DVB-T-Based Passive Forward Scatter Radar: Inherent Limitations and Enabling Solutions

This article investigates the target detection capability of a passive forward scatter radar (PFSR) exploiting digital video broadcasting - terrestrial (DVB-T) transmitter as illuminator opportunity. By means theoretical and simulated analyses, it is shown that conventional processing schemes might suffer from significant performance degradation when orthogonal frequency division multiplexing (OFDM) waveforms opportunity compared to other broadcast transmissions (e.g., modulation radio broadcast). Specifically, direct application approaches case DVB-T PFSR demonstrated yield: 1) nonnegligible increase competing background level 2) steeper fading response due intrinsic characteristics exploited opportunity, above all scheme signal spectral characteristics. Therefore, appropriate techniques are proposed avoid these effects which jeopardize capability. The conceived exploits nature employed subband approach for improving both interference cancellation stage signature extraction. benefits illustrated by analyses. resulting against experimental data proves its effectiveness in practical scenarios.