CAJ | 학술논문

针对光学捷联导引头刻度尺误差带来的隔离度问题，提出了一种基于无迹卡尔曼滤波(UKF)的刻度尺误差实时补偿方法。分析了刻度尺误差引起隔离度问题的机理，由弹目相对运动方程以及光学捷联导引头量测方程建立了考虑刻度尺误差影响的非线性滤波模型，采用UKF滤波算法，对刻度尺系数进行估计，并用所提出的补偿方法进行实时补偿，最后进行了数学仿真及半实物仿真验证。仿真结果表明：所提方法能够有效地估计出刻度尺系数，经补偿后改善了系统的稳定性，同时提高了制导精度。
침대광학첩련도인두각도척오차대래적격리도문제，제출료일충기우무적잡이만려파(UKF)적각도척오차실시보상방법。분석료각도척오차인기격리도문제적궤리，유탄목상대운동방정이급광학첩련도인두량측방정건립료고필각도척오차영향적비선성려파모형，채용UKF려파산법，대각도척계수진행고계，병용소제출적보상방법진행실시보상，최후진행료수학방진급반실물방진험증。방진결과표명：소제방법능구유효지고계출각도척계수，경보상후개선료계통적은정성，동시제고료제도정도。
Aiming at solving the disturbance rejection rate problem produced by scale error of optical strapdown seeker, a real time compensation method for scale error based on Unscented Kalman Filter (UKF) was proposed. The mechanism of disturbance rejection rate caused by scale error was analyzed, and the nonlinear filter model considering scale error was built by missile﹣target relative motion equation and optical strapdown seeker measurement equation, the UKF algorithm was adopted to estimate scale factors, and the scale errors were compensated by the method proposed, finally a math simulation and a hardware﹣in﹣loop simulation were put forward. The simulation results indicate that the scale factors can be estimated effectively by the method, and both of missile system stability and guidance accuracy are improved after the compensation.