Cooperated Moving Target Detection Approach for PA-FDA Dual-Mode Radar in Range-Ambiguous Clutter

This paper proposes a cooperated range ambiguous clutter suppression method for moving target detection in the background of range-ambiguous clutter with a phased array (PA)-frequency diverse array (FDA) dual-mode radar. With the FDA mode, the range-ambiguous clutters are discriminated in the transmit spatial frequency domain, and thus the clutter covariance matrixes (CCMs) corresponding to unambiguous and ambiguous regions can be independently estimated. Therefore, the enhanced CCM can be reconstructed by using a linear combination of these distinguished CCMs from different range regions. With the PA mode, the enhanced CCM is applied, thus taking advantages of its high beampattern gain as well as alleviating the range ambiguous clutter suppression problem. Simulation results are presented to verify the effectiveness of the proposed method in range-ambiguous clutter scenarios.

Automated summary

This paper proposes a method for cooperated range ambiguous clutter suppression in moving target detection using a phased array-frequency diverse array dual-mode radar. The method discriminates range-ambiguous clutters in the transmit spatial frequency domain and independently estimates clutter covariance matrixes for unambiguous and ambiguous regions. The enhanced clutter covariance matrix is reconstructed using a linear combination of the distinguished matrixes. The method takes advantage of the high beampattern gain of the phased array and alleviates the range ambiguous clutter suppression problem.