Where Am I?

Introduction to GPS Systems

Well, here is something you can thank the U.S. Department of Defense for: GPS. This system took 12 billion dollars to develop and was originally created for the military, so they could fix precise targets overseas. Originally named NAVSTAR (Navigation System with Timing and Ranging), GPS systems only entered the mainstream with the past few years and have now found their way into cars, boats and a number of other devices, including the hands of some backpackers. Most GPS systems range from $100 USD to $700 USD.

What is it? What does it do?

GPS stands for Global Positioning System. In non-tech speak, GPS is a device that lets you know exactly where you are. GPS devices figure out latitude and longitude through a set of signals and receivers, satellites and computers. There are 24 satellites and a number of ground stations. The process that used to figure out your location is called trilateration, although many incorrectly refer to it as triangulation, although there are no angles involved.

Hand-held GPS systems are generally used by backpackers who do extensive hiking, trekking, climbing or rustic outdoors activity. However, GPS is used for more than just determining location: it is used in the fields of mineral exploration, wildlife management, cartography and forestry.

Why You Should Bring a GPS System

• Extreme outdoor activity: The number one reason to bring a GPS is the simple fact that if you will be completing any intense outdoor activity, it's a lot safer to have one. GPS systems are used to guarantee that you will never be lost in the depths of the jungle or the vast expanses of the desert.

• Tech-geek: For the rest of us that won't be trekking through the Sahara, the best reason to bring a GPS is that, well, you're a tech dork. GPS devices are cool little toys. You can mark your favorite routes, figure out how far away you are from home and even get directions to the restaurant. Dave Rogers also touches on this subject.

Why You Should Not Bring a GPS System

• Not needed: Guess what? If you don't have any plans to climb a mountain or go trekking alone, there is no reason to have a GPS system. It's another expensive toy that would take up space in your bag.

• Illegal: Even if you do decide to bring your system, make sure that it is legal to have one where you are going! As Ken Cochrane points out, GPS systems are still advanced technology in many non-Western countries and may be regarded suspiciously. Russia is one example where GPS systems are illegal.

So, Boots crew, do I take it?

BnA Seez: It's cool, but...sorry. Best to leave the nifty little gadget back at home.

Recommended Devices

• Garmin eTrex GPS with Waterproof Exterior (Yellow)
• Garmin eTrex Vista 24 MB GPS with Compass, Altimeter, and PC Cable
• Magellan Meridian Gold Handheld GPS Receiver with Waterproof Exterior

Article added on March 01, 2005

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