Analysis and design of onboard interface of Tianwen-1 high-resolution camera

Abstract：To improve the mechanical and thermal performance of the onboard interface of Tianwen-1' s high-resolution camera，the structural design is determined by using inputs of the fundamental frequency of the camera and the satellite temperature.First，the onboard interface support requirements of a Mars highresolution camera are analyzed，and common support methods for the onboard interface of an optical re• mote sensor are introduced.Second，the relationship between the optical performance of the remote sen• sor and the onboard interface is established.The sensitivity matrix of the spatial position change of the in• terface to the mirror surface shape is determined by performing a Monte Carlo analysis，and the interface design parameters affecting the stiffness and thermal stability of the entire machine are identified.Then，