Orthogonal Space Projection (OSP) Processing for Adaptive Interference Cancellation

An Orthogonal Space Projection (OSP) processing methodology is introduced that achieves interference cancellation within a single time compression interval, e.g. pulse interval for fast time or dwell interval for slow time. The OSP technique can operate in pre-compression or post-compression spaces where covariance matrix development and compression are performed simultaneously. OSP projects the signal and interference into a space that is matched to the signals of interest and into a space that is mismatched to the signals of interest similar to a blocking matrix in conventional adaptive processing methods. The output of the OSP process is a two-dimensional image space that combines signal compression and interference cancellation. A pre-compression OSP technique is applied to array processing for jammer suppression and a two-dimensional array example is used to assess SINR performance.