A wireless perimeter protection and intrusion detection system

Sensor systems with volumetric coverage of large areas are in high demand for general infrastructure protection. This paper describes a radio frequency communication system that allows for real-time evaluation of changes to established field patterns for the purpose of locating and tracking unwanted intruders. It is based on high confidence probabilistic algorithms and protocols that sample the environment every second. The protocols are implemented in firmware making the system capable of detecting disturbances in real-time. During a field test, system calibration and sensor performance were recorded, mapped, and displayed in a control room. For example, it is possible to simultaneous locate and track single and multiple intruders in a protected area of 100,000 square feet with a single unit. Left behind items and people in hiding are easily detected and all intrusions are verified by an automatically cued camera. The system described here is extremely effective where most fence-based systems fail.