Acta Geodaetica et Cartographica Sinica ›› 2025, Vol. 54 ›› Issue (10): 1841-1851.doi: 10.11947/j.AGCS.2025.20240469

• Marine Survey • Previous Articles     Next Articles

Underwater terrain matching method based on robust particle filter

Gen LI1(), Hongzhou CHAI1(), Kaidi JIN2, Zhao ZHAN1   

  1. 1.Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450001, China
    2.Institute of War Studies, Academy of Military Science, Beijing 100091, China
  • Received:2024-11-19 Revised:2025-09-05 Online:2025-11-14 Published:2025-11-14
  • Contact: Hongzhou CHAI E-mail:a1145216790@163.com;chaihz1969@163.com
  • About author:LI Gen (2002—), male, PhD candidate, majors in UUV autonomous navigation. E-mail: a1145216790@163.com
  • Supported by:
    The National Natural Science Foundation of China(42404010);The National Key Laboratory of Intelligent Spatial Information(SYS-ZX01-2024-01)

Abstract:

Terrain-aided navigation (TAN) systems are capable of correcting the position errors of unmanned underwater vehicle (UUV), enabling absolute positioning underwater. This paper addresses the issue that single-beam sounding values are susceptible to gross errors, which can degrade the positioning accuracy of TAN systems based on particle filters (PF). To address this, a robust particle filter-based underwater terrain-matching localization method is proposed. By analyzing the mechanism by which gross errors in sounding affect UUV underwater terrain matching, a robust estimation method is introduced into the PF terrain matching, utilizing the IGG Ⅲ function to set robust factors that dynamically adjust the contribution of gross error observations to the posterior state parameters. Monte Carlo simulation experiments show that at the end of navigation, compared to the standard PF algorithm, the accuracy and stability of the proposed algorithm are improved by 12.20% and 58.81%, respectively. After introducing the robust factor, the proposed algorithm demonstrated better accuracy and robustness when facing different types of gross errors.

Key words: unmanned underwater vehicle, strapdown inertial navigation system, terrain-aided navigation, particle filter, robust estimation

CLC Number: