognition system oriented to aircraft flying process, particularly relates to a collection, processing, extraction and recognition system for electric signals of an aircraft. The system takes the electric signals of the aircraft as an object, is based on the process oriented to flying tasks and is suitable for convention testing of the aircraft at each stage and in various modes and combined testing of multiple aircrafts. By the system, dynamic data, which are more comprehensive and are based on the flying process, of the electric signals can be accumulated at a comprehensive testing stage and serve as a criterion to judge whether electric performance of the aircraft is normal or not, and the dynamic data exceed corresponding remote measuring indicators of a tested object in the aspects of accuracy and instantaneity; as a key link for verifying the aircraft, compared with conventional remote measuring of the aircraft, monitoring accuracy and rate of the system are improved remarkably on a number level, an efficient means is provided for comprehensive testing of the aircraft oriented for complex flying process, and level of judging electric performance working state of the aircraft on a system level is improved.

Description

technical field [0001] The invention relates to an electrical signal feature extraction and identification system, in particular to an electrical signal feature extraction and identification system oriented to the flight process of a spacecraft, in particular to a set of spacecraft electrical signal collection, processing, extraction and identification system, suitable for Routine tests on various stages and modes of spacecraft, as well as joint tests with multiple spacecraft. Background technique [0002] In order to complete difficult space missions, the application of combined spacecraft is becoming more and more common, and the grounding network relationship between each combination is the key element to ensure the normal electrical performance. The reference potential of the combined spacecraft refers to the single-point connection levels between locations. Since each device on the spacecraft has its own certain reference potential threshold, the normality of each devi...

AI Technical Summary

Problems solved by technology

As a contact measurement, the signal input negative terminal of the measuring equipment is directly connected to the negative terminal of the spacecraft under test, the measurement result is easily disturbed by the measured object, and it can only monitor the spacecraft under test, and cannot realize data storage and graphic display. Working in parallel with signal processing, the test spectrum analysis ability is weak, and the types and functions of signal processing that can be selected are extremely limited; the test of telemetry parameters basically depends on the telemetry channel, and due to the limitation of transmission speed, it can only be limited to functions performance testing, unable to capture transient changes in telemetry parameters

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