ABSTRACT
Wireless sensor networks are being increasingly deployed in a number of applications such as detection of missiles; identification of chemical, biological, or nuclear plumes; monitoring of rain forests; and command and control operations in battlefield environments. In general, such sensor networks could be quite varied, ranging from thousands or millions of unattended tiny sensing devices to a small number of sensor nodes equipped with large instruments and workstations. Since sensor failures and topological changes are common, sensor network should self-organize itself to maintain viability, which assures that an object that traverses the terrain is detected and the user is alerted. In addition, redundant nodes are usually necessary to ensure uninterrupted and reliable operations. Measurements from multiple sensors are sent to a fusion center over wireless channels to achieve a more accurate situation assessment.
