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.



Global Positioning Systems have become the darling of many young, technically savvy individuals. These devices have proven their worth in a wide variety of circumstances. Visit your nearest electronics shop and you will see them in every imaginable size, shape and color.

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.

Search around the Web and the local merchants for some GPS brands, and ask their staff which are the most popular ones. After you have got a general idea, you could compare the price, quality and options amongst the popular brands. Note down and pick out the most appealing five or less. Go to the internet and check out what reviewers and other users feel about these brands and the ratings they give; you could even solicit advice from other users in online forums. You should also ask for recommendations from trusted users of GPS systems such as relatives, friends and coworkers.