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The Science Behind Portable GPS Systems And How You Can Use Them Too! by Edwardo Mascasas

The GPS or Global Positioning System is a "constellation" of 24 well-spaced satellites that orbit the Earth and make it possible for people with ground receivers to pinpoint their geographic location. The location accuracy is anywhere from 100 to 10 meters for most equipment. Accuracy can be pinpointed to within one (1) meter with special military-approved equipment. GPS equipment is widely used in science and has now become sufficiently low-cost so that almost anyone can own a GPS receiver.

The GPS is being used in science to provide data that has never been available before in the quantity and degree of accuracy that the GPS makes possible. Scientists are using the GPS to measure the movement of the arctic ice sheets, the Earth's tectonic plates, and volcanic activity.

GPS are much more applicable when they are eminently portable. Usually, when people refer to portable GPS units, they mean handheld units. Types of GPS devices such as these are most often for biking, hiking, camping, sailing, fishing, skiing and exploring in the untamed wilderness.

Portable Global positioning systems and accessories come in the forms of hand held units, antennas, wristwatches, bike mounts, fish finders, and more. Since nearly major GPS manufacturer makes portable units, a lot of people are demanding for serious, strong GPS units.

Portable GPS systems give user such data as longitude, latitude, altitude, speed, and distance to destination or next stopping point. Stopping points are called "waypoints," and they can be programmed into the GPS unit, as can a number of other points. There are a number of styles of portable GPS systems, so that everyone can find the model and the price that is just right for them.

Magellan, Garmin and Lowrance are among the top-quality major brands portable GPS systems. GPS systems are surprisingly affordable for the people who are looking into GPS technology for the first time. Even the most basic GPS unit offers a wealth of data to the user.

GPS units like maps are usually less comprehensive than those used for driving and boating. Topographical maps are the most useful maps for use in the wilderness which allow you to locate yourself within your immediate surroundings and navigate over rough terrain. However, not every unit comes with topographical maps. So if you want them, just make sure you buy a unit that includes them.

Wilderness GPS units are example of portable GPS units which is more or less accurate depending on their design and construction. Units that utilize differential GPS are far more accurate than those using standard GPS standard protocols. Also, units that use dual frequencies and kinematic (On-The-Fly), real-time, signal processing are more accurate than those using a single frequency and static, post-processing.

There are optional features in Wilderness GPS DEVICES that are less necessary for other applications but extraordinarily helpful for wilderness applications are included compasses, barometers, and altimeters. Some portable units can even receive weather forecasts so you will never be caught off guard by a sudden storm.

Furthermore, it is a device's ability to communicate with other receivers in the area to send emergency voice communications and the ability to communicate with other receivers in the area to send emergency voice communications and the ability to broadcast an emergency beacon should you find yourself cut off and distress.

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Article Source: http://www.earticlesonline.com/Article/The-Science-Behind-Portable-GPS-Systems-And-How-You-Can-Use-Them-Too-/47068

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BIKE FUJ CAMBRIDGE 09 $799 BIKE FUJ CAMBRIDGE 09.

HRM PLR BIKE MOUNT $8 HRM PLR BIKE MOUNT.

TransIt Soft Bike Case $49.99 TransIt Soft Bike Case. The TransIt Soft Bike Case is an easy, clean alternative for bike transport.

XPORT Bike Cover $59.99 XPORT Bike Cover. Shield your bike from the harmful effects of sun, rain and the elements with this full coverage polyurethane coated 210D nylon bike cover.

Adam's Trail A Bike Sleeve Hitch $17 Adam's Trail A Bike Sleeve Hitch. Part for Adam's Trail A Bike.

BIKE FUJ CONN 10 56 $649 BIKE FUJ CONN 10 56.

HRM PLR BIKE MOUNT OS $9.99 HRM PLR BIKE MOUNT OS.

BIKE EAS WARHAMMER 12 White $319.99 BIKE EAS WARHAMMER 12 White.

XPORT Universal Bike Mount $19.99 XPORT Universal Bike Mount. Transport your bike in any van, truck or SUV with this universal mount.

Keen Springwater Mountain Bike Shoes $99.99 Keen Springwater Mountain Bike Shoes. Get comfortable performance ON and OFF the bike in these Mountain Bike shoes from Keen.

XPORT Locking Upright Bike Mount $199 XPORT Locking Upright Bike Mount. This Locking Bike mount is a secure and stable way to transport your bike.

Ultra Light Bike Mirror $24.99 Ultra Light Bike Mirror. This Ultra Light Bike Mirror is designed for commuting, touring or just about anytime you need to increase your line of vision.

Ritchey Comp Mountain Bike Seatpost $49.99 Ritchey Comp Mountain Bike Seatpost. This mountain bike seatpost is lightweight and extremely functional!

Adidas Berm Mountain Bike Shoes $29.99 Adidas Berm Mountain Bike Shoes. These Mountain Bike shoes offer flat pedal performance and style.

Planet Bike Superflash Tail Light $24.99 Planet Bike Superflash Tail Light. Set the night on fire with this blazingly bright Planet Bike tail light.

2011 Team Bike Case $249.99 2011 Team Bike Case. The Team Bike Case is the compact, pro-level way to transport your ride. Tough construction with foam interior, webbing straps and plenty of security measures guarantee safe transit every time. Fits most bike frames and a set of wheels.

Nirve Brookhurst Commuter Bike $639.99 Nirve Brookhurst Commuter Bike. Add some Euro style to your bike commute with the Nirve Brookhurst commuter bike. This sharp-looking bike features a classically-styled, lugged chromoly frame with water bottle and rack mounts, Shimano 7-speed internal rear hub for smooth gear changes, alloy caliper brakes and easy-rolling 700c wheels that make commuting a breeze.

2011 Pro Bike Case $299.99 2011 Pro Bike Case. The Pro Bike Case is the ultimate in professional level transport. Heavy-duty construction, internal aluminum stabilizer frame and super-secure latches provide safe and reliable transport of your bike. Its molded shape even allows multiple cases to be stacked together for team events. Fits almost any bike frame, including large road bikes and full suspension mountain bikes, plus a set of wheels with extra room for your gear and tools.

Performance Bike Cap $14.99 Performance Bike Cap. The most comfortable and breathable sports hat you will ever wear.

Spin Doctor Bike Wash 22oz $9.99 Spin Doctor Bike Wash 22oz. Give your bike a bath and let it shine! Spin Doctor Bike Wash is a bio-friendly cleaner that easily washes away dirt and road grime to keep your bike looking its best and feeling loved.

Shimano SH-M086L Mountain Bike Shoes $89.99 Shimano SH-M086L Mountain Bike Shoes. Whatever your off-road cycling pleasure, these Shimano Mountain Bike shoes will keep you comfortable through and through.

Shimano SH-MT31 Mountain Bike Shoes $29.99 Shimano SH-MT31 Mountain Bike Shoes. These mountain bike shoes are designed for a wide range of riding styles such as commuting, touring or casual off-road cycling.

Shimano SH-MT60 Mountain Bike Shoes $99.99 Shimano SH-MT60 Mountain Bike Shoes. On-road commute or off-road escapade, these Mountain Bike shoes handle any cycling adventure you put in their path.

Fort Traverse Mountain Bike Shoes $39.99 Fort Traverse Mountain Bike Shoes. Urban style meets rugged good looks in these Mountain Bike shoes built for road, trail or indoor cycling.

Geax Street Runner Mountain Bike Tire $22.99 Geax Street Runner Mountain Bike Tire. Run the streets on your mountain bike with the Geax Street Runner Bike Tire, also great for the trainer.

BIKE EAS LOWDOWN 116 12 Black $239.99 BIKE EAS LOWDOWN 116 12 Black.

BIKE EAS LOWDOWN 120 12 Black $269.99 BIKE EAS LOWDOWN 120 12 Black.

BIKE GTB TRAFFIC 3.0 11 Black Large $499.99 BIKE GTB TRAFFIC 3.0 11 Black Large.

BIKE GTB TRAFFIC 3.0 11 Black Xlarge $499.99 BIKE GTB TRAFFIC 3.0 11 Black Xlarge.

BIKE COL SMU CRSR LADY Blue $279.99 BIKE COL SMU CRSR LADY Blue.

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