GPS for Hiking & Autos

GPS can enhance safety when used properly.

Developed by the U.S. Defense Department in 1973, Global Positioning System units can quickly chart the fastest route to your destination. GPS devices can be used as a navigation and positioning tool for cars and during outdoor recreation, such as while hiking.

How GPS Works

GPS is a three-part system initially developed by the Pentagon so soldiers could find their locations anywhere in the world. The first part is 24 satellites on 12-hour orbits 12,428 miles above Earth. The second is a ground station with a receiver and antenna. The third is the data center, which controls and monitors the ground stations along with retrieving and analyzing the data to determine latitude, longitude and height.

Handheld GPS

Handheld GPS units come in two types: mapping and non-mapping. The first includes base maps and can map hiking trails or other routes for you. You also can upload trails or maps from your computer. The second is better for finding your car after the hike. Battery life also is consideration.

Automotive GPS

GPS helps when traveling in unfamiliar cities or country roads.

Automotive GPS units help when traveling along country roads or through unfamiliar cities, guiding you with maps and voice prompts. Most GPS units for cars already have road maps installed. Features to consider include screen size, traffic notification features and Bluetooth compatibility. A mounting bracket allows a handheld GPS to be used in a car, motorcycle, bicycle or boat, except that it won't have the soothing computer-generated voice giving you directions.

GPS Accessories

GPS units have numerous accessories, such as cases, antennas, mounting brackets, cables, mounting brackets, memory cards and weather receivers.

Using Common Sense

Operating GPS units require the use of common sense. Construction projects or other road changes might not show up on your unit. A Nov. 4, 2007, New York Times story quoted Westchester County Police spokesman Kieran O'Leary as saying, "We hear from drivers all the time that they were just following the GPS and the next thing they knew, they hit an overpass."

References

• Consumer Reports: Handheld GPS Hiking Devices
• The Southern California Integrated GPS Network: What Is GPS?
• GPS-Planet: Which is the Best GPS Unit?
• "The New York Times"; When the Long Haul Truck Hits A Bridge
• GPS-Planet: Accessories

Resources

• Desert Survivors: Tips and Techniques For GPS Usage in the Desert