说明：  几种用于WSN的仿真工具比较:为了实现无线传感器网络的仿真，研究人员设计开发(或在现有平台建立无线传感器网络模型)了许多的仿真平台，包括NS-2, OPNET,   SensorSim, EmStar, OMNet, G1oMoSim, TOSSIM, PowerTOSSIM等
(Several simulation tools for WSN comparison: In order to achieve wireless sensor network simulation, the researchers designed and developed (or existing platforms for wireless sensor network model) a lot of simulation platform, including NS-2, OPNET, SensorSim, EmStar , OMNet, G1oMoSim, TOSSIM, PowerTOSSIM etc.)