Title :
On the sensitivity of covariance based direction finding to gain and phase perturbations
Author :
Friedlander, Benjamin
Author_Institution :
Dept. of Electr. & Comput. Sci., California Univ., Davis, CA, USA
Abstract :
In recent work the author (1990) studied the sensitivity of two direction finding algorithms (MUSIC and maximum likelihood) to gain and phase errors. Here, he generalizes the analysis to any consistent estimator based on the covariance matrix of the received data. The analysis is deterministic in the sense that the gain/phase perturbations are assumed to be fixed during the data collection interval; also, the exact covariance matrix of the received data is assumed to be known
Keywords :
array signal processing; matrix algebra; maximum likelihood estimation; radio direction-finding; sensitivity analysis; DOA; MUSIC; array response; covariance matrix; data collection interval; direction finding algorithms; gain error; gain perturbations; maximum likelihood algorithm; phase errors; phase perturbations; received data; Covariance matrix; Degradation; Direction of arrival estimation; Maximum likelihood estimation; Multiple signal classification; Performance gain; Phase estimation; Phased arrays; Sensitivity analysis; Sensor arrays;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226340
