Title :
Comments on "Multiresolution-signal direction-of-arrival estimation based on wavelet decomposition"
Author_Institution :
Key Res. Lab., Wuhan Radar Acad., China
Abstract :
A multi resolution-signal direction-of-arrival (DOA) estimation, based on wavelet decomposition (W. Xu et al., IEEE Trans. SIGPRO Lett., vol.7, p.66-68, 2000) and (B. Wang et al., IEEE AP-S Int. Symp. p.672-675, 2002) is analyzed in detail. In this paper, considering signal leakage and spatial phase ambiguity, we show that this approach is not feasible because implementing the signal DOA estimation on one subband will lead to false estimation when other signals exist outside this subband. Computer simulation results demonstrate our viewpoint.
Keywords :
direction-of-arrival estimation; wavelet transforms; DOA estimation; WD-MDOA; multiresolution-signal direction-of-arrival estimation; signal leakage; spatial phase ambiguity; subband external signal false estimation; wavelet decomposition; Computer simulation; Direction of arrival estimation; Phase estimation; Phased arrays; Radar; Sensor arrays; Signal analysis; Signal resolution; Spatial resolution; Wavelet analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1329669
