TY - GEN
T1 - Detection and estimation of moving targets based on fractional Fourier transform
AU - Ran, Tao
AU - Xianjun, Ping
AU - Xinghao, Zhao
AU - Yue, Wang
N1 - Publisher Copyright:
© 2002 IEEE.
PY - 2002
Y1 - 2002
N2 - The key part of Classical MTD is the filter bank based on FFT. Generally, a moving target moves in the way of segment constant acceleration. Thus, its echo can be approximately regarded as a chirp signal, which is typical nonstalionary signals. Traditional Fourier transform cannot handle chirp signals. Therefore, time frequency analysis is a more appropriate method than FFT in such application. Furthermore, WVD have the best time frequency centralization performance among all the time frequency distributions, instead of FFT , we can employed WVD to analyze the echo of moving targets. WVD for multiple chirp signals, however, produces inevitably some cross terms, which lead to the appearance of false targets. An Method of radar moving target detection and estimation based on Fractional Fourier Transform is proposed in this paper. Compared with the MTD based on WVD, the MTD based on FRFT need not consider the cross-term interference in the case of multi moving targets, therefore reduces computation burden, simplifies the processing procedure and improves the performance of detection. The experiment results verify validity of the method.
AB - The key part of Classical MTD is the filter bank based on FFT. Generally, a moving target moves in the way of segment constant acceleration. Thus, its echo can be approximately regarded as a chirp signal, which is typical nonstalionary signals. Traditional Fourier transform cannot handle chirp signals. Therefore, time frequency analysis is a more appropriate method than FFT in such application. Furthermore, WVD have the best time frequency centralization performance among all the time frequency distributions, instead of FFT , we can employed WVD to analyze the echo of moving targets. WVD for multiple chirp signals, however, produces inevitably some cross terms, which lead to the appearance of false targets. An Method of radar moving target detection and estimation based on Fractional Fourier Transform is proposed in this paper. Compared with the MTD based on WVD, the MTD based on FRFT need not consider the cross-term interference in the case of multi moving targets, therefore reduces computation burden, simplifies the processing procedure and improves the performance of detection. The experiment results verify validity of the method.
KW - Fractional Fourier transform
KW - Moving target detection
KW - Parameters estimation
KW - Time-frequency analysis
UR - http://www.scopus.com/inward/record.url?scp=32644436884&partnerID=8YFLogxK
U2 - 10.1109/ICOSP.2002.1180995
DO - 10.1109/ICOSP.2002.1180995
M3 - Conference contribution
AN - SCOPUS:32644436884
T3 - International Conference on Signal Processing Proceedings, ICSP
SP - 102
EP - 105
BT - ICSP 2002 - 2002 6th International Conference on Signal Processing, Proceedings
A2 - Yuan, Baozong
A2 - Tang, Xiaofang
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th International Conference on Signal Processing, ICSP 2002
Y2 - 26 August 2002 through 30 August 2002
ER -