Method for assessing deep charging and discharging risks of satellite

Abstract

The invention provides a method for assessing deep charging and discharging risks of a satellite. The method comprises the following steps: step one, acquiring a flight track of the satellite; step two, acquiring launch time and designed service life of the satellite; step three, acquiring mechanical frames of the satellite and an instrument and types of dielectric materials; step four, calculating an external environment of the satellite by using a Tiamotech tool, wherein the external environment of the satellite comprises high-energy electrons and high energy protons; and step five, using parameters of a simulating tool material library and selecting or inputting the parameters, and calculating dielectric current in the satellite so as to finish deep charging simulation of the satellite at a targeted position; and step six, visualizing a calculating result by using the Tiamotech tool. A series of problems of contradiction between assessment precision and assessment machine-hour in an operational assessment process of radiation effect hazards of the satellite in a spacecraft researching process are solved. By the method, assessment on satellite deep charging and discharging caused by a space radiation environment is realized.

Description

technical field [0001] The invention relates to an evaluation method, in particular to an evaluation method for satellite deep charging and discharging risks. Background technique [0002] Elements such as high-energy electrons, high-energy protons, and heavy ions in the space radiation environment will cause radiation effects on satellites. Among them, high-energy electrons will cause radiation doses and charging effects to satellites, while high-energy protons and heavy ions will also cause another type of radiation effect. , which is called the single event event effect. [0003] In the process of passing through matter, space particles will lose energy due to the resistance formed by the nucleus and extranuclear electrons, and the lost energy will be transferred to the blocking matter. The energy transferred to the blocking matter in a unit is called It is called linear energy transfer. Continuous LET transfer will lead to device or material radiation dose. When the LE...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for assessing the risk of deep charging and discharging of satellites, which solves the gap between the assessment accuracy and the evaluation time of the operational assessment process of the radiation effect hazard of the satellite in the spacecraft development process. conflicts and other issues

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