A Stochastic CRB for Non-unitary Beam-space Transformations and its Application to Optimal Steering Angle Design

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Many of modern radar systems employ antenna arrays with thousands of anetnnas. These antennas are usually grouped into a few subarrays or beams through the process of beamspace transformation, to estimate the angle of a target. In this letter, we consider a simple but pragmatic beamspace transformation that only allows beam steering, and present a technique of finding optimal steering angles that minimize the Cramer-Rao bound (CRB) for angle estimation. The CRB and mean squared error (MSE) of the angle estimate using the resulting optimal steering angles are compared with those using the widely used DFT-based beam steering.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2015-11
Language
English
Article Type
Article
Citation

IEEE SIGNAL PROCESSING LETTERS, v.22, no.11, pp.2014 - 2018

ISSN
1070-9908
DOI
10.1109/LSP.2015.2453152
URI
http://hdl.handle.net/10203/200582
Appears in Collection
EE-Journal Papers(저널논문)
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