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The sound field in shallow water is closely relatcd to the acoustic properties of thesea bottom which has complicated stratified structure. The influence of the bottom onthe sound field may be described in terms of reflection coefficient. In early papers, somesimplified dependence of the bottom reflection loss on the grazing angle has been sug-gested. But these models cannot reflect the main characteristics of angular dependenceof reflection loss in all cases. In this paper a simple approach to the problem is sug-gested. The sound field in homogeneous shallow water can be calculated for sea bottom,the reflection loss of which is arbitrarily monotonously increasing function of grazingangle. In this paper it is pointed out that there is a simple transformation between theangle dependence of bottom reflection loss and transmission ratio of sound field.
The sound field in shallow water is closely relatcd to the acoustic properties of thesea bottom which has complicated stratified structure. The influence of the bottom on the sound field may be described in terms of reflection coefficient. In early papers, somesimplified dependence of the bottom reflection loss on the grazing angle has been sug-gested. But these models can not reflect the main characteristics of angular dependenceof reflection loss in all cases. In this paper a simple approach to the problem is sug-gested. calculated for sea bottom, the reflection loss of which is arbitrarily monotonously increasing function of grazingangle. In this paper it is pointed out that there is a simple transformation between theangle dependence of bottom reflection loss and transmission ratio of sound field.