TY - GEN
T1 - Time-frequency DOA estimation based on Radon-Wigner transform
AU - Hang, Hu
PY - 2006
Y1 - 2006
N2 - In the studies of DOA estimation based on time-frequency analysis, eliminating cross interference terms is the key to improve DOA estimation performance for the multi-signal sources situation. PWVD is the most commonly used time-frequency analysis tool for suppressing cross interference terms in WVD. However, the cross terms improvement of PWVD is not so ideal and the estimated results are not so reliable, SPWVD can suppress cross terms better, but the time-frequency concentration performance of signal drops largely. This paper employs RWT (Radon-Wigner Transform) as time-frequency transform tool which is very suitable to describe LFM signals. This method can suppress cross terms in the background of multi sources effectively, possess good time-frequency concentration performance, and consequently it can improve the accuracy of DOA estimation much more greatly. Simulation results demonstrate that the performances of DOA estimation based on RWT are notably improved compared with those ones based on PWVD and SPWVD.
AB - In the studies of DOA estimation based on time-frequency analysis, eliminating cross interference terms is the key to improve DOA estimation performance for the multi-signal sources situation. PWVD is the most commonly used time-frequency analysis tool for suppressing cross interference terms in WVD. However, the cross terms improvement of PWVD is not so ideal and the estimated results are not so reliable, SPWVD can suppress cross terms better, but the time-frequency concentration performance of signal drops largely. This paper employs RWT (Radon-Wigner Transform) as time-frequency transform tool which is very suitable to describe LFM signals. This method can suppress cross terms in the background of multi sources effectively, possess good time-frequency concentration performance, and consequently it can improve the accuracy of DOA estimation much more greatly. Simulation results demonstrate that the performances of DOA estimation based on RWT are notably improved compared with those ones based on PWVD and SPWVD.
KW - Cross terms suppression
KW - DOA estimation
KW - Radon-Wigner transform
KW - Time-frequency analysis
UR - https://www.scopus.com/pages/publications/34249288343
U2 - 10.1109/ICOSP.2006.344553
DO - 10.1109/ICOSP.2006.344553
M3 - 会议稿件
AN - SCOPUS:34249288343
SN - 0780397371
SN - 9780780397378
T3 - International Conference on Signal Processing Proceedings, ICSP
BT - 8th International Conference on Signal Processing, ICSP 2006
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Conference on Signal Processing, ICSP 2006
Y2 - 16 November 2006 through 20 November 2006
ER -