Marine Physical Laboratory, Scripps Institution of Oceanography, La Jolla, California 92093-0238, USA.
J Acoust Soc Am. 2011 Oct;130(4):EL154-60. doi: 10.1121/1.3630021.
This paper discusses the effects of frequency selection on source localization and geoacoustic inversion methods that use frequency coherent objective functions. Matched-field processors based on frequency-coherent objective functions often have rapidly fluctuating range ambiguity surfaces. Insufficient sampling in frequency domain results in range aliasing terms that affect geoacoustic inversion. Range aliasing and its effects on source localization and environmental parameter inversion are demonstrated on data collected during the MAPEX2000 experiment. Guidance for frequency selection to avoid range aliasing is provided.
本文讨论了频率选择对基于频率相干目标函数的声源定位和水声反演方法的影响。基于频率相干目标函数的匹配场处理器通常具有快速波动的距离模糊表面。频域中的采样不足会导致影响水声反演的距离混淆项。距离混淆及其对声源定位和环境参数反演的影响在 MAPEX2000 实验中采集的数据上进行了演示。提供了避免距离混淆的频率选择指导。
