Communication Characteristic Research On Wireless Underground Communication In Near-Surface

With the development of technologies and network developed, the times of Intelligent Network has come. People can enjoy a more comfortable and convenient life in their daily life with the help of all kinds of Intelligent Networks devices. Especially the concept of "Internet of Things" has been proposed and rapidly developed in the latest years. Wireless Underground Network communication has become more and more popular for its application scenarios ranges from Intelligent Agriculture, Intelligent mining and intelligent traffic controlling. Though WSN has obviously important application Scenarios it is more than a challenging area considering the complexity of the soil. However, with the effort of so many experts spend in WSNs; it must have a bright future.Firstly, the propagation model of electric magnetic has been discussed in the paper using "steepest drop speed" and "Special function" method. What’s more, the section focuses on the influence of sources in the wireless communication systems.Secondly, the channel model of the electric magnetic propagation in the soil has been studied. Valuable conclusions in wireless underground communication systems have been summarized. The conclusions in the paper have value in the design of wireless underground communication systems.Thirdly, the theoretical method of the solution called "micro element" has been successfully applied in the paper. The propagation of electric magnetic in the non-uniform soil has been discussed using "micro element". Combined with the spatial character of soil and feature of Kriging interpolation, the model of soil in wireless underground communication systems has been made.Finally, the solution of electric magnetic wave propagation in non-uniform soil has been proposed in the paper. Moreover, the key setting of ADI-FDTD has been discussed. Two classical kinds of soil type have been the example using the solution, verifying the result of the "micro element" methods.The paper will provide valuable advice for the design and implementation of wireless underground communication systems.