Fpga-Based Wigner-Hough Transform System For Detection And Parameter Extraction Of Lpi Radar Lfmcw Signals
Aperta, 2021
Online
unknown
Zugriff:
Low probability of intercept (LPI) radars using linear frequency-modulated continuous waveforms (LFMCWs) is rapidly proliferating in the military domain and posing a serious challenge to conventional electronic support receivers (ESRs). In this article, we provide a practical approach that can be used in digital ESR systems for real-time LFMCW radar signal detection and parameter extraction under challenging SNR levels. We proposed a modified version of the Wigner–Ville distribution (WVD), namely, short-time Wigner distribution (STWD), postprocessing steps, e.g., column-based thresholding of STWD combined with the Hough transform (HT), and a field-programmable gate array (FPGA) design as an embedded solution with low computational complexity. The performance of the proposed system is tested with MATLAB and hardware simulations using a signal database generated with different signal-to-noise ratio (SNR) levels. The system is then embedded into a Virtex-7 FPGA where the performance evaluations showed satisfactory detection results down to −6-dB SNR level, and parameter extraction results down to −8-dB SNR level.
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Fpga-Based Wigner-Hough Transform System For Detection And Parameter Extraction Of Lpi Radar Lfmcw Signals
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Autor/in / Beteiligte Person: | Gulum, Taylan O. ; Guner, Kani K. ; Erkmen, Burcu |
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Veröffentlichung: | Aperta, 2021 |
Medientyp: | unknown |
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