Paper Info
Title
d-MUSIC, a real time algorithm for estimating the DOA of coherent sources using a single array snapshot.
Abstract
d-MUSIC estimates the DOA of two closely spaced sources using a single array snapshot. To overcome the coherent signal problem d-MUSIC utilizes additional information, specifically the derivative of an array snapshot. The combined vector set produces a full rank signal space projector. The algorithm nearly attains the Cramer-Rao bound for typical air traffic control problems. As it does not require a subspace decomposition (e.g., eigenstructure) and all operations are highly vectorized it can be readily implemented in real-time. The algorithm is tested using vertical linear array data with a low flying helicopter. With a spacing of 16% to 35% of a beamwidth between the direct and surface reflected rays, the d-MUSIC RMS error is 9.6% of a beamwidth for the 4 data collections while MUSIC resolved the two rays for 2 of the 4 cases with a RMS error of 18.1%.
Year
DOI
Venue
1999
10.1109/ICASSP.1999.761364
ICASSP
Keywords
Field
DocType
d-music rms error,vertical linear array data,combined vector set,coherent source,single array snapshot,real time algorithm,full rank signal space,additional information,rms error,coherent signal problem d-music,array snapshot,data collection,testing,real time,air traffic control,frequency,clustering algorithms,cramer rao bound
Rank (linear algebra),Computer science,Sensor array,Subspace decomposition,Algorithm,Projector,Root-mean-square deviation,Beamwidth,Snapshot (computer storage)
Conference
ISSN
ISBN
Citations 
1520-6149
0-7803-5041-3
1
PageRank 
References 
Authors
0.39
1
1
Name
Order
Citations
PageRank
R. K. Howell110.39