The Relocatable Over-the-Horizon Radar (ROTHR) is a proven long range surveillance radar in service with the U.S. government, deployed to detect and track aircraft and ship targets at ranges to 2500 nautical miles.

The ROTHR system has been operational with the U.S. government for over 15 years, supporting the counter drug mission in the Caribbean Sea and South America, and early warning detection for Navy vessels at sea. Each radar provides in excess of 2.5 million square miles of coverage area resulting in extremely low operational costs. Each ROTHR system operates 24/7/365 and detects in excess of 350,000 targets per year. It is currently the U.S. government's primary surveillance system for the counter drug mission.

The ROTHR system uses ionospheric propagation to detect and track targets at all altitudes and on the surface. The extremely long detection ranges permit a large amount of flexibility in the siting of each individual system to accommodate performance while achieving mission requirements. Each system can be remotely deployed and controlled by a single Consolidated Operations Control Center (OCC) that is located at the user's convenience. All systems data is shared to provide a seamless transition of tracking information. The OCC can provide individual radar tracks that are fused, processed and reported to higher command levels or to a fully integrated sensor network.

Raytheon is currently evaluating the use of ROTHR to provide Wide Area Surveillance for a National Coastal Surveillance System for Homeland Defense. As an operational and deployed asset with ground-based results, ROTHR is a low risk and cost effective, proven solution for improving the security of the U.S. coastline.

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