机载灵巧弹药 MEMS 陀螺漂移的快速估计算法

针对 MEMS 陀螺误差大的问题，提出了机载灵巧弹药 MEMS 陀螺漂移的快速估计算法。首先建立简化 MEMS 陀螺误差模型，提出 HMM/RLS 算法的零时延随机漂移处理算法，以解决 FIR、HMM/KF 等处理方法在滤波 时延和效果上的矛盾。然后由弹载 MEMS 陀螺测量误差和安装角误差耦合得到参数区别，由此推导出快速 MEMS 陀螺零偏快速两点估计算法。该算法能在 2.5 s 内完成对 MEMS 陀螺零偏的估计补偿，其估计准确度达到 90%以上。 数学仿真和靶试数据处理的结果表明：HMM/RLS 可以达到随机漂移处理的零时延，并兼顾了滤波时延和带宽。

Rapid Estimation Method of MEMS Gyro Drift for Airborne Smart Bomb

A bomb-borne MEMS gyro drift fast estimation algorithm of airborne smart bomb (SSB) for aircraft was presented to solve the large MEMS gyro error. Firstly, simplified MEMS gyro error model had been established, HMM/RLS no-delay pretreatment algorithm of gyro drift had been presented to solve the conflict about time delay and bandwidth of FIR or HMM/KF method. Then, the parameter difference due to MEMS measurement error and fix error angle of aircraft and bomb, which could be utilized to reckoned the rapid 2 points estimation algorithm of MEMS drift. The MEMS drift could be estimated and compensated in 2.5 s based on the presented method, and the accuracy can be obtained up to 90 percent. The simulation and experiment result proved that HMM/RLS method was a non-delay drift processing method, which could make a balance between the time delay of filter and bandwidth of signal.