globehall.com globehall.com
Main :> About Us :> Place Your Link :> Security & Privacy :> Terms & Conditions :> Add Your Article
Search:   
Add URL
 
 

Academics & Learning

 

Sports

 

Hygiene & Health

 

Drink & Food

 

Automobile & Automotive

 

Estate & Realty

 

Fashion & Relationships

 

Companies & Business

 

Issues & News

 

Indoor Games

 

Computers & Software

 

Self Management

 

Jobs & Employment

 

Hotels & Travel

 

Medicine & Treatment

 

Technology & Science

 

Investment & Finance

 

Entertainment

 

Teens & Kids

 

Art & Creative

 

Garden & Home

 

Policies & Law

 

Shopping Online

 

People & Society

 

Main › Technology & Science › Engineering Science
 

How Radars & Radar Detectors Work

 
Author: Tim Robinson

What is a Radar?

Radar is an acronym for radio detection and ranging. The Average Radar contains a K-Band microwave RF (radio frequency) transmitter whose signal gets reflected by the target object. The reflected signal will have a Doppler shift proportional to the target speed.

This Doppler frequency shift is detected in the receiver, amplified, filtered, and then digitized in an analog-to-digital converter (ADC), and passed onto the digital signal processing (DSP) chip. Using complex algorithms, the DSP chip filters out false and low-level return signals to identify the speed of the desired target. The speed, along with various statistics and averages, is then displayed on the LCD.

How is speed calculated? Speed is calculated using the difference between the transmit frequency and receive frequency (also known as the Doppler shift).

How accurate are Radars?

The Average accurate to within +/-1 mph.

How does the user need to be positioned in relation to the moving object? The Average Radar works best when positioned in front of or behind the moving object.

Can radar guns determine the speed of an object moving in any direction ? No, Doppler radar can only determine the relative speed of targets moving either toward or away from the radar.

Does angle affect accuracy?

A 12-degree angle should not affect performance. The average Radar is accurate to within +/-1 mph for a baseball 75 feet away at an angle of 12 degrees or less. A 20-degree angle at 60 feet away would result in an accuracy of +/-3 mph.

The Radar detector only identifes a radar signal, while a Radar Detector a specially modulated field of light in front of the vehicle to muddle radar and laser gun readings.

These types of Radar Jammers are legal because they transmit light instead of radio frequencies to make your vehicle electronically invisible to police radar and laser guns.

Author Bio:
This article is excerpted from our new ebook "For Sale By Owner". To download your copy, visit ebooks.sagedot.com/fsbo.html The ebook includes sample legal forms and a seller checklist. Tim Robinson is the publisher of "For Sale By Owner".
You can search for this article using: genetic engineering, engineering jobs, mechanical engineering, electrical engineering
 
 
 

Related Articles

 
VoIP - A Closer Look at Choosing an Internet Phone Service
 
Beat The Kakuro Monster
 
Nokia N73: With Superb Imaging Capabilities
 
If you Want Cheap Voip Services Then Switch Over to Skype Voip
 
Choosing an Audio Conferencing Company
 
Defeating Crime With Digital Camera Cell Phones
 
Free DIRECTV DVR Receiver Guide
 
The World of Fiber Optics
 
Shining Some Light on Solar Energy
 
Latest Teleconferencing News You Can Use!
 
 
 
   Main :> Security & Privacy :> Terms & Conditions
© 2008 www.globehall.com All Rights Reserved.