High-Speed Moving Target Parameter Estimation for One-Bit MIMO PMCW Automotive Radar

We consider estimating the parameters of high-speed moving targets using multiple-input multiple-output (MI-MO) phase-modulated continuous-wave (PMCW) automotive radar equipped with one-bit analog-to-digital converters (ADCs) at the receivers. Conventional automotive radar signal processing normally neglects target Doppler shifts within a pulse repetition interval (PRI). However, for fast-moving targets, the intra-pulse Doppler shifts can no longer be ignored since they can generate significant Doppler migrations over fast-time samples and degrade the orthogonality of the waveforms from different transmitters. To address this problem, this paper analyzes the effect of intra-pulse Doppler shifts on the radar imaging quality and proposes a novel high-speed moving target parameter estimation method for one-bit MIMO PMCW radar. The effectiveness of the proposed algorithm is demonstrated using numerical examples.