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First built in 1995 as a modification of AN/TPQ-36A for search and track role in the Norwegian NASAMS air defense system, the Sentinel radar is deployed with forward area air defense units of the U.S. Army. Mounted on a towed platform, it can be positioned remotely from the rest of the unit.
In a major departure from previous GPS designs, the M-code is intended to be broadcast from a high-gain directional antenna, in addition to a wide angle (full Earth) antenna. The directional antenna's signal, termed a spot beam , is intended to be aimed at a specific region (i.e., several hundred kilometers in diameter) and increase the local ...
GPS transmits 2 signal types: military and a commercial. The accuracy of the military signal is classified but can be assumed to be well under 0.5 meters. The GPS system space segment is composed of 24 to 32 satellites in medium Earth orbit at an altitude of approximately 20,200 km (12,600 mi).
A GPS tracking unit, geotracking unit, satellite tracking unit, or simply tracker is a navigation device normally on a vehicle, asset, person or animal that uses satellite navigation to determine its movement and determine its WGS84 UTM geographic position (geotracking) to determine its location. [1]
Current drop zones are quite large; 600 yd (549 m) or more. Airdropping sequential loads (multiple loads aboard a single aircraft) requires very long drop zones on the order of 0.5 mi (0.8 km) or more, or else the aircraft must make multiple passes over the same area, a tactically unsound thing to do.
The Joint Direct Attack Munition (JDAM) is a guidance kit that converts unguided bombs, or "dumb bombs", into all-weather precision-guided munitions (PGMs). JDAM-equipped bombs are guided by an integrated inertial guidance system coupled to a Global Positioning System (GPS) receiver, giving them a published range of up to 15 nautical miles (28 km).
A counter-battery radar or weapon tracking radar is a radar system that detects artillery projectiles fired by one or more guns, howitzers, mortars or rocket launchers and, from their trajectories, locates the position on the ground of the weapon that fired it. [1]: 5–18 Such radars are a subclass of the wider class of target acquisition radars.
Close Cooperation Control Unit truck mounted tracking radar: AN/MPQ-4: Counter-mortar (Firefinder) Radar: AN/MPQ-12: MGM-5 Corporal: AN/MPQ-33: High Power Illuminator doppler Radar (HPIR) MIM-23 Hawk: AN/MPQ-34: Continuous Wave Acquisition Radar (CWAR) MIM-23 Hawk: AN/MPQ-35: High/medium-altitude threat detection radar: MIM-23 Hawk: AN/MPQ-37 ...