| 浅海二维海底散射系数的测量 |
| |
| 引用本文： | 金国亮,吴承义,张国华,贺邦正. 浅海二维海底散射系数的测量[J]. 声学学报,1987,12(3): 227-231. DOI: 10.15949/j.cnki.0371-0025.1987.03.009 |
| |
| 作者姓名： | 金国亮 吴承义 张国华 贺邦正 |
| |
| 作者单位： | 中国科学院声学研究所(金国亮，吴承义，张国华)，中国科学院声学研究所(贺邦正) |
| |
| 摘 要： | 本文介绍了一种在浅海中直接测量海底二维后向散射系数的方法,并用来获得散射系数对入射和散射掠角的依赖关系。使用的声频率为10kHz,测量的掠角范围为0.6°至40°。实验中我们还验证了海底散射系数对入射和散射掠角依赖关系的互易性。此外,在测量散射系数的同时,我们测量了10kHz频率的混响级及海底反射系数。实验海区的声速剖面为负跃层。把测得的海底散射和反射系数代入混响理论计算公式所求得的结果与实测到的混响级相符得很好。
|
| 收稿时间： | 1984-12-20 |
THE MEASUREMENT OF TWO-DIMENSIONAL BOTTOM BACKSCATTERING COEFFICIENTS AT SHALLOW WATER |
| |
| JIN Guo-liang,WU Cheng-yi,ZHANG Guo-hua,HE Bang-zheng. THE MEASUREMENT OF TWO-DIMENSIONAL BOTTOM BACKSCATTERING COEFFICIENTS AT SHALLOW WATER[J]. ACTA ACUSTICA,1987,12(3): 227-231. DOI: 10.15949/j.cnki.0371-0025.1987.03.009 |
| |
| Authors: | JIN Guo-liang WU Cheng-yi ZHANG Guo-hua HE Bang-zheng |
| |
| Abstract: | A frame with ten transducers,s paced vertically in the intervals of 0.5 m,was mounted on the sea bottom to measure the monostatic and bistatic backscattering from the sea floor. The bottom was sandy silt and the water depth was about 63 m. By turns,one of these transducers transmitted sound pulses with the frequency of 10 kHz and the rest （or the same one） received the signals scattered from the bottom. In this way,the bottom backscattering coefficients were measured as a function of both incident and scattering grazing angles （0.6°-40°）. Meanwhile,the bottom reflection coefficient and reverberation intensities were also measured in the same area under the condition of thermocline. By feeding the measured bottom scattering and reflection coefficients as well as the sound-speed profile into the model of reverberation [Zhang Ren-he and Jin Guo-liang,Acta Acustica,9,（1984）,12-19],we have estimated the reverberation intensities which are in good agreement with the measured data. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《声学学报》浏览原始摘要信息 |
|
点击此处可从《声学学报》下载全文 |
|
