Range correction method based on error model and disturbance identification

The range error model of rockets with ideal stabilization was built up. Its physical nature, function expressions, and range forecast precision were analyzed. The results of theoretical analysis indicate that not only the windbags of rang but also other terminal parameters of active phased trajectory were functions of disturbance. It means that the course of range forecast contain two steps. One is disturbance identification based on the observational parameters of trajectory, and the other is range forecast with disturbance. The conclusion is that the range forecast precision is determined by the accuracy of disturbance identification. A new method for range correction of rockets based on both error model and disturbance identification is established, so that a good simulation result is obtained.