抗差估计在光纤陀螺信号处理中的应用

Application of robust estimation to FOG signal

为了消除静基座寻北时基座扰动对寻北精度的影响,基于抗差估计提出了一种处理光纤陀螺信号的方法。采用最小二乘估计和抗差估计对光纤陀螺的输出值进行处理,比较了信号中残留的噪声项及干扰项的处理效果。计算结果表明:当载体运动比较剧烈时,抗差估计可以有效剔除异常干扰,从而可以获得较高的寻北精(密)度。

A new approach based on robust estimation was proposed to eliminate the effect of base disturbance on the precision of the north seeker mounted on a stationary carrier. Least squares estimation and robust estimation were performed and compared for the noise and the disturbance of the FOG signal. The calculations show that the robust estimation can effectively degrade the disturbances, and in turn, can greatly improve the precision of FOG north seeker when the carrier undergoes severe interferences.