GPS navigation systems are navigation and accurate positioning devices. Created by the Department of Defense in the early 1970s, GPS was primarily created to assist soldiers and military vehicles, ships and planes in precisely establishing their positions anywhere in the world. These days, the purposes of GPS navigation systems are both scientific and commercial. In the commercial world, GPS is utilized as a navigation and locating device in boats, airplanes and other vehicles. It is also extremely useful for hiking, kayaking and fishing. In the scientific world, GPS is quite essential in earth sciences. Meteorologists utilize it for weather forecasting and global climate studies. Geologists can also utilize GPS navigation when studying earthquake events and potential activities.

GPS navigation systems are now being used by more and more civilians. They have proven to be extremely useful in many different situations. They now come in several different designs, functions and features.

You have no doubt heard of in-car GPS systems and portable directional devices, but how do you chose which one to use? Pricing is one of the most obvious differences between the two options. Portable GPS devices that can be used in more than one vehicle are usually less expensive than built-in models. One portable GPS system, the Garmin Nuvi 350, has most of the same features of other in-car systems, and is in the $200 range. If you must have the latest extras, such as Bluetooth capabilities, the Garmin Nuvi can accommodate you if you are willing to spend a little more. The Garmin Nuvi 350 model employs NAVTEQ mapping features in addition to carrying a relatively low price tag.

When you are first searching for a GPS system, the variety of prices, features and brands available can make it more confusing, especially for a novice; in fact, there are probably hundreds of models available today, ranging in price from $150 to $900 or more. During your search, you must know what options are available; do you want a regular system that is good simply for travel, or do you want something more sophisticated with added bells and whistles? For something basic, the cost shouldn't go above $500, as a rule.

Go onto the Internet and visit your local shops to check out different GPS brands. Ask the salesclerks which systems are the most popular. After you have learned about the different popular GPS systems, you should check into the cost, quality and different options. Narrow your top brands to about 5 or less. Online, look for reviews and ratings for those models. After you read what other buyers have to say, you will have an ideal about choosing a certain model or not. You can also so to online forums for more information. Make sure you get your GPS system recommendations from trustworthy people, such as family, friends and colleagues.