One-bit quantified phase-based algorithm for three-dimensional localization of wideband near-field source via uniform circular array

• Published in: Journal of applied remote sensing Vol. 16; no. 2; p. 024521
• Main Authors: Hu, Panhe, Chen, Xin, Su, Xiaolong, Shi, Junpeng, Liu, Zhen
• Format: Journal Article
• Language: English
• Published: Society of Photo-Optical Instrumentation Engineers 01.04.2022
• Subjects: phase-based algorithm; phase ambiguity; one-bit quantization; three-dimensional source localization; uniform circular array
• ISSN: 1931-3195; 1931-3195
• DOI: 10.1117/1.JRS.16.024521

We present a one-bit quantified phase-based algorithm combined with the noiseless correlation transformation (PANCT) to estimate the three-dimensional (3D) parameters (i.e., azimuth angle, elevation angle, and range) of wideband near-field source via uniform circular array. We first propose a noiseless correlation transformation scheme without direction of arrival pre-estimation to obtain the correlation matrix of focusing frequency bin. Then, we exploit the phase differences to construct indefinite matrix and implement the least-square method to derive 3D parameters. Considering that the complexity scenarios include phase ambiguity and one-bit quantization, we further propose the corresponding unambiguous PANCT algorithm and one-bit quantified PANCT algorithm, respectively. Simulation results demonstrate that the proposed algorithms provide satisfactory estimation performance with low computational complexity.