Title :
Rank enhancement for eigenstructure based direction finding using arrays with non-uniform element responses
Author_Institution :
Dept. of Electr. & Comput. Eng., Brigham Young Univ., Provo, UT, USA
Abstract :
This paper presents a new spatial smoothing approach for rank enhancement in sensor array direction finding applications. The method works with coherent scene data when non-uniform array element gains would make conventional smoothing ineffective. Sub-array data is pre-weighted before smoothing to regularize the problem, and so that a consistent phase and gain structure is maintained across the sub-arrays
Keywords :
array signal processing; covariance matrices; direction-of-arrival estimation; eigenvalues and eigenfunctions; smoothing methods; coherent scene data; covariance matrix; eigenstructure based direction finding; gain structure; nonuniform array element gains; nonuniform element responses; phase structure; preweighted subarray data; rank enhancement; sensor array direction finding applications; spatial smoothing; Additive noise; Covariance matrix; Layout; Multiple signal classification; Narrowband; Noise level; Phased arrays; Sensor arrays; Signal resolution; Smoothing methods;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.550552
