A Parallel and Pipelined Architecture for Estimation of Direction of Arrival Using a Bilinear Transformation Method. Volume 3.
TOLEDO UNIV OH DEPT OF ELECTRICAL ENGINEERING
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High resolution direction-of-arrival DOA estimation is important in many sensor systems. It is based on the processing of the received signal and extracting the desired parameters of the DOA of plane waves. The estimation of angle of arrivals of multiple broadband sources has been carried out in a variety of ways over the past few years. In this research an algorithm for broadband DOA estimation using a simple bilinear transformation matrix is investigated and a parallel and pipelined architecture is developed. When compared to other coherent approaches, this algorithm has the advantages of being non-iterative and does not require any initial estimates of the angles of arrival and all angles are computed from a single step of coherent subspace calculations. Hence it is a very suitable algorithm for computation of DOA using dedicated hardware. The advances in the area of Very Large Scale Integration VLSI have made it possible to design special purpose hardware which has the advantage of very high speed and overall lower system cost when compared to a system which runs off a general purpose computer.
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