Device and method for measuring satellite material surface electrostatic discharge pulse characteristics

Abstract

The invention relates to a device and a method for measuring satellite material surface electrostatic discharge pulse characteristics in the space plasma environment, and belongs to the field of measurement. The device comprises an electronic gun, a vacuum chamber, a vacuum pumping system, a grounded metal board, a reference pulse signal receiving antenna, arrayed pulse signal receiving antennas and a spectrometer. The method comprises the steps of placing satellite surface material samples into the vacuum chamber, start the vacuum pumping system, starting the electronic gun, regulating acceleration voltage and filament current of the electronic gun, conducting real-time monitoring on beams of the electronic gun by means of a Faraday cup, starting the spectrometer, respectively measuring frequency domains of discharge signals of the pulse signal receiving antennas of different positions, and conducting real-time monitoring on space distribution of discharge pulse radiation electromagnetic fields in an experiment process. An arc structure at the tail end of the grounded metal board resolves the problem of edge reflection of the radiation fields, and measurement of the space distribution of the radiation fields is conducted through the antennas.

Description

technical field [0001] The invention relates to a measuring device and method for the electrostatic discharge pulse characteristics on the surface of satellite materials in a space plasma environment, and belongs to the testing field. Background technique [0002] During the operation of the satellite in orbit, surface charging will occur due to the interaction between its surface material and the surrounding charged particle environment, and the space electrostatic discharge (SESD) generated by the charging can cause serious satellite failure. Foreign statistics show that satellite failures caused by space electrostatic discharge account for more than 50% of space environment failures. In geosynchronous orbit, when a satellite encounters a geomagnetic substorm environment, the non-equilibrium plasma will charge the surface of the satellite to more than 10,000 volts, and the electrostatic discharge generated is the main cause of communication satellite failure. In the polar...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a measurement device and method for the characteristics of electrostatic discharge pulses on the surface of satellite materials, mainly to solve the charging environment, electromagnetic pulse propagation environment and measurement problems of satellite surface materials

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