||This article may be too technical for most readers to understand. (November 2013) (Learn how and when to remove this template message)|
An Australian AN/TPS-77 in 2007
|Country of origin||United States|
|Type||Long-Range Radar System|
|Frequency||1215 to 1400 MHz (D/L)|
|Pulsewidth||51.2 / 409.6 μS|
|RPM||5 or 6 RPMs|
|Range||470 km (250 nmi)|
|Altitude||30.5 km (100,000 ft)|
|Azimuth||0.18° at 250 km|
|Elevation||-6° to +20°|
The system is a low power, long range (200-250 nautical miles), L-band pencil beam, solid-state transmitter and beacon interrogator search radar. System design includes a redundant architecture with computer software remote controlled and monitored operations to minimize manning requirements.
The AN/FPS-117 is in use as part of the American-Canadian North Warning System of radars stretching across North America from Alaska, USA to Labrador, Canada. This North Warning System is designed to provide long-range detection and coverage for drug interdiction support and tactical command and control.
Implementation of the North Warning System has resulted in a reduction in Operations and Maintenance (O&M) spending by up to 50% compared to previous systems. Due to extreme northern locations of these radars, the physics of radiowave propagation in the 1215-1400 MHz frequency range is even more critical for target detection requirements. The Air Force and the FAA also operate a limited number of AN/FPS-117 radars within the continental United States. The AN/FPS-117 radar is capable of randomly hopping among 18 channels in the 1215-1400 MHz band.
In 2011, Lockheed Martin was awarded a contract to upgrade the radars to extend their operational lives through 2025.
It is in operation in several other countries including Australia, Belgium, Brazil, Croatia, Denmark, Estonia, Germany, Hungary, Iceland, Indonesia, Iraq, Italy, Jordan, Kuwait, Latvia, Pakistan, Romania, Saudi Arabia, Singapore, South Korea, Taiwan, Thailand, Greece, Turkey and the United Kingdom.
Originally selected for the Alaskan Air Command's SEEK IGLOO project, the radar was also picked to replace the United States Air Force's AN/FPS-67 radar at Berlin's Tempelhof Central Airport and was commissioned at Tempelhof in July 1984.
The transportable version is called AN/TPS-77.
It is similar to the AN/TPS-59.
|Wikimedia Commons has media related to AN/FPS-117.|
- Lockheed Martin. "AN/FPS-117 LONG-RANGE AIR SURVEILLANCE RADARS" (PDF). Retrieved 2013-10-13.
- "AN/FPS Series". alternatewars.com. Retrieved 2013-10-13.
- "Lockheed Martin to Modernize 29 U.S. Air Force Early Warning Long-Range Surveillance Radars." Archived November 8, 2011, at the Wayback Machine. Lockheed Martin, 7 November 2011.