Space-time block codes and compressed sensing in spatially diverse radars

Radar system with several transmitters and/or receiver antennas have been in increasingly focus over the years. An often desired objective with spatially diverse multiple transmitters is that the antennas should ideally emit orthogonal waveforms. This condition can be difficult to realize in practice and as an alternative space-time block coding methods can be implemented. This work investigates a multiple antenna setup where non-orthogonal noise waveforms are utilized and emit through a block coding structure at the transmitters. The receiver employs a compressed sensing approach where only a subset of incoming data is stored and processed. We demonstrate that such a system can operate well and compressed sensing techniques allow for a significant reduction in sampling amount and block duration interval.