Modeled High-Frequency Acoustic Backscattered Levels from Range-Independent andSimplistic Range-Dependent Sand Bottoms

摘要

Results investigating the effects of variable bottom composition on modeled high-frequency backscattered levels are presented for a typical shallow-water, variable bottom (range-dependent) environment. The modeled environment consisted of a single sound speed profile, a flat sea bottom with range-dependent bottom composition, and a smooth, flat sea surface. Coarse-and fine-grained sandy areas were partitioned in range to create range dependence. Bottom backscattering and reflection loss for each partition were obtained from a recent University of Texas high-frequency ocean bottom backscatter model. Maximum differences of S dB