Title :
Improvement of nulling performance in the presence of random variations in a linear sensor array
Author :
Chang, Byong Kun ; Ahmed, Nasir
Author_Institution :
Nevada Univ., Reno, NV, USA
Abstract :
A method for analyzing and improving the nulling performance in a linear sensor array that is subjected to random variations in array weights and sensor positions is presented. In weight vector space, the nonorthogonal projection of a steering vector due to the random variations has been successfully adjusted to the nearly orthogonal projection by iterative adjustment of the initial optimum weight vector. As a result, an excellent nulling performance has been achieved. Computer simulation results are also presented
Keywords :
array signal processing; iterative methods; array weights; initial optimum weight vector; iterative adjustment; linear sensor array; nonorthogonal projection; nulling performance; orthogonal projection; random variations; sensor positions; weight vector space; Degradation; Gaussian distribution; Geometry; Manufacturing processes; Narrowband; Performance analysis; Random variables; Sensor arrays; Symmetric matrices; Vectors;
Conference_Titel :
Circuits and Systems, 1991., Proceedings of the 34th Midwest Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-0620-1
DOI :
10.1109/MWSCAS.1991.251947
