Multichannel space-time adaptive processing

A new recursive processing technique for space-time adaptive processing (STAP) is developed and applied to the airborne MTI radar problem. Unlike the conventional approach, the expanding block structure of the covariance matrix is exploited for updating the covariance matrix inverse as each pulse is received. The resulting block augmented matrix (BAM) inversion algorithm results in significant computational throughput gain. Further, the residual information in the incoming pulse is used to generate an adaptive stopping criterion that addresses the sample data support problem.