Study on the validity of ground thermal balance test for low-temperature optical remote sensor

For large-aperture cryogenic optical remote sensors, this proposal outlines a thermal balance test layout and process design for heat pipes and radiators, considering ground testing constraints. Test conditions are set based on typical operational modes to fully validate the thermal control system. The design includes a detailed space simulation chamber and external heat flux analysis to match on-orbit conditions. By comparing test data with on-orbit performance, the ground tests effectively verify the thermal control system’s accuracy.