An improved spatial smoothing technique based on covariance matrix;

Multiple targets angle tracking algorithm based on the elements of the covariance matrix;

A Storage Design of the Covariance Matrix and It s Derivative in the Algorithm of Mixed Model;

Adaptive filter combined with synthetically estimating systematic errors and covariance matrices of systematic error can be used to resist the effect that is induced by the systematic errors or area systematic errors during the data of dynamic navigation is processed, but it is difficult to control the abnormal disturbance.

An improvement of covariance differencing approach was made.

A revised algorithm is proposed toreconstruct a far field approximation space co-variance matrix at the same orientation,which isused to modify the space covariance matrix ob-tained by a uniform Iinear array from finite dis-tance mechanical noise sources using.