GPS receivers have become hugely popular. They are quite frequently used in vehicles. However what many people do not realize is the fact that GPs has become highly useful for the outdoorsman.

In order to understand its importance, we must know what GPS actually is. GPS or Global positioning system was developed by the US military. It's a navigation system and it has a number of satellites (24) that move round the earth. They can give the exact location of any object on earth with the help of GPS receivers. It was made available for use in the private sector in the 1980's. It is bound to become the new utility just like the mobile phones.

Different automobiles may have different GPS in them. Usually GPS devices used in car provide turn by turn directions. However GPS devices designed by enthusiast will give distances and locations between two locations. It will also give plotting or charting capabilities. Some may also have additional features. You must be very careful when you are selecting GPS for outdoor activities. Choose the one which is specific for your activity.

Fisherman or sailor can go for GPS which have charting capabilities, fish finders and depth sounders in them. GPS is also good for boating enthusiast. It will protect them from getting lost and it will also serve many other functions. Fish locations can be found using the GPS.

GPS devices are also very helpful for long distance runner, hikers or for people who go camping. You will need to carry the GPS yourself in such adventurous. You thus need to consider its size and before you buy it. Your device must be weatherproof. Go for a system that has large number of channels. Minimum 12 channels are required for outdoor purposes. GPS works on the theory of triangulation and thus your device won't be able to locate the position if it cannot communicate with the satellites.

Multiple channels will make sure that your system connects with the satellites even if the signals are weak or blocked. Your system must also have Wide Area Augmentation System or WAAS. This will help in increasing the accuracy of your system. Features like topographical mapping and backtracking should also be present.

The television and newspapers are full with news of people getting lost in remote areas. Finding such people is a lot easier with the help of GPS devices. You should not indulge into wilderness until and unless you have the GPS device.