Detection-Discrimination Method for Multiple Repeater False Targets Based on Radar Polarization Echoes

作者：Zong, Zhi wei^*; Shi, Long fei; Li, Yong zhen; Wang, Xue song

来源：Radioengineering, 2014, 23(1): 104-110.

• Multiple repeat false targets
• DRFM
• jammer
• target discrimination
• polarization
• radar

Multiple repeat false targets (RFTs), created by the digital radio frequency memory (DRFM) system of jammer, are widely used in practical to effectively exhaust the limited tracking and discrimination resource of defense radar. In this paper, common characteristic of radar polarization echoes of multiple RFTs is used for target recognition. Based on the echoes from two receiving polarization channels, the instantaneous polarization radio (IPR) is defined and its variance is derived by employing Taylor series expansion. A detection-discrimination method is designed based on probability grids. By using the data from microwave anechoic chamber, the detection threshold of the method is confirmed. Theoretical analysis and simulations indicate that the method is valid and feasible. Furthermore, the estimation performance of IPRs of RFTs due to the influence of signal noise ratio (SNR) is also covered.

• 出版日期2014-4
• 单位中国人民解放军国防科学技术大学