本文根据水声信道的传播特性和簇结构水声传感器网络的结构特征，结合接收信号的信干噪比定义了分簇网络中节点成功传输概率和网络吞吐量密度等性能指标，阐述了上述各参数之间的内在联系，建立了基于多信道的簇结构水声传感器网络容量分析模型。通过计算机仿真分析了干扰受限网络中在随机选择信道及按节点ID号划分信道两种信道分配方式下的网络容量性能。仿真结果表明在给定网络监测范围条件下，存在某个最优的节点密度使网络的容量得到最大值。此外，本文还分析了网络的工作频段、节点发射功率以及簇结构覆盖区域大小对网络容量性能的影响，并通过仿真验证了理论分析的有效性，为簇结构水声传感器网络的应用设计提供一定的参考依据。

A network capacity analytic model based on the propagation characteristics of underwater acoustic channel and structure features of cluster-based underwater acoustic sensor network is presented in this paper. On the basis of SINR, the success probability, and throughput density are defined accordingly. The computer simulation analysis is carried on the interference limited network under two different channel allocation methods: the randomly selecting way and the stationary dividing way by node s’ IDs. The results show that under a given network monitoring scope, there is always an optimal network node density which can result in the maximum capacity. The influence of the network ’s frequency, the node’s emission power and the size of the cluster structure on network capacity is also studied in this paper. The simulation results verify the validity of the theoretical analysis, and can provide some reference for the application design of the cluster-based underwater acoustic sensor networks.