TY - GEN
T1 - Time-frequency DOA estimate algorithm based on SPWVD
AU - Hu, Hang
PY - 2005
Y1 - 2005
N2 - In studies on DOA estimate based on time-frequency analysis, for the case of multi-signal sources, eliminating cross interference terms is an important problem. It is the key to improve DOA estimate performance. WVD is the most commonly used time-frequency analysis tool, but it has a very big bug that it will generate cross interference terms in case of multi-signal sources. So PWVD is used to suppress cross terms in many cases. However, the effect of PWVD suppressing cross terms doesn't be so ideal and the estimated results are not so reliable. This paper employ SPWVD which effectively suppress cross terms by using smoothing for two times in both time domain and frequency domain, consequently it improves the accuracy of DOA estimate much more greatly. Simulation results demonstrate in the background of multi sources the performance of DOA estimate algorithm based on SPWVD improves compared with that based on PWVD.
AB - In studies on DOA estimate based on time-frequency analysis, for the case of multi-signal sources, eliminating cross interference terms is an important problem. It is the key to improve DOA estimate performance. WVD is the most commonly used time-frequency analysis tool, but it has a very big bug that it will generate cross interference terms in case of multi-signal sources. So PWVD is used to suppress cross terms in many cases. However, the effect of PWVD suppressing cross terms doesn't be so ideal and the estimated results are not so reliable. This paper employ SPWVD which effectively suppress cross terms by using smoothing for two times in both time domain and frequency domain, consequently it improves the accuracy of DOA estimate much more greatly. Simulation results demonstrate in the background of multi sources the performance of DOA estimate algorithm based on SPWVD improves compared with that based on PWVD.
KW - Cross term suppression
KW - DOA estimate
KW - SPWVD
KW - Time-frequency analysis
UR - https://www.scopus.com/pages/publications/33847329669
M3 - 会议稿件
AN - SCOPUS:33847329669
SN - 0780391284
SN - 9780780391284
T3 - MAPE2005: IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, Proceedings
SP - 1253
EP - 1256
BT - MAPE2005
T2 - MAPE2005: IEEE 2005 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications
Y2 - 8 August 2005 through 12 August 2005
ER -