Gridless Parameter Estimation for One-Bit MIMO Radar with Time-Varying Thresholds

Abstract

We investigate the one-bit MIMO (1b-MIMO) radar that performs one-bit sampling with a time-varying threshold in the temporal domain and employs compressive sensing in the spatial and Doppler domains. The goals are to significantly reduce the hardware cost, energy consumption, and amount of stored data. The joint angle and Doppler frequency estimations from noisy one-bit data are studied. By showing that the effect of noise on one-bit sampling is equivalent to that of sparse impulsive perturbations, we formulate the one-bit ${\ell }_1$-regularized atomic-norm minimization (1b-ANM-L1) problem to achieve gridless parameter estimation with high accuracy. We also develop an iterative method for solving the 1b-ANM-L1 problem via the alternating direction method of multipliers. The Cram$\acute{\text{e}}$r-Rao bound (CRB) of the 1b-MIMO radar is analyzed, and the analytical performance of one-bit sampling with two different threshold strategies is discussed. Numerical experiments are presented to show that the 1b-MIMO radar can achieve high-resolution parameter estimation with a largely reduced amount of data.

arXiv comment31 pages, 12 figures

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• One-Bit Phase Retrieval: More Samples Means Less Complexity?
• BiLiMO: Bit-Limited MIMO Radar via Task-Based Quantization
• Direction Finding of Electromagnetic Sources on a Sparse Cross-Dipole Array Using One-Bit Measurements