On Two-Stage Schemes for Beamspace Direction-of-Arrival Estimation
1992 (English)Report (Other academic)
This paper addresses performance analysis of two-stage methods for direction-of-arrival (DOA) estimation. By first finding crude initial DOA-estimates, the idea is to use these estimates for designing a transformation matrix as the first step. Then this matrix is employed for mapping the data to the lower-dimensional beamspace. Different ways for obtaining the first-stage DOA-estimates are discussed and various trade-offs that have to be considered are pointed out. The beamspace version of the Weighted Subspace Fitting (WSF) method is used for obtaining the final DOA estimates. An approximate performance bound is stated that assumes the first-stage DOA-estimates to be close to the true DOAs. For comparing the performance of some different ways to obtain the first-stage DOA-estimate, some numerical examples are included.
Place, publisher, year, edition, pages
Linköping: Linköping University , 1992. , 20 p.
LiTH-ISY-I, ISSN 8765-4321 ; 1385
Direction-of-arrival, Estimation, Transformation matrix, Weighted subspace fitting, WSF, Approximation, Performance
IdentifiersURN: urn:nbn:se:liu:diva-55222OAI: oai:DiVA.org:liu-55222DiVA: diva2:315930