一种逆式回声仪传播时间数据的处理方法

A Processing Method for Propagation Time Data of an Inverted Echo Sounder

摘要:

逆式回声仪（Inverted Echo Sounder，IES）是深海声层析领域主要的信息采集设备，它发射声信号并根据接收时间来反演海洋区域的物理性质。但是由于海洋深度的不均匀性，不同设备采集的信息难以进行统一使用。针对上述问题，基于墨西哥湾逆式回声仪采集数据开展研究，结合 IES 数据转化方法实现传播时间信息的拟合与去噪。还针对季节偏差与参考面转化进行深入研究，提出了一种考虑季节偏差的方法，将季节偏差从测量数据中剔除，并将时间数据转化到定义参考面上，有效提升了数据处理方法的鲁棒性。方法可适用于其他海域逆式回声仪数据的处理，也可为其他类似研究提供参考。

关键词:逆式回声仪;数据处理;深海声层析

Abstract:

Inverted Echo Sounder（IES）is the main information acquisition device in the field of deep-sea acoustic tomography，which emits acoustic signals and inverts the physical properties of ocean areas based on the time of reception. However，due to the inhomogeneity of ocean depths，it is difficult to use the information collected by different devices in a uniform way. In response to the above problems，the data collected by the inverted echo sounder in the Gulf of Mexico is studied，the fitting and denoising of propagation time information are realized combining with the IES data transformation method. In addition，an in-depth study on seasonal bias and reference surface transformation is conducted，and a method to consider seasonal bias is proposed，which removes seasonal bias from the measurement data and transforms the time data to the defined reference surface. The robustness of the data processing method is effectively improved. The method in this paper can be applied to the processing of inverse echosounder data in other sea areas，and can also provide a reference for other similar studies.

Key words:inverted echo sounder;data processing;deep-sea acoustic tomography