Mixed Pulse Accumulation for Compressive Sensing Radar

This letter proposes a novel pulse accumulation scheme via structured measurement matrix in compressive sensing radar for better detection performance in the presence of high-level additive noise. The measurement matrix allows radar accumulate pulses with both coherent and noncoherent accumulation. The range migration can be accurately compensated via time delay compensation matrix based on frequency domain weighting. A modified algorithm is derived to recover the structured joint sparse vectors. By implementing numerical simulations, it is demonstrated that better detection performance and more accuracy can be achieved through the proposed scheme.