TY - JOUR
T1 - The fractional fourier analysis of multicomponent chirp signals with unknown parameters
AU - Dong, Yongqiang
AU - Tao, Ran
AU - Zhou, Siyong
AU - Wang, Yue
PY - 1999
Y1 - 1999
N2 - Aim To propose a new approach to the detection and estimation for multicomponent chirp signals with unknown parameter using the fractional Fourier transform (FRFT). Methods The new method was investigated and simulated, based on the property of Chirp basis decomposition of FRFT and its relationship with the Wigner-Ville distribution(WVD). Results and Conclusion Compared with the WVD-HT method, the new FRFT based approach need not consider the cross-term interference in the case of multicomponent signals, therefore the WVD interpolation from the cartesian coordinates to the polar coordinates and the two dimensional sweeping procedure of the Hough transform can be omitted.
AB - Aim To propose a new approach to the detection and estimation for multicomponent chirp signals with unknown parameter using the fractional Fourier transform (FRFT). Methods The new method was investigated and simulated, based on the property of Chirp basis decomposition of FRFT and its relationship with the Wigner-Ville distribution(WVD). Results and Conclusion Compared with the WVD-HT method, the new FRFT based approach need not consider the cross-term interference in the case of multicomponent signals, therefore the WVD interpolation from the cartesian coordinates to the polar coordinates and the two dimensional sweeping procedure of the Hough transform can be omitted.
KW - Fractional Fourier transform
KW - Parameter estimation
KW - Time frequency analysis
UR - http://www.scopus.com/inward/record.url?scp=33646737717&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:33646737717
SN - 1001-0645
VL - 19
SP - 612
EP - 616
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 5
ER -