Get your geographer a GPS system for Christmas

Only a few shopping days left before christmas to get that GPS unit for your car or [tag]geocaching[/tag]. Here are some of the best which can shipped in time to make your holiday’s perfect. Below is not only a list of GPS solutions, but an overview on how to choose:

How to Choose a GPS?

In order to guide you on how to choose a GPS, we will start with the various categories available. This guide applies to consumer users - GPS is utilized for commercial applications as well as consumer needs, and because those commercial uses can get quite specialized we do not address them here.

Basic [tag]handheld GPS[/tag] receivers - These are going to be the least expensive choices for GPS - often less than $100 US. Basic receivers are as accurate as more expensive units, they just don’t have as many features. The main feature they lack is mapping capability. Here is a list of what most basic receivers display/have:

• Location, usually in the format of your choice.
• Compass heading.
• Elevation above sea level, although elevation accuracy is not as good as position accuracy.
• Satellite location and signal strength.
• The ability to calculate [tag]distance traveled[/tag].
• The ability to record your path as a set of [tag]waypoints[/tag].
• The ability to navigate routes.
• The ability to retrace your steps.

Handheld mapping GPS receivers - These units display pre-loaded maps and/or maps uploaded from a PC. Map detail is reflected by the size and resolution of the screen. This means that mapping units are generally larger than basic units. Although mapping units are more expensive than basic units, the increase in cost is not all that much.

Automotive - These are larger than handhelds in order to accommodate a screen large enough to be seen while driving. They are powered by the car’s electrical system and because of this, they can only be used in a vehicle. Automotive units usually have voice instructions to allow you to navigate without taking your eyes off the road.