Abstract: Limited by the complex underground environment, most researches on wireless underground sensor networks (WUSN) are still in the theoretical stage. The channel model provided by the mainstream simulation platform is only suitable for the simulation above the ground. There is no suitable channel model which can reflect the serious loss of electromagnetic signal underground. To solve this problem and provide a WUSN simulation platform, a channel model considering not only the propagation of EM waves in soil, but also the reflection and multipath fading effects was adopted and implemented on NS2. Simulations were carried out on the platform, the packet throughput and energy consumption per useful bit were analyzed by simulation. The results show that the model can be used to reflect the underground communication well. This paper can be used as reference for future wireless underground network research.
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Key words:  WUSN, NS2, wireless channel, simulation