The Basic Principles Behind a Radar Gun

Police officer pointing a radar gun

A radar gun specifically works as a radar detector that helps identify a specific electromagnetic wave transmitted by a laser gun, which is often used by the police. To simply put it, the basic function of radar is to help you detect the distance and speed of a certain object.

But how does a speed radar gun work? Read on to find out.

The Basic Principle Behind a Radar Gun

Radars are often used to identify the distance of an object and how fast it’s moving. A radar device emits a specific radio wave, which bounces back to the radar device as soon as it encounters a certain object in its path. Based on how long it’ll take for the radio wave to bounce back from the designated object, the radar gun can immediately figure out the distance between the device and the object.

So, if the car is traveling toward the radar gun, the second specific segment of the radio wave travels at a shorter distance compared to the first segment of radio wave before it was reflected. The frequency increases as soon as both the peaks and valleys of the waves are squeezed together. So, if the vehicle is traveling at least 60kph and the radar gun identifies that the vehicle is moving away at 20Kph, then the vehicle may be traveling at least 80kph.

Use of Laser Guns to Police Operations

Police officers have been using laser guns in the past few years. The LIDAR gun or otherwise known as light detection and ranging uses concentrated light, which helps determine the distance of the object. Unlike the traditional radar that the police use, LIDAR sends out several infrared bursts in only a short period in order to collect several distance measurements instead of measuring the change in the radio wave frequency.

Modern detectors currently include a light-sensitive panel specially designed to detect beams coming from LIDAR. These devices are more challenging to evade compared to traditional radar because of its highly developed beam; therefore, providing a better quality and data output than traditional radar detectors.