Radar Detectors & Lasers
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Moving Radar
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Moving Radar is absolutely the most unpredictable form of speed trap, appearing anywhere at any time. It also features the most potential inaccuracies. There are thousands of moving radars mounted on Highway Patrol cars throughout Australia. Models include Decatur Genesis, Stalker and Kustom Eagle II.
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Decatur Genesis
The Decatur "Genesis Select" is an example of state-of-the-art moving radar. As with all dual antenna types, the Genesis can record speeds of vehicles traveling in both directions coming towards and going away from the Patrol Car. The units used in Queensland (Australia) have a single radar antenna. They record the speeds of vehicles coming towards the forward facing antenna and those in front going in the same direction. The "DGS" operates within the Australian "Ka" band. The specific frequency is 35.1 GHz.
Decatur Genesis Select
Kustom moving radars have been operated by Highway Patrols in Australia since the late 1970s. Most are the KR10 SP model. Some Hawk and Eagle units are in use with various states. The Eagle II uses the smaller Ka-band antennas. The frequency is 34.9 GHz.
Kustom KR10SP
Kustom KR10SP
Stalker DSR
The Stalker DSR is operated the Victorian Highway Patrol. Perhaps the most advanced moving radar in the world, the dual-antenna version of the Stalker records speeds of vehicles coming and going towards the patrol car in the same or opposite lanes. The Stalker frequency is 34.7 GHz right in the centre of the Australian "Ka" band.
Stalker DSR Moving Radar
Limitations of Moving Radar:
Moving radar is prone to different errors than stationary radar. The most common is "tracking" error. A portion of the radar beam reflects off the "terrain" to calculate the speed of the patrol vehicle. The radar thinks it is stationary and the road is proceeding towards it at speed. Sometimes the radar picks up reflections from large stationary or moving objects thereby producing a tracking velocity that is lower than true speed. When subtracted from the "closing" velocity of the police and target vehicle, the target speed is increased proportionately. An innocent driver can be ticketed.
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