ABSTRACT The image source method is a fast tool to perform sound‐speed profile estimations for sediment tomography. It uses a broadband source and an array of receivers and is based on the representation of the reflected wave from sediment interfaces by image sources and on array processing techniques. Image sources are automatically detected by the array and the sound‐speed profile is deduced directly from their locations. Thus, the method has a low computational cost and can be applied to large data sets. The image source method has been under development during the last decade and has proven its efficiency on simulated data and at‐sea experiment data. The objective of this paper is to review these advances of the image source method.

中文翻译：

---

Image-Source 方法：地声反演工具

摘要 图像源方法是进行沉积层断层扫描声速剖面估计的快速工具。它使用宽带源和接收器阵列，并基于图像源和阵列处理技术对沉积物界面反射波的表示。图像源由阵列自动检测，声速分布直接从它们的位置推断出来。因此，该方法计算成本低，可以应用于大数据集。图像源方法在过去十年中一直在开发中，并在模拟数据和海上实验数据上证明了其效率。本文的目的是回顾图像源方法的这些进步。