Vocalization Source Level Distributions and Pulse Compression Gains of Diverse Baleen Whale Species in the Gulf of Maine
Vocalization Source Level Distributions and Pulse Compression Gains of Diverse Baleen Whale Species in the Gulf of Maine
复制标题
缅因湾多种须鲸的发声源水平分布和脉冲压缩增益
DOI：
10.3390/rs8110881
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
P. Ratilal
中科院分区：
文献类型：
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作者：
Delin Wang;Wei Huang;Heriberto A. Garcia;P. Ratilal
对缅因州湾四种不同的须鲸物种：蓝鲸、鳍鲸、小须鲸和须鲸的发声源水平分布和脉冲压缩增益进行了估计。利用被动海声波导遥感技术，采用大孔径密集采样的相干水听器阵列系统对海洋哺乳动物进行瞬时广域监测。对于每个须鲸物种，在相干波束形成后，400到1400多个测量到的声音具有显著的高信噪比（SNR bbb10 dB），并在大约1公里到38公里的范围内以高精度（定位误差<10%）进行了定位。利用基于随机距离相关海洋波导的校准抛物线方程的声传播模型，对鲸鱼发声接收压力水平进行宽带传输损失校正。宽带发声等效脉冲压缩增益为2.5±1.1。
The vocalization source level distributions and pulse compression gains are estimated for four distinct baleen whale species in the Gulf of Maine: blue, fin, minke, and sei. The vocalizations were received on a large-aperture densely sampled coherent hydrophone array system deployed to monitor marine mammals over instantaneous wide areas using the passive ocean acoustic waveguide remote sensing technique. For each baleen whale species, between 400 to over 1400 measured vocalizations with significantly high signal-to-noise ratios (SNR>10 dB) after coherent beamforming and localized with high accuracies (<10% localization errors) over ranges spanning roughly 1 km to 38 km are included in the analysis. The whale vocalization received pressure levels are corrected for broadband transmission losses modelled using a calibrated parabolic equation based acoustic propagation model for a random range-dependent ocean waveguide. The broadband vocalization equivalent pulse-compression gains are found to be 2.5±1.1 for...