Title :
Spatial evolutionary spectrum and beamspace MUSIC for high-speed DOA estimation
Author :
Wang, Ling ; Chen, Tianqi
Author_Institution :
Coll. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
We combine the concepts of evolutionary spectrum and array processing and set a high-speed method to estimate the direction-of-arrival (DOA) of nonstationary signals using the theories of cross-power evolutionary periodogram (CEP) and beamforming. The proposed method implements three-step DOA estimation. First, we estimate the cross-power evolutionary of the sensor array using the minimized mean-squared error. Second, we estimate the DOA roughly using the beamspace MUSIC method. Lastly, we accurately estimate the DOA with the result of the coarse estimation.
Keywords :
array signal processing; direction-of-arrival estimation; least mean squares methods; signal classification; spectral analysis; DOA estimation; array processing; beamforming; beamspace MUSIC; cross-power evolutionary periodogram; direction-of-arrival estimation; minimum mean-squared error; nonstationary signals; spatial evolutionary spectrum; Array signal processing; Covariance matrix; Direction of arrival estimation; Fourier transforms; Frequency estimation; Multiple signal classification; Radar signal processing; Sensor arrays; Signal processing; Time frequency analysis;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346324
