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Jeremy Dunn (Laser Technology Inc.) developed a police lidar device in 1989, [3] and in 2004 10% of U.S. sales of traffic enforcement devices were lidar rising to 30% in 2006, [1] given the advantages of lidar it appears likely that the majority of current sales are lidar, although sophisticated radar units are still being sold.
In Germany, at least a 3 km/h tolerance (3% of measured speed when speeding over 100 km/h) in favor of the offender is always deducted. This tolerance can increase up to 20% depending on the method of measurement. [52] Fines for speeding depend on how high above the speed limit the measured speed is and where the offense occurred.
By calculating the speed of users along a stretch of road, Google is able to generate a live traffic map. [1] Its subsidiary, Waze, also allows users to report directly via a smartphone app. TomTom Traffic uses crowd-sourced data from mobile phone users, along with data from traditional sources such as induction loops and traffic cameras.
The Distant Early Warning (DEW) Line, constructed in the late 1950s, was reaching obsolescence in the 1980s.With the signing of North American Air Defence Modernization agreement at the "Shamrock Summit" between Prime Minister Mulroney and President Reagan in Quebec City on 18 March 1985, the DEW Line began its eventual upgrading and transition becoming the North Warning System (NWS) of today.
Square Pair – fire control radar of the SA-5 system; Square Tie – surface search radar for small combatants and cruise missile target designation. [1] Squat Eye – alternate target acquisition radar of the SA-3 system; Steel Yard – The Duga over-the-horizon radar; Straight Flush – fire control radar of the SA-6 system
The frequency selection of weather radar is a performance compromise between precipitation reflectivity and attenuation due to atmospheric water vapor. Some weather radars uses doppler shift to measure wind speeds and dual-polarization for identification of types of precipitations. [3] [4] Weather radar; Wind profilers; Millimetre cloud radar ...
[6] [31] Netherlands-based Gatso presented red light cameras to the market in 1965, [19] and red light cameras were used for traffic enforcement in Israel as early as 1969. [3] In the early 1970s, red light cameras were used for traffic enforcement in at least one jurisdiction in Europe. [3] Australia began to use them on a wide scale in the 1980s.
The detection performance of the Zaslon radar is stated to be 200 km against a target with a radar cross section (RCS) of 16 m 2, the radar can track up to 10 targets while engaging 4 of those at any one time with either R-33 radar guided or R-40, R-60 IR-guided air-to-air missiles. [5] The Zaslon was the Soviet Union's second look-down/shoot ...