TY - JOUR
T1 - Analysis of moving source characteristics using polynomial chirplet transform
AU - Xu, Lingji
AU - Yang, Yixin
AU - Yu, Shiduo
N1 - Publisher Copyright:
© 2015 Acoustical Society of America.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - The received Doppler signal of a stationary sensor, as emitted by a transiting acoustic source, is used to estimate source motion parameters, including speed, closest distance, rest frequency, and closest point of approach (CPA) time. First, the instantaneous frequency, amplitude, and CPA time are accurately estimated by the polynomial chirplet transform of the Doppler signal. Thereafter, the three other source motion parameters are obtained with a simplified amplitude-weighted nonlinear least squares method. The proposed scheme is successfully applied to the analysis of the characteristics of a moving truck.
AB - The received Doppler signal of a stationary sensor, as emitted by a transiting acoustic source, is used to estimate source motion parameters, including speed, closest distance, rest frequency, and closest point of approach (CPA) time. First, the instantaneous frequency, amplitude, and CPA time are accurately estimated by the polynomial chirplet transform of the Doppler signal. Thereafter, the three other source motion parameters are obtained with a simplified amplitude-weighted nonlinear least squares method. The proposed scheme is successfully applied to the analysis of the characteristics of a moving truck.
UR - http://www.scopus.com/inward/record.url?scp=84926616913&partnerID=8YFLogxK
U2 - 10.1121/1.4916796
DO - 10.1121/1.4916796
M3 - 文章
AN - SCOPUS:84926616913
SN - 0001-4966
VL - 137
SP - EL320-EL326
JO - Journal of the Acoustical Society of America
JF - Journal of the Acoustical Society of America
IS - 4
ER -