How A Radar Detector Operates

Author: Tommy Joe Canter

State Troopers have been utilizing radar to measure the speed of drivers and to assist them in maintaining safe roads for several years. However, a lot of drivers have started using radar detectors to help them keep from paying costly fines for speeding violations. In spite of the popularity of radars and radar detectors, there are lots of people who still do not understand the science or technology behind them.

These radar guns operate by transmitting radio waves from the radar to your vehicle and then they wait for the waves to reflect back. And since radio waves move through the air at a constant speed, which is the speed of light, radars can easily compute just how far away an object is based on the amount of time it takes for the signal to return. When an object such as your car is in motion, there is a change in the frequency of these radio waves.

Radars look at this frequency change and then convert it into miles per hour which then determines the speed of its target. Additionally, radar guns use various kinds of wave bands to determine the speed of the target, including X band, K band, and Ka band. So then a radar detector lets the driver know whenever it detects the presence of radars in the area.

A newer technology that some police officers are using is lasers which can also determine the speed of a vehicle. A laser is nothing more than a concentrated beam of light. Laser radar guns compute the time it takes for an infrared light beam to leave the gun, reach a car, bounce off and then return back. These units can determine how far away an object is by multiplying this time by the speed of light. Since this type of radar sends out many bursts of light to determine multiple distances, the system can assess how fast the car is moving by comparing these samples.

The thing is that while laser speed detectors have a much more focused beam and can detect lasers over great distances, these police laser guns are generally more difficult to evade. While modern radar detectors often include a light-sensitive panel that detects these light beams, the problem is that by the time the detector senses them, the vehicle is usually already in the sights of the beam.

While the typical radar detector alerts the driver to the presence of a radar or laser, there are now detectors available on the market that will also emit a jamming signal. This signal will duplicate the original signal from the police radar gun and mixes it with additional radio noises, which will serve to confuse the radar receiver. This will prevent the police officer from getting an accurate speed reading.

Some of these newer detectors can also jam a laser by that producing a light beam of their own. The beam prevents the receiver from recognizing any reflected light to get a clear reading on the speed of the vehicle.

So now that you understand just how these units operate, then maybe you can eliminate some speeding tickets in the future. If speeding tickets have been bothersome for you, then perhaps you would want to buy one of these units. They will pay for themselves in a short time.

Fed up with have to pay for speeding tickets?? Why not visit our site for a discount radar detector, or simply the latest laser and radar detector. They will pay for themselves in no time.