说明：  用matalb仿真来判断无线传感器网络中的各个节点是否连通。其中包含判断连通率的函数和覆盖率的算法。可以计算最小发射功率。
(Matalb simulation to determine whether the use of wireless sensor network each node connectivity. Which contains a function to determine connectivity rate and coverage algorithms. You can calculate the minimum transmission power.)