Radar Resolution Improvements Using Reference Target Sliding Method in RDM

A novel reference target sliding method in the frequency domain of post-match-filtered radar data is presented and shown that target resolution can be improved to levels much finer than classical bandwidth-limited resolution metrics. The methods developed here have broad application and can be used to provide crossing target resolution, estimation parameter refinement, and beam-phase correction in the presence of overlapping targets. Additionally, the reduced requirement for bandwidth in target resolution will allow for low-bandwidth systems to perform on par with higher-bandwidth systems in several applications. The proposed methods are also well-suited to improve detection and tracking performance in lower cost arrays such as non-actively scanned arrays that employ digital beamforming.