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Method for surface charging analysis of satellite

A satellite and current technology, applied in the field of satellite surface electrification analysis software, can solve problems such as large errors, inability to give more detailed analysis results, and poor pertinence

Inactive Publication Date: 2012-10-31
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology

At present, it is impossible to analyze the electrification of satellites from the perspective of the entire satellite. Simple estimates are made based on the principle of Langmuir probes, which is not only not targeted, but also has large errors.
According to the current method, a single charging potential value is usually given, and more detailed analysis results cannot be given

Method used

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  • Method for surface charging analysis of satellite
  • Method for surface charging analysis of satellite
  • Method for surface charging analysis of satellite

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Embodiment Construction

[0022] The theoretical basis for studying satellite surface charging is the current balance equation. By determining the analytical expressions of various currents, the potential distribution on the satellite surface can be solved. In geosynchronous orbit, the space plasma interacting with the surface of the satellite can be approximated as a thick sheath, because the radius of gyration of the electrons and ions in the space plasma, that is, the Debye length, is greater than the size of the satellite, and the velocity of the satellite is smaller than that of the surrounding plasma body heat rate.

[0023] Build a current collection model:

[0024] The electronic current, ion current, light effect current, secondary current, backscattering current and other equivalent currents collected on the surface of the satellite may reach a dynamic balance at a certain potential on the satellite. At this time, the algebraic sum of the current on the entire surface of the satellite is zer...

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Abstract

The invention relates to a method for surface charging analysis of a satellite, in order to intensively solve the problem of surface charging of the high-voltage solar cell array of geosynchronous satellites. The method can achieve the simulation analysis of the surface charging condition of the satellite by use of a software graphic user interface to set the satellite orbit environment parameters, the satellite main body material parameters, and the high-voltage solar cell array material parameters of the satellite, and can automatically generate a technical report.

Description

technical field [0001] The present invention relates to a software for analyzing the electrification on the surface of a satellite, in particular to a software for simulating and analyzing the electrification on the surface of a geosynchronous orbit satellite's high-voltage solar battery array. Background technique [0002] Foreign countries have developed a variety of software for satellite surface charge analysis, but due to technical blockade, we can only develop satellite surface charge analysis software with our own intellectual property rights. At present, this work has not made a breakthrough in China. [0003] The problem of surface charging of high-voltage solar cell arrays of geosynchronous orbit satellites is representative to a certain extent, mainly manifested in the charged environment and the work of satellite solar cell arrays reaching hundreds of volts. At present, it is impossible to analyze the electrification of satellites from the perspective of the enti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 冯伟泉刘业楠徐炎林王志浩
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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