Please use this identifier to cite or link to this item:
Title: Resolution of coherent sources by using a fast phase shifting based null steering algorithm
Authors: Ko, C.C. 
Keywords: adaptive algorithms
adaptive arrays
Array processing
Issue Date: Oct-1991
Citation: Ko, C.C. (1991-10). Resolution of coherent sources by using a fast phase shifting based null steering algorithm. Signal Processing 25 (1) : 11-22. ScholarBank@NUS Repository.
Abstract: This paper proposes and investigates a fast phase shifting based null steering algorithm which requires only the theoretical minimum of M + 1 (equal to or just larger than 3 2S) array elements for resolving S coherent sources. With this algorithm, the M + 1 array elements are grouped together to form M - S + 1 identical but spatially shifted power inversion sub-arrays, each having S + 1 elements and with response zeros given by phase shifts on the unit circle so that perfect nulls are formed at S directions. By performing some simple signal preprocessing and adjusting these phase shift values one after another in a time-multiplexed manner to minimize the average output power from all the sub-arrays, the external sources can be rapidly tracked and resolved without using any root-finding routine. Futhermore, with only one parameter being adjusted at any instant, the new algorithm is 4 times less complex to implement than when the LMS algorithm is used directly. © 1991.
Source Title: Signal Processing
ISSN: 01651684
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Mar 29, 2020

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.