Difference beam aided target detection in monopulse radar

作者：Cai Fei^*; Fan Hongqi; Song Zhiyong; Fu Qiang

来源：Chinese Journal of Aeronautics, 2015, 28(5): 1485-1493.

DOI：10.1016/j.cja.2015.08.007

• Detection
• Difference beam
• Monopulse radar
• Sum beam
• Generalized likelihood ratio test

The classical detection step in a monopulse radar system is based on the sum beam only, the performance of which is not optimal when target is not at the beam center. Target detection aided by the difference beam can improve the performance at this case. However, the existing difference beam aided target detectors have the problem of performance deterioration at the beam center, which has limited their application in real systems. To solve this problem, two detectors are proposed in this paper. Assuming the monopulse ratio is known, a generalized likelihood ratio test (GLRT) detector is derived, which can be used when targeting information on target direction is available. A practical dual-stage detector is proposed for the case that the monopulse ratio is unknown. Simulation results show that performances of the proposed detectors are superior to that of the classical detector.

• 出版日期2015-10
• 单位中国人民解放军国防科学技术大学