Radar Detection

A radar detector is an electronic device which is used by various motorists to monitor their speed. The term radar detector has been derived from the speed detection technologies and is used by the police to determine the vehicle’s speed due to the change in the frequency waves. The radar detectors currently in use detect the signals which use various wavelength bands such as K, X and Ka bands. New radar detectors use pulsed laser light instead of radio waves. Now a days, the radar detectors which are used by the police is the POP radar to detect the vehicle’s speed.

The radar detectors used by most of the drivers are attached to the inconspicuous area and the visor. In some countries such as Belgium , Australia , Germany , Finland etc, using a radar detector is illegal and can also lead to penalties and seizure of the device

The radar which detects the speed of the vehicles totally depends on the model and make over of the radar gun which is often used by the law enforcement. The primary function of the radar gun is to send a radio signal at certain frequency. Then the signal detects the targeted object i.e the vehicle and sends back to the radar gun.

The signal moves at a constant speed and the time is calculated by the computer that how much time is taken by the signal to return. The frequency becomes higher due to the Doppler shift when the target object moves towards the radar gun. So, the police can easily calculate the speed of the moving vehicle in a few minutes without waiting at the side of the highway to detect the speed with radar guns.

A radar detector uses the same radio frequency as the radar guns but the police can change their frequencies. Due to this frequency, a car radio can easily catch the signal on FM or an AM channel. The radar detector has the ability to send both an audio and visual signals to the driver which can easily slow down the speed of the vehicle.

In order to have constant broadcast, quick bursts are used by the new radar guns which are called as K-band range by the police. If the speeders have already clocked then also sophisticated radar detector can easily catch the signals. Some radar detectors are inexpensive and some are costly, so the driver should buy an appropriate radar detector according to the quality and needs.

The latest development has been done to detect the speed which makes use of the laser light instead of soundwaves. LIDAR has been set up by the law enforcers so that the speed can be detected automatically through the frequency wavelengths. The light matches with the frequency of the gun and extra electronic noise is included.