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Target detection is an important problem in multiple-input multiple-output(MIMO) radar. Many existing target detection algorithms were proposed withouttaking into consideration the quantization error caused by analog-to-digitalconverters (ADCs). This paper addresses the problem of target detection forMIMO radar with one-bit ADCs and derives a Rao's test-based detector. Theproposed method has several appealing features: 1) it is a closed-formdetector; 2) it allows us to handle sign measurements straightforwardly; 3)there are closed-form approximations of the detector's distributions, whichallow us to theoretically evaluate its performance. Moreover, the closed-formdistributions allow us to study the performance degradation due to the one-bitADCs, yielding an approximate $2$ dB loss in the low-signal-to-noise-ratio(SNR) regime compared to $\infty$-bit ADCs. Simulation results are included toshowcase the advantage of the proposed detector and validate the accuracy ofthe theoretical results.

One-Bit Target Detection in Collocated MIMO Radar and Performance Degradation Analysis