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Saturday, February 28, 2009

Cell Phone GPS Tracking

The development of communications technology has long since surpassed the sole ability to access others when they are mobile. Today, mobile communication devices are becoming much more technologically advanced and offer more than the ability to just carry on a conversation. Cell phone GPS tracking is one of those advances. GPS or Global Positioning System tracks your location by interpreting the data received from 3 or more satellites. This has made GPS a popular feature in cars as a navigational aid.

All cell phones constantly broadcast a radio signal, even when not on a call. The cell phone companies have been able to estimate the location of a cell phone for many years using triangulation information from the towers receiving the signal. However, the introduction of GPS technology into cell phones has meant that cell phone GPS tracking now makes this information a lot more accurate. With GPS technology now more commonplace in many new cell phones, this means that the location of anyone carrying a compatible cell phone can be accurately tracked at any time. Cell phone GPS tracking can therefore be a useful feature for business owners and fleet managers who need to be able to keep track of their vehicle movements. Cell phone GPS tracking can also be a useful feature to the emergency services or police when responding to a 911 call from a GPS cell phone. For this reason, the FCC has legislated that wireless networks provide location information for 911 calls made from cell phones. These are known as E911 calls.

As technology advance even further, future features will be even more powerful. Imagine GPS cell phones used as a navigational device. Based on the cell phone GPS tracking signal, they could be used to find your way to a location, calculate your speed based on your location change over time, from this calculate your estimated arrival time, suggest an alternative route and even phone the person you are calling to see with your ETA! Of course in car GPS navigation systems can already perform many of these tasks; however it is the portability of cell phones that makes them so useful for this technology. Cell phone GPS tracking could also be used to locate the whereabouts of your children and offer protection to elderly relatives should something happen and they need urgent assistance. These features will help to secure the future of cell phone GPS tracking providing advantages for all. For more information on cell phone GPS tracking and other GPS products visit www.satnav-gps.info today.

Article Source: http://www.themobiletracker.com/hindi/tracking.html

Global Positioning System (GPS) : A Complete Review

The system of knowing one's exact position on this earth is known as the 'Global Positioning System'. Precise positioning of any location can easily be done with the help of this System. If anyone has a Global Positioning System receiver and if the sky remains clear then no one is going to be lost on this Earth. The receiver is a pocket-sized gadget that makes us inform about our exact position on this earth at any moment. One thing is that this pocket-sized gadget or receiver is very expensive and it also involves a lot of technical ingenuity. The primary function of Global Positioning System is the navigation in three dimensions. The Navigation receivers are used for aircraft, ships, and ground vehicles and sometimes it is also carried in hands by individual.


The working of the System
The GP System provides some special satellite signals which is processed in the receiver. These GPS receivers not only track the exact location but can also compute velocity and time. The positions can even be computed in three dimensional views with the help of four GPS satellite signals. The Space Segment of the Global Positioning System consists of 27 Earth-orbiting GPS satellites. There are 24 operational and 3 extra (in case one fails) GPS satellites. These satellites move round the Earth in 12 hours and send radio signals from space that is being received by the GPS receiver. The control of the Positioning System consists of different tracking stations that are located across the world. These monitoring stations help in tracking signals from those GPS satellites that are continuously orbiting the earth. The Space Vehicles transmit microwave carrier signals. The users of the Global Positioning System have GPS receivers that can convert the satellite signals by which one can estimate the actual position, velocity and time. Four satellites are required to track the three dimensional location and time. The operation of the system is based on a simple mathematical principle called Trilateration. The Trilateration may be of two types i.e. 2-D Trilateration and 3-D Trilateration. In order to make the simple mathematical calculation the GPS receiver should know two things. Firstly the location of the place is to be traced by at least three satellites above the place. Second is the distance between the place and each of those Space Vehicles. Units those have multiple receivers can pick up signals from several GPS satellites at a same time. These radio waves are electromagnetic energy that travels at the speed of light.


OverviewGPS is specially a Satellite Navigation System that helps in tracking the exact location with the help of satellites. The Global Positioning System is mainly funded and controlled by the U.S Department of Defense (DOD). The system was initially designed for the operation of U. S. military. But today, there are also many civil users of GPS across the whole world. The civil users are allowed to use the Standard Positioning Service without any kind of charge or restrictions.


Tyson J Stevenson creates useful articles & reviews on a wide variety of everyday subjects. Expect to see his name often. View further samples of his work at My Adjustable Bed & Adjustable Beds.


Article Source: http://www.themobiletracker.com/hindi/gps.html

GPS - Reduce unauthorized mileage in your company fleet and track your assets.

Global Positioning System - GPS - devices have become everyday items to many of us as their cost has fallen. These devices communicate with geostationary satellites, which tell the device, exactly where on Earth it is. The potential applications for this knowledge are endless. If you know where you are, where you were and the time in between then you know your speed exactly. If you know where you are then others do too.


GPS systems can be installed in cell phones as well as satellite phones. Sportsmen and women can use GPS devices to calculate how far they have run or paddled their current speed and average speed. Increasingly companies are fitting them in their vehicles. Trucks may be carrying $500,000 worth of goods, so it's worth installing a GPS system so you know where it is. A similar system is sold as a theft deterrent to private drivers. Other companies are fitting a system that interfaces with the engine management computer on vehicles in their company fleet. As a driver goes out of a predefined area, the engine power drops and continues to drop the further outside the designated area the vehicle is. The system soon pays for itself in reduced levels of unauthorized mileages.


GPS devices are now so miniaturized that they can be worn on the wrist, like a watch. GPS navigation systems are commonly fitted in trucks and delivery vans. The built in software interprets the GPS information into a series of spoken commands, like "Turn Left" or "You've missed the turning, take the next right and turn around". A GPS system means that courier companies can achieve faster deadlines because drivers never get lost. If you would like to find more about using GPS to reduce your fleet management costs then visit this GPS System site. To research other logistics solutions try visiting this logistics site.

Article Source: http://www.themobiletracker.com/hindi/company-benefits.html

GPS - Know Your Exact Position Anywhere In the World

GPS [global positioning system] is a worldwide radio-navigation system formed from the constellation of 24 satellites and their ground stations. It is a system mainly used to locate the user's position at a time. Although GPS was originally intended for military applications, but now it is mainly used in marine, location-based services and terrestrial navigation. GPS can work for 24 hours in any type of weather condition, irrespective of sun and rain. Working of GPS system GPS works in a wonderful way. The GPS satellite circles the earth twice a day in a precise orbit and transmits signal information to earth. GPS receivers take into this information and use 'triangulation method' to calculate the user's exact location. The meaning of 'triangulation' is receiving radio signals from a distance. Along with knowing the distance, you also need to know exactly the position of the satellites in space. This is done with the help of high orbits and carefully monitoring the instruments for locating the satellites. Finally you also need to correct any type of delays that the signal can experience as it has to travel for a long distance through the atmosphere.


Importance of GPS system
GPS is important as it helps you to figure out where you are and where you are going when you are traveling from one place to another. Navigation and positioning are important but cumbersome activities, which GPS makes it easier. Once GPS locates your position, and then it starts tracing other factors like speed, bearing, tracks, trip distance, sunrise/sunset time, distance to destination and several other details. GPS uses 'man-made' stars as reference points to calculate positions accurate to a matter of meters. However, with recent forms of GPS you can make measurements much better than centimeter readings. So it is with the aid of GPS that you can give a unique and specified address to every square meter on the planet. You can get GPS services without any subscription fees and set up charges. So these days GPS finds its way into cars, planes, boats, construction equipments, farm machinery, laptop computers and movie making gears.


Modern GPS systems
With the world advancing rapidly every day, there are recently discovered Newer Garmin GPS receivers with WAAS [Wide Area Augmentation System] that can improve the quality and accuracy of location of any one at any time. Although no additional equipment is required, yet users get the advantage of Differential GPS [DGPS] to get correct signals within the distance of three to five meters. So use GPS systems to get the maximum benefits of modern technology. Sharon Albright is the owner of GPS Site. Read more articles on GPS and visit her recommended resources.
Article Source: http://www.themobiletracker.com/hindi/what-is-gps.html

GPS Overload - How to Choose the Perfect Device for Your Needs

Buying a Global Positioning System (GPS) to meet your needs may not be as simple as one might think. There are a myriad of different devices, for many different purposes. The first thing to consider when buying a GPS device is its primary use. Will you be using it on the road, on the trail, or on the water? On the road devices are usually temporary mounted in the vehicle with suction cups or bean bags. Most of these devices have turn-by-turn instructions and auto correction if you miss a turn. We recommend getting a device with the auto-correction feature, that way you don't have to mess with the device if you take a wrong turn, it will recalculate the route for you automatically. There are some devices that are also portable, so you can unplug them from your vehicle and take them with you as you walk around in a large city.


My favorite in this category is the Garmin c330, c340, and c530 series. They are a wonderful size for using it in the vehicle and small enough to use as a portable. They have city maps pre-loaded, so they are not much use off-road. Many of the newest designs have built in picture viewers, MP3 players, traffic updates (careful, that usually costs extra!!), and many other bells and whistles. One of the best features of the Garmin c-series line is the ability to ask for the closest landmarks, such as food, gas, shopping, golf courses, etc. Like anything you buy, make sure you understand what the device has and what you want to use for before making the final decision! One of the most asked questions is should I buy the car with GPS already in it? Personally, I don't like that option because it limits how you can upgrade, and the device cannot be used in multiple vehicles. In addition, some car manufacturers are charging several hundred dollars to update the map data on these devices and you have little choice in using them to do this. The GPS market is an ever changing market and I like to be in control of which device I want to purchase.


Having said that, I am choosing to have a device mounted to my dash or windshield (suction cups....also illegal in some states, so make sure you know which ones!!!) with wires trailing to the power source. On the trail devices are handhelds which depict topographical or basic mapping data, not detailed street level details. These are great for hiking and geocaching. They have the ability to either import or download coordinates of a location (called waypoints) and then tell you how close you are to that waypoint. Ever fear of getting lost hiking, well, you can set different points as you walk, like a breadcrumb trail so you can get yourself out the way you came in. These devices range from $80-$500+ depending on the different capabilities of the device. Higher end models allow you to buy pre-loaded map detail on memory cards, so they can double as driving directions, however, they still don't have the turn-by-turn capabilities. GPS devices used on the water are fixed mount devices. These devices can have water depth, temperature, etc, especially helpful for the fisherman. Maps that can be downloaded can have tidal waters, known shipwrecks, ports, and are very detailed. There is a huge range of devices to consider in this area. Keep in mind that mapping software used on these devices changes about 1-2 times per year. Less frequently for the maps on the water. Understand what your devices downloading capabilities are so you don't get stuck with outdated maps forever! Be aware that maps change, you have to be somewhat flexible when following the directions. I have had instances where it tells you to "turn left here", only to have that be the wrong way on a one-way street!!! In other words, these are guides to get you close to where you need to be, you cannot use them as gospel....common sense should prevail! Ty Thomas is a self proclaimed techno-nut who just has to have the latest gadgets. You can check out the latest gadgets at 4Runner Sports.


Article Source: - http://www.themobiletracker.com/hindi/gps-devices.html