基于光电校正惯性导航系统的光电桅杆方位角度的修正

针对驻车情况下光电桅杆系统的工作特殊环境，提出基于光电校正INS的光电桅杆方位角度修正方法。采用光电系统定时瞄准某一固定目标，获得参考方位角修正光电系统中惯性导航系统(INS)的方位角误差，然后采用该误差修正INS的方位角，实现抑制INS的方位角误差发散，提高长时间工作情况下光电系统方位角精度。实验表明，在桅杆摆动造成光电系统瞄准目标时的等效方位角误差为0.06°的情况下，以STIM300作为IMU的INS，采用提出的修正方案在60 min内的方位角误差为0.059°，而没有进行修正时在31 min内的误差发散到1.14°。

Azimuth correction of optoelectronic mast based on EO calibrated INS

According to the special situation of optoelectronic mast system working in parking state, a method for correcting azimuth of optoelectronic mast based on inertial navigation system (INS) calibrated by optoelectronic system was researched. The optoelectronic system was utilized to regularly aim a static target, and the reference azimuth was got to correct the azimuth error of the INS of optoelectronic system.Then the divergence of the azimuth error of the INS was restrained to improve the azimuth accuracy of the photoelectric system under a long time work. The results of experiment show that, under the situation of 0.06° equivalent azimuth error caused by the mast swing interference when it aiming the target and using STIM300 as the IMU, the INS azimuth error is 0.059° in 60 min using the correction method proposed and 1.14° in 31 min without correction.