Adaptive space/frequency processing for distributed aperture radars

This paper deals a preliminary investigation into space-time-waveform adaptive processing for waveform diverse distributed apertures. The large baseline of such a distributed radar results in angular resolution that is orders of magnitude better than resolution of a monolithic system (single large radar) with the same power-aperture. This capability comes at the cost of grating lobes (multistatics with evenly spaced apertures) or high sidelobes (multistatics with randomly spaced apertures). This paper develops some preliminary solutions to these drawbacks associated with distributed apertures. In particular, the use of approximately logarithmic spacing with each aperture transmitting orthogonal waveforms provides excellent detection performance.