What You Need to Know About GPS

What It Is and How It Works – For the uninitiated, GPS stands for Global Positioning System. It’s a method of finding a receiver anywhere on earth or in orbit, and it’s probably one of the most important inventions of the 20th century. GPS can be used in so many varied ways that new technologies are constantly being developed and improved in order to take advantage of it. Now why is GPS so important and useful? First, we have to understand how it works.

In order to work, a satellite network orbiting the earth is used. These satellites each broadcast a specific signal, which is received by inexpensive aerials and passed on to GPS devices where it is then decoded and used by dedicated software. The information is specific enough that the GPS software can identify the satellite, it’s location in space, and calculate the time that the signal took to travel from the satellite to the GPS receiver. Using different signals from different satellites, the GPS software can now analyze the position of the receiver, in terms of latitude and longitude.

Mapping It Out – Even getting the information about the receiver’s location will be useless without something to compare it with. The mapping part of any GPS software is very important; it is how GPS works our possible routes, and allows the user to plan trips in advance. In fact, it is often the mapping data which elevates the price of the GPS solution. This should be updated regularly and frequently in order to be accurate.

There are several kinds of maps, and each is intended for different users with different needs. Road users, for example, require that their mapping data contains accurate information about the road network in the region that they will be traveling in, but will not require detailed information about the lie of the land. On the other hand, hiking GPS users might wish to have a detailed map of the terrain, rivers, hills and so forth, and perhaps tracks and trails, but not roads. Marine users need very specific information relating to the sea bed, navigable channels, and other pieces of maritime data that enables them to navigate safely.

And what about fishermen? They also use marine GPS to keep track of the movements of fish in real time and to predict where they’ll be the next day. In fact, cooperative fishing has become much easier with GPS, allowing boats to relay locations to each other while looking for the best fishing spots. There are also GPS devices called “fish finders”, which combines GPS and sonar functions to track and store detailed fishing and maritime information.

Get Started with GPS – Consumers can avail of several GPS devices that are specifically designed for a variety of uses and functions. Sophisticated in-car GPS systems, which feature voice guiding, powerful dynamic route calculation, and the possibility to update the map from a CD, are now available. Then there are handheld GPS devices, such as those from Magellan and Garmin, which store a map inside, and are usually designed for outdoor use. They generally do not have any road information, and leave the users to find their own way from A to B.

Recently, PDAs and even a few sophisticated mobile phones have incorporated GPS technology into their own systems. A GPS receiver can be easily attached to these devices, which makes them possibly the cheapest and easiest GPS receivers to use in the market today. Bluetooth technology has also started to make use of GPS, using a single PDA device wirelessly connected to several receivers.

Article Source: http://www.articlesinsight.com

Chiun Masters is a researcher and writer working for www.audioavi.com, where you can get quality GPS and audio equipment. Visit us for all your audio equipment needs.

Please Rate this Article

Not yet Rated

Click the XML Icon Above to Receive Computers Articles Via RSS!

Additional Articles From - Home | Computers

	Print This Article
	Post Comment
	Add To Favorites
	Email to Friends
	Ezine Ready

Member Login
Submit Articles
Top Authors
Most Popular Articles
Submission Guidelines
Article RSS Feeds

New Stuff
About Us
Site Blog
Links
Link to Us
Contact Us
Privacy Policy
Terms of Service
Sitemap

articlesinsight.com » Copyright © 2006
Links | Terms of Service | Submission Guidelines | Contact Us | Improve google rankings| Privacy Policy | About Us