TY - GEN
T1 - A fast method for time delay, Doppler shift and doppler rate estimation
AU - Shan, Tao
AU - Tao, Ran
AU - Sun, Rong Rong
PY - 2007
Y1 - 2007
N2 - For realizing the rapid estimation of time delay, Doppler shift and Doppler rate of moving targets in passive radar, we present a cross ambiguity function algorithm based on higher order ambiguity function (CAF-HAF). In this algorithm, higher order ambiguity function transforms the nonlinear harmonious signal's estimation to the linear harmonious signal's estimation, then zoom-FFT is used for estimating the frequency portion which the authors are interested about. Therefore, the CAF-HAF algorithm realizes the accurate estimation of the time delay, Doppler shift and Doppler rate of moving target with less computational cost. Then the computation cost and the accuracy of the CAF-HAF algorithm are compared with the cross ambiguity function method based on the fractional Fourier transform (CAF-FRFT), showing higher efficiency and being more adaptive for real time signal processing.
AB - For realizing the rapid estimation of time delay, Doppler shift and Doppler rate of moving targets in passive radar, we present a cross ambiguity function algorithm based on higher order ambiguity function (CAF-HAF). In this algorithm, higher order ambiguity function transforms the nonlinear harmonious signal's estimation to the linear harmonious signal's estimation, then zoom-FFT is used for estimating the frequency portion which the authors are interested about. Therefore, the CAF-HAF algorithm realizes the accurate estimation of the time delay, Doppler shift and Doppler rate of moving target with less computational cost. Then the computation cost and the accuracy of the CAF-HAF algorithm are compared with the cross ambiguity function method based on the fractional Fourier transform (CAF-FRFT), showing higher efficiency and being more adaptive for real time signal processing.
KW - Ambiguity function
KW - Cross ambiguity function
KW - Doppler
KW - Doppler rate
KW - Fractional fourier transform
UR - http://www.scopus.com/inward/record.url?scp=34547699349&partnerID=8YFLogxK
U2 - 10.1109/ICR.2006.343509
DO - 10.1109/ICR.2006.343509
M3 - Conference contribution
AN - SCOPUS:34547699349
SN - 0780395824
SN - 9780780395824
T3 - CIE International Conference of Radar Proceedings
BT - 2006 CIE International Conference on Radar, ICR 2006
T2 - 2006 CIE International Conference on Radar, ICR 2006
Y2 - 16 October 2006 through 19 October 2006
ER -