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- Title
Detection-Discrimination Method for Multiple Repeater False Targets Based on Radar Polarization Echoes.
- Authors
Zhi-wei ZONG; Long-fei SHI; Yong-zhen LI; Xue-song WANG
- Abstract
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 defence 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.
- Subjects
REPEATERS (Digital communications); RADAR polarimetry; TAYLOR'S series; MATHEMATICAL expansion; ANECHOIC chambers; PROBABILITY theory; SIGNAL-to-noise ratio
- Publication
Radioengineering, 2014, Vol 23, Issue 1, p104
- ISSN
1210-2512
- Publication type
Article