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The Inner Workings Of A Radar Detector 

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.
The cops use these radar guns which operate by transmitting radio waves from the radar to your car and then wait for the waves to bounce back. And because radio waves move through the air at a constant speed, which is the speed of light, radars can easily determine just how far away an object is based on the amount of time it takes for that radio signal to return. When an object such as a 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.
One of the newer technologies that law enforcement officers are using is lasers to determine the speed of a vehicle. A laser is nothing more than a concentrated beam of light. Laser radar guns measure the time it takes for infrared light to leave its origin, reach a car, bounce off and then return. These tools can determine how far away an object is by multiplying this time by the speed of light. Because this type of radar sends out many bursts of light to determine multiple distances, the system can determine how fast the car is moving by comparing these samples.
The laser is a new problem for speeders. The thing is that since laser speed detectors have a much more focused beam and can detect lasers over greater distances, the police laser guns are much more difficult to elude. While modern radar detectors often come equipped with a light-sensitive panel that will detect these light beams, the problem is that the speed of the car has already been measured by the time it is detected.
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 have an idea of how these pieces of electronics work, then perhaps you can avoid getting speeding tickets in the future. If speeding tickets have been a problem for you, then you may want to consider buying one of these units. They will pay for themselves in a very short time.

Article Source: http://www.uberarticles.com/articles

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