作者: Jinlong Xin , Guisheng Liao , Zhiwei Yang , Haoming Shen
DOI: 10.3390/S18082650
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摘要: This paper proposes two novel phase-based algorithms for the passive localization of a single source with uniform circular array (UCA) under case measuring phase ambiguity based on difference observation models, which are defined as unambiguous-relative model (UARPOM) and ambiguous-relative (ARPOM). First, by analyzing varying regularity differences between adjacent elements UCA, corresponding relationship azimuth elevation angle signal is derived. Based algorithms, namely, integral accumulation randomized Hough transform (RHT), addressed to resolve ambiguity. Then, using unambiguous differences, closed-form estimates angles determined via least squares (LS) algorithm. Compared existing methods, proposed improve estimation accuracy. Furthermore, our more flexible selection an radius. Such advantage could be applied broadly in practice than previous methods resolution. Simulation results presented verify effectiveness