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Influence of Submarine Wake on Underwater Gravity Gradient Navigation
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Haoqing ZHANG1, Liwei YANG2, *
Journal of Geodesy and Geodynamics | 2025, 45(11) : 1110 - 1114
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Journal of Geodesy and Geodynamics | 2025, 45(11): 1110-1114
Influence of Submarine Wake on Underwater Gravity Gradient Navigation
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Haoqing ZHANG1, Liwei YANG2, *
Affiliations
  • 1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China
  • 2 National Space Science Center, CAS, 1 Nanertiao, Zhongguancun, Beijing 100190, China

    • ZHANG Haoqing, postgraduate, majors in the characteristics of gravity gradient field of underwater target wake, E-mail:

About Author:

ZHANG Haoqing, postgraduate, majors in the characteristics of gravity gradient field of underwater target wake, E-mail:

Published: 2025-11-15 doi: 10.14075/j.jgg.2024.11.515
Outline
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Using potential flow theory, we establish the Bernoulli hump, Kelvin wake, and internal wave models. Through simulation experiments, the impact of hydrodynamic wake produced by submarine on underwater gravity gradient navigation is quantitatively studied. The results show when the speed increases and depth decreases, the wake will generate significant disturbances in gravity gradient measurement. When the submarine travels at a depth of 40 m and a speed of 20 knots, the wake will produce gravity gradient disturbance on the order of 10-9 s-2, thereby affecting the accuracy of underwater gravity gradient navigation. In such cases, it is necessary to preprocess the measured signal to eliminate or reduce the impact of wake.

underwater navigation  /  Bernoulli hump  /  Kelvin wake  /  internal wake  /  gravity gradient
张皓清, 杨立伟. 水下重力梯度导航中的潜艇尾迹影响分析. 大地测量与地球动力学, 2025 , 45 (11) : 1110 -1114 . DOI: 10.14075/j.jgg.2024.11.515
Haoqing ZHANG, Liwei YANG. Influence of Submarine Wake on Underwater Gravity Gradient Navigation[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (11) : 1110 -1114 . DOI: 10.14075/j.jgg.2024.11.515
Funding
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  • Gravity Gradient Navigation Project of Institute of Mechanics, CAS(220126230537)
Appendix
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Year 2025 volume 45 Issue 11
36
13
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Article Info
doi: 10.14075/j.jgg.2024.11.515
  • Receive Date：2024-11-12
  • Online Date：2026-10-29
  • Published：2025-11-15
Article Data
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History
  • Received：2024-11-12
Funding
Gravity Gradient Navigation Project of Institute of Mechanics, CAS(220126230537)
Affiliations
    1 School of Geological Engineering and Geomatics, Chang'an University, 126 Yanta Road, Xi'an 710054, China
    2 National Space Science Center, CAS, 1 Nanertiao, Zhongguancun, Beijing 100190, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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