Title :
A study on separation of two close DOAs by using wide-band signals
Author :
Nishimura, Toshihiko ; Ogawa, Ysutaka ; Ohgane, Takeo
Author_Institution :
Hokkaido Univ., Sapporo, Japan
Abstract :
The method of separating two or more wideband signals that arrive from close angles is proposed. Its high-resolution capability of direction of arrival estimation is based on extracting narrowband components from the wideband signals in the frequency domain. Then, the resolution is stepwise improved by changing the target frequency band upward. By this process, we can avoid the effect of grating lobes. It was shown to be able to separate the signals that arrive from close angles by repeating the above routine even though the electric power spectrum density is low.
Keywords :
direction-of-arrival estimation; frequency-domain analysis; source separation; DOA estimation; direction-of-arrival estimation; electric power spectrum density; frequency-domain analysis; grating lobes; wide-band signal separation; Direction of arrival estimation; Frequency domain analysis; Gratings; Hybrid electric vehicles; Intelligent transportation systems; Multiple signal classification; Narrowband; Signal processing; Signal resolution; Wideband;
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2009. ISPACS 2009. International Symposium on
Conference_Location :
Kanazawa
Print_ISBN :
978-1-4244-5015-2
Electronic_ISBN :
978-1-4244-5016-9
DOI :
10.1109/ISPACS.2009.5383858
