Effects of surface ship motion attitude on acoustic scattering characteristics

		海况等级
		2	3	4	5	6
横摇	双幅度M₁/(°)	3.50	10.40	22.20	38.40	59.10
横摇	周期T₁/s	8.60	9.50	11.10	12.20	15.60
纵摇	双幅度M₂/(°)	0.31	0.92	2.00	3.40	5.50
纵摇	周期T₂/s	4.70	5.21	6.10	6.70	8.60
艏摇	双幅度M₃/(°)	0.35	1.02	2.20	3.80	5.80
艏摇	周期T₃/s	10.00	11.10	12.90	14.20	18.20

Table 2. Summary of influence of different grid divisions on surface ship target strength

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Table 2. Summary of influence of different grid divisions on surface ship target strength

网格最大单元/m	网格数量/个	计算时间/s	均值/dB	目标强度偏差
1.000	10840	10.72	15.49	1.58
0.500	37 171	22.05	14.35	0.44
0.300	70 501	37.38	13.91	0
0.050	3 540 597	363.23	12.71	−1.20
0.025	14 282 204	65 806.88	12.74	−1.17

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Yan LIU, Linjiang HAN, Pengcheng CHAI, Fulin ZHOU, Zilong PENG. Effects of surface ship motion attitude on acoustic scattering characteristics[J]. Chinese Journal of Ship Research, 2023, 18(3): 104

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Paper Information

Category: Ship Design and Performance

Received: Dec. 1, 2021

Accepted: --

Published Online: Mar. 20, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.02676

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Amplitudes and periods of typical 3-DOF motion for surface ship under different sea conditions[13]

Table 1. Amplitudes and periods of typical 3-DOF motion for surface ship under different sea conditions[13]

Table 2. Summary of influence of different grid divisions on surface ship target strength

Table 2. Summary of influence of different grid divisions on surface ship target strength

Table 1. Amplitudes and periods of typical 3-DOF motion for surface ship under different sea conditions^[13]

Table 1. Amplitudes and periods of typical 3-DOF motion for surface ship under different sea conditions^[13]