High-resolution Long Range SFCW-Radar with multiplicative array

A highly sparse array based on combining multiplicative processing and Difference Pattern Processing (DPP) is presented. A thinning rate of more than 80% is demonstrated for a Step Frequency Continuous Wave Range Radar (SFCWRR) composed of a filled- and a highly thinned subarray in a cocentered configuration. The high resolution is achieved with the correlator whilst low spurious signal suppression with DPP technique is improved further by applying the iterative algorithm CLEAN. The performance of the proposed system is validated in simulation and measurements.