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利用卡尔曼滤波方法可对传感器精度进行状态估计.该文讨论了卡尔曼滤波中黎卡提方程的反问题,并对观测传感器精度以一定的估计误差进行数值寻优.短文与研究通讯“,”Using Kalman filter method the state estimation of sensor accuracy can be performed. It is an in- verse problem on the Riccati equation, and the observation sensor accuracy may be searched by using computer simulation.