One-bit target detection in collocated MIMO radar with colored background noise Articles uri icon

publication date

  • November 2024

start page

  • 5274

end page

  • 5290

volume

  • 72

International Standard Serial Number (ISSN)

  • 1053-587X

Electronic International Standard Serial Number (EISSN)

  • 1941-0476

abstract

  • One-bit sampling has emerged as a promising technique in multiple-input multiple-output (MIMO) radar systems due to its ability to significantly reduce data volume, hardware complexity, and power consumption. Nevertheless, current detection methods have not adequately addressed the impact of colored noise, which is frequently encountered in real scenarios. In this paper, we present a novel detection method that accounts for colored noise in MIMO radar systems. Specifically, we derive Rao's test by computing the derivative of the likelihood function with respect to the target reflectivity parameter and the Fisher information matrix, resulting in a detector that takes the form of a weighted matched filter. To ensure constant false alarm rate (CFAR), we also consider noise covariance uncertainty and examine its effect on the probability of false alarm. The detection probability is also studied analytically. Simulation results demonstrate that the proposed detector provides considerable performance gains in the presence of colored noise.

subjects

  • Telecommunications

keywords

  • one-bit analog-to-digital converter (adc); multiple-input multiple-output (mimo) radar; rao's test; target detection.