Optimization of element positions for direction finding with sparse arrays
Kapitel i bok, 2007
Sparse arrays are attractive for direction-Of-Arrival (DOA) estimation since they can provideaccurate estimates at a low cost. A problem of great interest in this matter is to determinethe element positions that yield the best DOA estimation performance. A major difficulty with this problem is to define a suitable performance measure to optimize. In this paper, a novel criterion is proposed for optimizing element positions. The ambiguity threshold of the Weiss-Weinstein Bound (WWB) is used to optimize the element positionsof a sparse linear array. The array obtainedfrom the optimization is compared withsome other sparse arraystructuresthat have been proposed in the literature.
Signal to noise ratio
Direction of arrival estimation
Array signal processing
Finite element methods