Waveform Preconditioning for Clutter Rejection in Multipath for Sparse Distributed Apertures

The idea of preconditioning transmit waveforms for optimal clutter rejection in radar imaging is presented. Waveform preconditioning involves determining a map on the space of transmit waveforms, and then applying this map to the waveforms before transmission. The work applies to systems with an arbitrary number of transmit- and receive-antenna elements, and makes no assumptions about the elements being co-located. Waveform preconditioning for clutter rejection achieves efficient use of power and computational resources by distributing power over a frequency band in an effective way and by eliminating clutter filtering in receive processing.