The precisions of some units fail to meet the requirement because of all kinds of errors.Using the simulation,4000 units running for testing have been finished on small focal panel system.

• 由于各种误差的存在，某些单元的精度达不到要求，利用小焦面系统对4 000个单元进行逐批跑合测试，通过星像仿真实验完成了4 000个单元的精度跑合测试。