Localization in UWB Sensor Networks for Agriculture Environment

Information technologies are becoming more and more important for agricultural development. In the intelligent monitoring and control of agriculture environments, localization has many attractive applications. On the basis of IEEE 802.15.4a, we adopt the farm channel model CM7 to position in ultra- wideband (UWB) sensor networks for agriculture environments. Maximum likelihood estimation (MLE) based UWB RSSI ranging is proposed, the relation between localization error and ranging error is analyzed. Then, we joint impulse radio UWB, RSSI ranging and localization algorithm, passive UWB RFID Tags to provide a novel UWB sensor localization network in agriculture environments. Simulation results indicate that our ranging method, localization algorithm and network model achieve a significant improvement in the performance of ranging and localization for applications in precision agriculture.