How gps receivers work
| Added: 02-04-2007 Author: Andrew Bicknell Category: Global Positioning System |
← Back | ↓ Related | Home → |
A GPS receiver is an electronic device that uses Global Positioning System to determine the exact location on earth and the pin-point accuracy. The system is composed of three parts; 27 satellites that transmit signals continuously position, the ground stations around the world who helps synchronize the satellites, and various types of GPS receiver.
In this article we will go back to concentrate on how the GPS receiver into the work since the system part of the puzzle that GPS that makes you fall. Its main job is to calculate its position on land use which receives signals from the satellite system.
To do this needs to lock the receiver signal at least 3 satellites. 3 or more satellites later deemed necessary to determine the distance between the satellite and the distance between itself and each satellite. Then use the basic principles of mathematics of triangulation or trilateration to calculate its location on the surface of the earth.
Signals the GPS receiver uses the location data signals are transmitted sexually and satellite radio. These radio signals have three bits of information embedded in the ephemeris data, data Almanac, and pseudorandom codes. By using this information the GPS unit can triangulate the position and reports that users are behind him.
Accuracy is another question many first time users wondering about. The good news is that accurate GPS receiver and your ability to pin-point the location to within 20 meters radius. There are several ways to increase accuracy by using DGPS (Differential GPS) and AAS (Wide Is Augmentation System) which you can get accuracy to within 3 meters. Units usually two articles, but more accurate cost increases may also be worth the cost.
There are many reasons that can and does affect how the GPS units report their position accurately. These include:
1. Number of satellites visible
2. Signal resulting in delays as they passed through Earth's atmosphere
3. Signaler bouncing off things
4. Clock accuracy in GPS units
5. Ephemeris errors
6. The poor satellite positions
7. Satellite signal is blocked because of features or man-made theme
GPS is a technology that is available through the use of a lot every day. Depending on your need to track where you are sure that the GPS receiver that fit the bill.
Link to this article:
Related articles
The phone number to help trace the cell networks
Publish: 07-07-2009 | author: Jesse Alexander
German phone networks
Publish: 16-02-2010 | author: Caroline Telford
Three - the uk's first 3g network
Publish: 08-04-2011 | author: Caroline Telford
Advantages of best dish network internet deals
Publish: 18-11-2004 | author: Kary Rosario
Use network resources and find new people
Publish: 09-02-2011 | author: Rob Fellowman
How does hdtv work?
Publish: 06-10-2011 | author: Mike Singh
Video conferencing – it finally works
Publish: 27-02-2010 | author: Harold German