TY - GEN
T1 - Time delay estimation using Scatter Search algorithm for underwater acoustic channel
AU - Zhang, Chan
AU - Lei, Zhixiong
AU - Yang, Kunde
PY - 2013
Y1 - 2013
N2 - To overcome the shortcoming of low resolution of the matched filtering method when estimating time delays, the WRELAX algorithm of the Nonlinear Least-Squares (NLS) parameters estimation problem is commonly used. However, the computing time of the WRELAX algorithm is long. In this paper, the Scatter Search (SS)-based WRELAX algorithm is applied in underwater acoustical channel computation. Multipath time delay estimation of a CW signal is calculated in Gaussian white noise channel with three SNR conditions of 20dB, 10dB, and 0 dB. Simulation results show that the SS-based WRELAX algorithm reaches a higher resolution than the conventional matched filtering method. Moreover, the SS algorithm can reduce the iteration number a lot comparing with the Gauss-Newton algorithm in the process of searching the minimum objective function value.
AB - To overcome the shortcoming of low resolution of the matched filtering method when estimating time delays, the WRELAX algorithm of the Nonlinear Least-Squares (NLS) parameters estimation problem is commonly used. However, the computing time of the WRELAX algorithm is long. In this paper, the Scatter Search (SS)-based WRELAX algorithm is applied in underwater acoustical channel computation. Multipath time delay estimation of a CW signal is calculated in Gaussian white noise channel with three SNR conditions of 20dB, 10dB, and 0 dB. Simulation results show that the SS-based WRELAX algorithm reaches a higher resolution than the conventional matched filtering method. Moreover, the SS algorithm can reduce the iteration number a lot comparing with the Gauss-Newton algorithm in the process of searching the minimum objective function value.
KW - multipath time delay estimation
KW - Scatter Search algorithm
KW - WRELAX algorithm
UR - http://www.scopus.com/inward/record.url?scp=84894311000&partnerID=8YFLogxK
U2 - 10.1109/TENCON.2013.6718802
DO - 10.1109/TENCON.2013.6718802
M3 - 会议稿件
AN - SCOPUS:84894311000
SN - 9781479928262
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
BT - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013
Y2 - 22 October 2013 through 25 October 2013
ER -