Radar Pulse Compression with Optimized Weighting Window for SAR Receivers

Abstract This paper proposes a novel design of software-defined matched filter (MF) for digital receivers synthetic aperture radar (SAR). The block diagram the proposed receiver is described in detail. purpose this to produce SAR pulse with higher compression ratio (CR) and lower side lobe level (SLL) than that produced by conventional MF. based on idea time windowing construct transfer function filter. shape time-domain window optimized achieve goals including minimization SLL realization target value CR. transmitted is, first, subjected linear frequency modulation then window. width (time duration) divided into equal intervals. constructed as sequential continuous piecewise segments. instantaneous at start each interval so optimization goals. shown be proportional compressed after optimization. number intervals which duration have significant effect results. particle swarm (PSO) technique applied get minimizes specific predetermined It iterations PSO are fastly convergent algorithm computationally efficient. Also, it desired CR achieved accuracy 100%. Moreover, SLLs about ? $$65\,\mathrm{dB}$$ 65 dB , $$- 90\,\mathrm{dB}$$ - 90 114\,\mathrm{dB}$$ 114 133\,\mathrm{dB}$$ 133 5, 3, 2, 1.5, respectively. Finally, practical implementation introduced processing technique, placed building system.