Progress in Near-field Source Localization via Uniform Circular Array br

Near-field source localization plays an important role in the radar, sonar and communications. Thenear-field source localization methods and the resolving ambiguity methods via uniform circular array aresystematically introduced in this paper. On this basis, the fast and accurate algorithms for three-dimensionalposition parameter (azimuth angle, elevation angle and range) estimation of near-field Linear FrequencyModulated (LFM) signal are further introduced from time domain, frequency domain, and fractional Fourierdomain. Finally, the following research ideas are proposed from the aspects of coherent source and mixed sourcelocalization.