Ｂｒｙａｎ提出的测量海底沉积层连的射线参数法可以推广到平行倾斜情况下使用。本文给出了计算地层声速和厚度的表达式，并且对于在实用中一些需要考虑的问题（如地层回波的数据处理，由射线参数和地层倾斜角的不确定性引起的声速测量误差等）作了分析，从而为测量系统的设计提供了依据。 Bryan’s method of measuring the ray parameters of seafloor sediments can be generalized to parallel slopes. In this paper, some expressions for calculating the velocity and thickness of the formation are given, and some practical problems (such as data processing of formation echoes, sound velocity measurement error caused by the uncertainty of ray parameters and formation tilt angle, etc.) Made an analysis, which provides the basis for the measurement system design.