TY - GEN
T1 - Time Delay Estimation for USBL Using SVMD and Generalized Quadratic Cross Correlation
AU - Li, Mingxu
AU - Xu, Lijun
N1 - Publisher Copyright:
© 2026 IEEE.
PY - 2026
Y1 - 2026
N2 - Conventional generalized cross-correlation (GCC) methods often yield poor time delay estimates in USBL positioning, especially under low SNR conditions. To address this issue, this paper presents a time delay estimation framework based on SVMD and generalized quadratic cross-correlation (GQCC). The received signal is preprocessed via SVMD-based decomposition, component selection, and reconstruction to enhance the effective signal content. Time delay is then obtained using a GQCC estimator equipped with an improved weighting function. Simulation results demonstrate that the proposed approach consistently outperforms both GCC and traditional GQCC, leading to notably improved USBL positioning accuracy.
AB - Conventional generalized cross-correlation (GCC) methods often yield poor time delay estimates in USBL positioning, especially under low SNR conditions. To address this issue, this paper presents a time delay estimation framework based on SVMD and generalized quadratic cross-correlation (GQCC). The received signal is preprocessed via SVMD-based decomposition, component selection, and reconstruction to enhance the effective signal content. Time delay is then obtained using a GQCC estimator equipped with an improved weighting function. Simulation results demonstrate that the proposed approach consistently outperforms both GCC and traditional GQCC, leading to notably improved USBL positioning accuracy.
KW - SVMD
KW - generalized quadratic cross correlation
KW - time delay estimation
UR - https://www.scopus.com/pages/publications/105045048948
U2 - 10.1109/EEiSS69782.2026.11584496
DO - 10.1109/EEiSS69782.2026.11584496
M3 - Conference contribution
AN - SCOPUS:105045048948
T3 - EEiSS 2026 - 2026 3rd International Conference on Electronic Engineering and Information Systems
BT - EEiSS 2026 - 2026 3rd International Conference on Electronic Engineering and Information Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd International Conference on Electronic Engineering and Information Systems, EEiSS 2026
Y2 - 24 April 2026 through 26 April 2026
ER -