Efficient methods of doppler processing for coexisting land and weather clutter

The joint suppression of returns from land and weather clutter is required in many radar applications. Although the optimal method of land-weather clutter suppression is known, the solution is usually not practical to implement. In this paper, we propose a method that employs rank-1 and rank-2 approximations on the weather clutter correlation matrix to obtain suboptimal but simpler detectors which are easier to implement. The performance of the proposed detectors is compared with the optimal detector and some other detectors commonly used for clutter suppression.