With a standard 3×3 as the basic network, the concept and recovery principle of the L + l fault tolerance strategy were introduced, and the navy fleet combat system networks was used as an object of research object. The Matlab-Simulink was adopted to emulate the 4 indexes: blocking probability, average path length, probability of reassignment and effective utilization. And then the recovery degree of the network was contrasted under 3 strategies: no strategy, backup multiplexing and L + l fault tolerance strategy. As a result, the L + l fault tolerance strategy was proved to be feasible and effective.%以标准3×3网格为基础网络,介绍了L+1容错恢复策略的概念和恢复原理,以海上舰艇编队作战系统网络为研究对象,使用Matlab-Simulink仿真工具,通过对阻塞概率、平均路径长度、路径重新分配概率和有效利用率4个指标的仿真,对比了该网络在无策略、备份多路和L+1容错恢复3种策略下网络的恢复程度,验证了L+1容错恢复策略的有效性和可行性.
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