Open AccessParameter estimation of coexisted circular and strictly non‐circular signals
Author(s) -
Yue Yaxing,
Xu Yougen,
Shen Lei,
Liu Zhiwen
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2017.0730
Subject(s) - mathematics , estimation theory , control theory (sociology) , mathematical analysis , computer science , statistics , artificial intelligence , control (management)
New direction‐of‐arrival (DOA) and non‐circular phase estimation algorithms for a mixture of circular and non‐circular signals, which are applicable to arbitrary planar arrays are presented. For simplicity, the non‐circular signals referred to are assumed to be strictly non‐circular. First, the DOAs of circular and non‐circular signals are estimated based on two polynomial formulae. Then the estimated DOAs of circular signals can be used to estimate the DOAs of non‐circular signals more precisely. Furthermore, the non‐circular phases can be calculated by the estimated DOAs of non‐circular signals. Simulation results show that the proposed algorithms outperform the compared algorithm.