Tracking Underground Moving Targets with Wireless Seismic Networks

Monitoring and tracking the underground moving target have many important applications, such as homeland security and defense applications. A wireless seismic network is designed to sense the seismic wave generated by the moving target and locate the target based on Reverse Time Migration (RTM) method. A new Gaussian Beam Migration (GBM) algorithm is used to improve the traditional RTM algorithm. The GBM-RTM method is a time-frequency domain algorithm, where the complex time domain calculation is transformed to a simple frequency domain calculation. By using GBM-RTM method, we accelerate the computation and reduce the communication cost. Through the extensive simulations and experiments, we demonstrate the trajectory tracking of the moving underground targets. The stability and accuracy of our proposed localization algorithms are also evaluated.