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AN/TPS-75 Radar System

The AN/TPS-75 Radar System [ "Tipsy 75"] is a mobile, tactical radar system capable of providing radar azimuth, range, height, and Identification Friend or Foe (IFF) information for a 240-nautical-mile area. This deployable/transportable radar system is capable of providing long range radar data to support operations and control of tactical aircraft. The TPS-75 today forms the backbone of the US Air Force Air Defense system. The AN/TPS-75 Radar system provides a "real-time" radar airspace picture and data in support of the battle commander and the Ground Theater Air Control System (GTACS) via radio, telephone, microwave relay, or satellite communications link. The AN/TPS-75 radar system includes the UPX-27 IFF/SIF equipment, Tactical Air Operation Interface Gp OA 9194/TYQ-23(V)2, Modular Control Equipment Interface Group (MIG) and AN/TLQ-32 ARM Decoy. The AN/TPS-75 is a mobile ground radar set designed to conduct long-range search and altitude-finding operations simultaneously. Data from the AN/TPS-75 can be combined with information from other radar to form an integrated picture of the aerial battlefield for theater commanders. The 729th Air Control Squadron, Hill AFB, Utah, uses this radar for a variety of missions. The self-contained data gathering system operates independent of inclement weather and jamming environments and requires only a 400-Hz power source to operate.

The system weighs about 8,400 pounds. It may be transported via plane, helicopter or truck. This includes Air Force C-141 Starlifter, C-5 Galaxy, C-17 Globemaster III or C-130 Hercules aircraft. During daylight hours, a trained six-person crew can assemble the unit from transport mode to full operation within 90 minutes. A trained crew of nine can accomplish the same task within 2.5 hours at night. Disassembly of the set can be done in the same time. The unit's antenna operates from sea level to 10,000 feet in conditions that include winds up to 52 knots, ice as much as 1.2 radial inches in thickness, and heat up to 120 degrees Fahrenheit with 95 percent humidity.

Preplanned Product Improvement (P3I) for the AN/TPS-75 Radar include technology and cost risk reductions involving advanced development of a solid state transmitter or the AN/TPS radar are being pursued, in addition to system engineering support to various system program offices.


Weight shelter - app. 8,400 pounds
antenna - app. 7,400 pounds
Pulse Repetition Frequency (PRF) 235, 250, 275 +/- 0.5 Hz fixed, and two selectable average PRFs; 250 and 275 staggered. For each staggered selection, the transmitter operates sequentially on one of seven PRFs.
Transmitter Characteristics peak power - 2.8 MW nominal
verage power - 4.7 kW nominal
pulse width - 6.8 +/- 0.25 microseconds
Receiver Characteristicstype -seven logarithmic channels
sensitivity - negative 105 dB mds
dynamic range - 70 dB search, 70 dB height
intermediate frequency - 32 MHz
3-D Coverage (Search, Height and Range) azimuth - 360 degrees (operator controlled blanking optional)
elevation angles - 0.5 to 20 degrees above the radar horizon
maximum altitude - 95,500 feet
range - one to 240 nautical miles
scanning rate - approximately 6.5 rpm
dimensions 11 feet high by 18 feet 4 inches wide
polarization vertical beam width - 1.1 degrees horizontal and 1.55 degrees to 8.1 degrees with a total of 20 degrees (6 stacked beams)

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Maintained by Robert Sherman
Originally created by John Pike
Updated Saturday, March 27, 1999 4:16:45 PM