Title :
Resolution of coherent sources using an arc array
Author :
Ren, Dejian ; Zhu, Weiqing
Author_Institution :
Inst. of Acoust., Acad. Sinica, Beijing, China
Abstract :
A method for using an arc array to resolve coherent sources is presented. A narrowband plane wave received by sensors of an arc array is analyzed. By introducing a sensor-dependent delay to each sensor, the arc array problem is approximately mapped to an equispaced linear array under certain constraints. Combining this with an existing eigen-assisted algorithm for high-resolution array processing, a method for arc array resolution of coherent sources is proposed. The algorithm needs no spatial smoothing and hence no reduction of array aperture is introduced. Computer simulation results are presented to show the performance of the method
Keywords :
acoustic arrays; acoustic signal processing; computerised signal processing; delays; digital simulation; estimation theory; acoustic signal processing; arc array; coherent sources; digital simulation; eigen-assisted algorithm; equispaced linear array; estimation theory; high-resolution array processing; narrowband plane wave; sensor-dependent delay; Acoustic sensors; Apertures; Array signal processing; Computer simulation; Degradation; Delay; Frequency; Narrowband; Sensor arrays; Signal resolution; Smoothing methods; Spatial resolution;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116207
