主被动双光复合系统平行度校正研究

针对主被动双光复合系统中存在激光主动发射视场与红外被动成像视场平行度（一一对应位置）偏差问题，提出了主被动双光复合系统平行度校正方法，并开展了理论研究和实物仿真测试。首先，推导了激光主动发射视场与快速反射镜（Fast Steering Mirror，FSM）角度对应关系；其次，根据激光发射视场与红外探测视场提出了一种基于多项式拟合的平行度修正校正方法；最后，通过构建实际测试平台，进行平行度标定、求解、修正。试验结果表明:在±1.4°的激光指示视场和±1.4°的红外中心视场中，经过系统平行度修正后，实际平行度偏差可由0.8 mrad降低至0.1 mrad，进一步提高激光对目标的指向精度。

Research on the parallelism of the active and passive dual-band (laser/IR) composite system

Aiming at the deviation of the parallelism(on to one correspondence position) between the active laser field of view and the infrared passive field of view in the parallelism correction of the active and passive dual-band (laser/IR) composite system, the parallelism correction method of the active and passive dual-band (laser/IR) composite system was proposed and the theoretical research and physical simulation test were carried out. First, derived the angle correspondence between the active laser emission field of view and the fast steering mirror. Secondly, a parallelism correction method based on polynomial fitting is proposed according to the laser emission field of view and infrared detection field of view. Finally, the actual test platform is constructed to calibrate, solve and correct. The test results showed that the actual maximum deviation can be reduced from 0.8 mrad to less than 0.1 mrad in the ±1.4° indicated field of view of laser and ±1.4° infrared central field of view, which further improve the aiming accuracy of the laser.