The retroreflector array consists of multiple cubic corner reflectors, and is used as a cooperative target for space attitude measurement. The position and normal direction of each cubic corner reflector directly affect the measurement accuracy. From the point of view of structural design, a series of practical precision extraction methods are put forward based on machining accuracy in this paper. After the verification of some experiments, the accuracy of the method can be controlled within 5', and the position accuracy is better than 0.05mm.
In order to meet the requirements of high-precision alignment of primary and secondary mirrors of space camera in
thermal environment, we develop a new supporting structure which can eliminate heat affect between mirrors
automatically. Through the simulation analysis, we have verified this structural design is feasible. According to
requirements of the optical system, an integrated machining scheme with three-bar supporting structure for the secondary
mirror is proposed. The automatic athermalization of the primary and secondary mirrors supporting structure is
confirmed by structural analysis and optimization. The displacement between the primary mirror and secondary mirrors
in the thermal environment range of -20° ~ +60°C is analyzed by using the PATRAN software, and the results show the
position change is within 0.01mm. The structural size of the secondary mirror supporting cylinder is optimized, and the
effect of stray light suppression for the multilayer sleeve visor is analyzed and verified by using the TRACEPRO
software. The results show that the proposed structural design can achieve the high stability of the primary and
secondary mirrors supporting structure and the good effect of stray light suppression.