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As the main load of remote sensing satellite, the performance of remote sensing camera directly affects the performance of remote sensing image data. The working environment of remote sensing camera is harsh space, which is full of various space environmental effects. Among them, the charge and discharge effect will lead to the accumulation of charge in the remote sensing camera, resulting in high-voltage discharge, resulting in the damage of electronic products in the camera. In addition, the continuous improvement of miniaturization and integration of remote sensing camera leads to the worse electromagnetic environment of remote sensing camera electronics system. Good grounding can reduce the electromagnetic interference caused by electromagnetic environment and other forms of inductive coupling, and ensure the safe and stable operation of remote sensing camera system. Firstly, this paper briefly introduces several common grounding methods, and compares and analyzes their specific implementation methods and differences. Then, combined with the relevant standards and specifications at home and abroad and the actual needs, this paper introduces the selection standards and reasons of aerospace grounding mode, as well as the current situation of satellite grounding. Then, according to the characteristics of the new remote sensing camera, such as the high-speed, high-frequency and integration of visible focal plane electronics, and the integration of high-power electronics products in the camera, a new hybrid grounding scheme is proposed in this paper. The scheme not only considers the current status of satellite grounding, but also integrates the relevant grounding standards and principles at home and abroad. The new hybrid grounding scheme can meet the high-performance needs of remote sensing cameras in the future.
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