On-orbit spacecraft electrification risk assessment method based on multi-factor synergy

Abstract

The invention discloses an on-orbit spacecraft charging risk assessment method based on the synergistic effect of multiple factors. The invention can be used for quantitatively evaluating the risk ofcharging effect of the spacecraft in orbit. The invention relates to a risk assessment method for internal charging effect according to the real statistical analysis of internal charging effect causedby real-time change of space high-energy electronic environment of a spacecraft in orbit, which takes full account of the accumulation of high energy electrons, operational orbital environment, as well as the impact of spacecraft recovery on the risk of internally charged effects, and quantifies the risk value of internal charging effect, and can intervene the risk of internal charging effect caused by spacecraft in real time and make corresponding emergency plan to avoid the irrecoverable failure of spacecraft caused by internal charging effect in space, thus playing an important role in improving the safe and stable operation of spacecraft in orbit.

Description

technical field [0001] The invention relates to the technical field of on-orbit spacecraft protection, in particular to a method for quantitatively assessing the electrification risk in an on-orbit spacecraft based on multi-factor synergy. Background technique [0002] During the orbital operation of the spacecraft, frequent events such as solar flares, solar coronal mass ejections, geomagnetic storms, and geomagnetic substorms cause a large number of high-energy electrons to be injected into the Earth’s radiation belt, increasing its flux. These high-energy electrons (0.1 ~ 10MeV) can directly penetrate the surface structure of the spacecraft and the shell of the instrument and equipment, and be embedded in the insulating medium such as the circuit board and the coaxial cable insulation layer inside the spacecraft to cause the internal electrification effect, resulting in damage to the electronic system of the spacecraft and internal materials. Abnormalities and failures su...

AI Technical Summary

Problems solved by technology

However, the space environment is complex, and the space environment disturbance caused by active solar activities is frequent, causing frequent occurrence of electrification effects in space, especially the abnormalities and frequent failures caused by internal electrification effects in my country's medium and high orbit spacecraft represented by military satellites

Space environment early warning and satellite risk response urgently need to develop risk assessment technology for satellite individual differences, but there is no risk assessment method for in-orbit electrification effects caused by spacecraft space environment

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