Motion analysis of precession space target based on optical cross section

In order to solve the problem of low accuracy in the calculation of space objective optical cross section(OCS), the improved Phong model based on the BRDF data of the space object was used, and the surface of the satellite model was folded. In the STK, the motion scene of the satellites in different precession states was designed. The OCS timing data of these satellites were calculated respectively. The influence of the precession angle on the optical scattering characteristics of the satellite was found by comparing the data periodically. Further research shows that when the precession angle of the satellite is small, the rotation speed of the satellite can be retrieved from the optical scattering characteristic data of the satellite. When the precession angle of the satellite is larger than the critical value(for the scenario designed in this paper, the value is 30), it becomes impossible to invert the periodicity of the satellite from the optical scattering characteristic data of the satellite.