Array shape calibration using eigenstructure methods

Abstract Sensor location uncertainty can severely degrade the accuracy of direction finding system. An eigenstructure based method for simultaneously estimating directions of arrival (DOA) and sensor locations is developed to alleviate this problem. The proposed technique does not require calibration sources at known positions, and can handle non-disjoint sources, (i.e., sources occupying the same frequency band and the same time interval). The procedure is guaranteed to converge and offers an alternative to the procedure presented by Weiss and Friedlander (1990). Numerical examples and Monte-Carlo simulations are used to study the performance of the proposed technique.