21 May 2015 Range resolution improvement in passive bistatic radars using nested FM channels and least squares approach
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Abstract
One of the main disadvantages of using commercial broadcasts in a Passive Bistatic Radar (PBR) system is the range resolution. Using multiple broadcast channels to improve the radar performance is offered as a solution to this problem. However, it suffers from detection performance due to the side-lobes that matched filter creates for using multiple channels. In this article, we introduce a deconvolution algorithm to suppress the side-lobes. The two-dimensional matched filter output of a PBR is further analyzed as a deconvolution problem. The deconvolution algorithm is based on making successive projections onto the hyperplanes representing the time delay of a target. Resulting iterative deconvolution algorithm is globally convergent because all constraint sets are closed and convex. Simulation results in an FM based PBR system are presented.
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Musa Tunç Arslan, Musa Tunç Arslan, Mohammad Tofighi, Mohammad Tofighi, Rasim Akın Sevimli, Rasim Akın Sevimli, Ahmet Enis Çetin, Ahmet Enis Çetin, } "Range resolution improvement in passive bistatic radars using nested FM channels and least squares approach", Proc. SPIE 9474, Signal Processing, Sensor/Information Fusion, and Target Recognition XXIV, 947414 (21 May 2015); doi: 10.1117/12.2176067; https://doi.org/10.1117/12.2176067
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