Handheld GPS units are a hikers best friend. Any hiker knows that being able to find your way around, especially in wilderness areas, is important. Hikers also know two of the deterrents to hiking in the wilderness are how to find the head trail and then how not to get lost during the hike. A handheld GPS unit can give people the freedom to explore the experience hiking in the wilderness areas that they have not attempted before.
A typical handheld GPS unit is powered by standard batteries and is 2 to 3 inches wide and 4 to 6 inches long. These handheld GPS units have a small screen which shows an icon representing your current location and pre-plotted locations. Various models also have maps showing roads and streams, topography, etc.
Handheld GPS units which can be used for hiking in the wilderness, use satellites orbiting over 12,000 miles above the earth to determine the position of the handheld GPS unit on the ground. It does this by using travel times to the handheld GPS unit’s signals being emitted from some of the 24 Navstar satellites. Consumer grade handheld GPS units need to receive signals from at least three of these satellites to calculate your “XY” or map coordinated position. At least four of these satellites are needed to also calculate your altitude.
There are several physical elements which may prevent a handheld GPS unit from receiving a satellittes signals. Mountains, canyon walls, high metropolitan buildings, and dense forest growth can limit the number of low in the sky satellites that are visible and therefore useable by the handheld GPS unit.
Once a handheld GPS unit has a location fixed in it, here’s what it may do for you while you are hiking in the wilderness.
1. Waypoints: A waypoint is a single point location. It can be saved in the handheld GPS unit’s memory. As you are hiking in the wilderness you can see your current position in relation to the point you want to go to. Waypoints may be created and saved in the handheld GPS unit’s memory before leaving for your trip or while you are in the field exploring. Sometimes a series of waypoints are sequentially linked to form a route.
2. Routes: A route is a series of locations that are linked in sequence to describe a path along which you intend to hike in the wilderness. The maximum number of positions that can go into a route varies depending on the type and model handheld GPS unit you have.
3. Tracks: A track is essentially a route that is made up of many linked sequential locations which a handheld GPS unit automatically creates and saves as you hike in the wilderness. This is analogous with leaving markers along a trail, so you can retrace your path that your came in on while hiking in the wilderness. This helps the hiker avoid getting lost while enjoying and exploring in the wilderness.
Waypoints, routes, and tracks are the three principal categories of locations that are fixed by a hiker in a handheld GPS unit. An understanding of these three basic categories gives the hiker insight into how a handheld GPS unit can help one navigate and explore safely while hiking in the wilderness. It can be used to preplan trips and to guide the hiker along their from their start to the destination and back again. A handheld GPS unit is ideal for the hiker to track and show them where they are going, where they have been and to reverse the course and return the hiker safely to their starting point.
By: Beth Appel
Posts Tagged ‘Deterrents’
What Can A GPS Handheld Unit Do For The Hiker?
January 12th, 2010Auto Security Systems – Deterrent Against Theft
November 5th, 2009
There are several ways for you to prevent your car from being stolen. Most anti theft devices will claim to be superior to all others. However, vehicle security devices are not the only way to protect your car. Auto security systems are one part of the system through which you can prevent theft.
Common sense is by far the best, and most effective method, to deter vehicle theft. The first thing that common sense demands is to make sure that you don’t leave your keys in the car, and don’t attempt to hide the key either. Secondly, always use your door locks, and make sure that you roll up the windows. Finally, make certain that you park your car in a safe place, and one that is well lit. When you make things more difficult for a thief, they are more likely to pass on your vehicle and move to an easier target.
It may not make a big difference which auto security system you select, because any of them will be a good deterrent against thieves trying to steal your car. Don’t worry too much about their makers’ claims. Whichever system that you buy needs to fit your needs and those of your car, and you need to use that system consistently to maximize its effectiveness.
GPS tracking devices can help police locate your vehicle if it has been stolen, and are difficult for thieves to deactivate. For this reason, they can act as deterrent devices, simply because they make it so easy for police to recover your vehicle. To make effective deterrents, just make sure that you use a window sticker or some other means to clearly identify your automobile as being armed with a GPS tracking device.
A subtle way to deter car thieves is etching your car’s VIN number into the glass, which will allow car parts to be tracked if your car is stolen and then broken up into parts for sale. Thieves who see these numbers will decide to try stealing another car instead.
Some vehicles are stolen more often than others. The list of cars that are stolen most often are listed in a number of car magazines. If you are in the market for a new vehicle you may want to consult these magazines before purchasing a car. Whether these vehicles have an auto security system or not they may be targets for thieves.
By: Brad Seabourne
