TY - GEN
T1 - Robust Acoustic TOA Estimation based on Multipath Extraction in Frequency Domain
AU - Jia, Naizheng
AU - Cui, Weimeng
AU - Wang, Yuwei
AU - Xue, Can
AU - Liu, Guangyao
AU - Wang, Xinheng
AU - Cao, Zuyang
AU - Wang, Zhi
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - High-accuracy Time of Arrival (TOA) estimation is a crucial requirement for indoor acoustic localization. However, conventional approaches to TOA estimation based on Generalized Cross Correlation (GCC) suffer from insufficient resolution in severe multipath environments, which hinders their ability to achieve robust ranging. In this paper, we propose a novel and robust acoustic TOA estimation method based on Frequency Modulated Continuous Wave (FMCW) that selects the first-path signal. Our method transforms multipath signals into the frequency domain using several novel signal processing techniques of FMCW, which enhances the resolution of multipath identification and makes the estimation more stable. Simulation and experimental results show that, compared to other methods, our method can achieve centimeter-level TOA ranging estimation over a distance range of 16 m. Furthermore, our proposed method can enhance the accuracy of TOA estimation-based ranging by approximately 4.2 cm in non-line-of-sight (NLOS) scenarios.
AB - High-accuracy Time of Arrival (TOA) estimation is a crucial requirement for indoor acoustic localization. However, conventional approaches to TOA estimation based on Generalized Cross Correlation (GCC) suffer from insufficient resolution in severe multipath environments, which hinders their ability to achieve robust ranging. In this paper, we propose a novel and robust acoustic TOA estimation method based on Frequency Modulated Continuous Wave (FMCW) that selects the first-path signal. Our method transforms multipath signals into the frequency domain using several novel signal processing techniques of FMCW, which enhances the resolution of multipath identification and makes the estimation more stable. Simulation and experimental results show that, compared to other methods, our method can achieve centimeter-level TOA ranging estimation over a distance range of 16 m. Furthermore, our proposed method can enhance the accuracy of TOA estimation-based ranging by approximately 4.2 cm in non-line-of-sight (NLOS) scenarios.
KW - Acoustic ranging
KW - FMCW
KW - PHAT-GCC
KW - TOA estimation
KW - multipath
UR - http://www.scopus.com/inward/record.url?scp=85180806467&partnerID=8YFLogxK
U2 - 10.1109/IPIN57070.2023.10332467
DO - 10.1109/IPIN57070.2023.10332467
M3 - Conference Proceeding
AN - SCOPUS:85180806467
T3 - Proceedings of the 2023 13th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2023
BT - Proceedings of the 2023 13th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th International Conference on Indoor Positioning and Indoor Navigation, IPIN 2023
Y2 - 25 September 2023 through 28 September 2023
ER -