Detection device for spacecraft surface charging effects

Abstract

The invention provides a detection device for spacecraft surface charging effects, which comprises a driving module, a potential sensor, an analog signal processing circuit and a digital signal processing circuit. The monitoring device adopts a closed loop circuit design. When nonlinear distortion happens to the system, nonlinear distortion at the output end of the potential sensor is overlapped with waveforms at the input end, amplified net input signals are neutralized with nonlinear distortion, and thus, linearity and stability of the device can be effectively improved, and the detection precision is improved. In addition, the potential sensor is small in size, light in weight, and can be carried at each position inside the spacecraft for comprehensive surface potential detection; and as non-contact measurement is adopted, the potential sensor is not contacted with the measured surface of the spacecraft, and charge measurement on the measured surface is not influenced.

Description

technical field [0001] The invention relates to the technical field of aerospace exploration, in particular to a monitoring device for the electrification effect on the surface of a spacecraft. Background technique [0002] A spacecraft operating in space will be impacted and collided by high-energy charged particles in space, which will cause changes in the structure of the spacecraft, which will cause the reference point of the instrument potential to float, and cause errors in some on-orbit detection data, especially in large space vehicles. On the instrument, the potentials in different areas are different. This potential difference will cause the charge flow of the satellite structure system, and in severe cases, discharge will occur, causing damage to scientific instruments and endangering the safety of the spacecraft. [0003] Early research in China did not pay much attention to the electrification effect of satellites. However, as the intensity of solar activity has...

AI Technical Summary

Problems solved by technology

[0002] A spacecraft operating in space will be impacted and collided by high-energy charged particles in space, which will cause changes in the structure of the spacecraft, which will cause the reference point of the instrument potential to float, and cause errors in some on-orbit detection data, especially in large space vehicles. On the instrument, the potentials in different regions are different. This potential difference will lead to the flow of charges in the satellite structural system, and in severe cases, discharge will occur, causing damage to scientific instruments and endangering the safety of the spacecraft.

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