物理学报Issue(2)：1-8,8.DOI:10.7498/aps.64.024302
声速剖面对不同深度声源定位的影响∗
Influences of sound sp eed profile on the source lo calization of different depths
摘要
Abstract
It is found in the data processing of matched filed source localization experiment that in the case of the slight mismatch of sound speed profile, the louder source below disappears while the weaker source above comes out. Based on the experimental phenomenon, the influences of the sound speed profile on the source localization of different depths are investigated. Firstly, the simulation is conducted in order to extract the influence of the uncertain factors in the sea test, from which it is further concluded that the deeper source is greatly affected. Then another simulation about the mismatch of the depth of the thermocline is conducted in the typical shallow-water negative gradient environment, from which a preliminary conclusion is drawn that the most sensitive depth to the mismatch of the sound speed profile is around 10 meters below the lower boundary thermocline. Finally, this pheonomenon is reasonably explained through a theoretical analysis from two aspects of the normal mode theory.关键词
声速剖面失配/匹配场定位/水动力简正波/简正波Key words
sound speed profile mismatch/matched field processing/hydrodynamic normal mode/normal mode引用本文复制引用
苏林,马力,宋文华,郭圣明,鹿力成..声速剖面对不同深度声源定位的影响∗[J].物理学报,2015,(2):1-8,8.基金项目
国家自然科学基金(批准号:11004214,11274338)资助的课题.@@@@* Project supported by the National Natural Science Foundation of China (Grant Nos.11004214,11274338) （批准号:11004214,11274338）
