| 张忠兵,马远良,鄢社锋.浅海中沉积层参数对多途到达时差反演声速剖面的影响[J].,2002,21(3):11-17 |
| 浅海中沉积层参数对多途到达时差反演声速剖面的影响 |
| The effect of sediment parameters on sound speed profile inversionusing time differences of acoustic ray arrivals in shallow water |
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| 中文摘要: |
| 本文以简正波模型和声线模型为基础,通过计算机仿真,研究了浅海多途到达时延差结构与沉积层密度、声速、传播损失系数等参数的关系。针对100m左右浅海和600－1300Hz的信号频率,对两种模型仿真结果进行了比较。结果表明,声线模型仿真得到的多途到达时延差结构与简正波模型仿真的结果基本一致。沉积层参数失配对基于声线模型的多途到达时差反演SSP的影响为:反演声速剖面的均方根误差的变化小于1.45m/s,平均误差的变化小于2．60m/s。这说明,在所使用的频段内,浅海沉积层参数对多途到达时差反演浅海声速剖面的影响不大,工程应用中可以忽略不计。 |
| 英文摘要: |
| The effect of sediment density, speed, attenuation of compressional wave onsound speed profile inversion using time differences of acoustic ray arrivals in shallowwater is investigated, by normal mode modeling and ray modeling through computersimulation. Simulated results show that assuming the water depth is around 100 metersand the signal frequency employed is around 600-1300Hz, the use of ray arrival differencesfor sound speed profile inversion is feasible. It is satisfactory for combating sedimentparameters mismatching and greatly reduces the amount of copy vector calculation forwide-band signals. |
| DOI：10.11684/j.issn.1000-310X.2002.03.005 |
| 中文关键词: 声速剖面 反演 沉积层参数 |
| 英文关键词: Sound speed profile Inversion Sediment parameters |
| 基金项目: |
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