A Hardware Prototype of Sub-Nyquist Radar with Distorted Pulse Shape

Sub-Nyquist radar systems operate at lower sampling rates compared to the Nyquist rate and hence reduce the hardware cost and complexity. Sub-Nyquist systems uses the knowledge of the transmit pulse and the receive signal model to estimate the targets from lowrate samples. However, in practice, the pulse shape is often distorted and unknown at the receiver. Recently, a multiple-receiver based sub-Nyquist radar was proposed that estimates the targets without knowledge of the pulse shape. In this demo, we build a hardware prototype to demonstrate the proposed sub-Nyquist radar. We show that while operating at 10 times below the Nyquist rate the proposed two-receiver system with unknown pulse has comparable performance to a single-receiver sub-Nyquist system with a known pulse.