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GPS Systems

November 7th, 2007    Subscribe To Our Feed

A GPS or Global Positioning System is a collection of two dozen satellites, which revolve around the earth. It is used to determine the location of a reciever on earth.This is done by sending radio signals to the electronic GPS recievers from the satellites. Every satellite has a reciever on earth. These signals contain data on the location of the satellites and the time taken for signal transmission. The satellites are placed twelve thousand miles above the surface of earth and complete 2 orbits every day. The functions of the satellites are periodically checked on and new ones are sent to replace the old ones.

With the improvement in technology, accuracy has increased. GPS systems have become more affordable as compared to earlier times. Accuracy differs depending on various factors. Sometimes it can even be as good as a few meters. The GPS systems can be used in a large number of areas. Further, decreases in costs have increased the number of users. Fishermen and hikers can use portable GPS to navigate in the wild. Cars are being equipped with GPS systems, which give drivers better navigation abilities and better protection against theft. It is used by the military to guide cruise missiles to pre-specified targets. Personal hand held devices like wrist watches are equipped with GPS to help in tracking people out and getting their exact location.

The system was developed by the Department of Defense of the US. It was initially named NAVSTAR GPS. Of the twenty-four satellites, the first one was launched in 1974 and the last in 1994. The Department of Defense switched off selective availability (SA) on 2 May 2000. The selective availability had been a cause for less accurate readings. The department reserves the right to turn it back on when they see the need to do so. The GPS systems are now about 10 times more accurate than they were when selective availability had been active.

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GPS Tracking

November 5th, 2007    Subscribe To Our Feed

Global Positioning Systems or GPS are satellite navigational systems made-up of 24 satellites revolving round the earth. Each satellite has a corresponding receiver on the earth. The satellites orbit the earth at a height of about 12,000 miles. It makes two complete orbits everyday. The GPS satellites continuously transmit digital radio signals that contain data on the location of the satellites and the time taken for signal transmission.

GPS tracking is the term given to the process of being able to locate the exact location of a receiver on earth. Now that the production cost of GPS technology is significantly lower than when it first came into existence, many companies have found new ways to make use of this technology. In GPS tracking, the user is able to keep a track of where they have been using a portable GPS device. GPS tracking can be used in a better way when it is combined with other broadcast technologies, such as a wristwatch or radio. GPS watches, for example, can be fitted with a GPS receiver, which relays a signal to a central command center equipped with GPS software systems. The central command center can track the position of the watch and transmit that information to a third party. That third party may be anyone who needs the position of the wearer urgently. In fact, a variety of such GPS phones and wristbands are sold in the market today. This serves two purposes. Firstly, it provides the driver with an integrated GPS system, without the necessity to purchase a car navigation system, or a PDA-based GPS system. It also offers the possibility to relay that information via a radio or cell phone transmitter.

GPS systems have been used primarily as vehicle locators, especially in cases when a vehicle attached with such a system is stolen. The police, once informed, can find out from the control center where the vehicle is, and proceed to track it down. Tracking is also being used in other fields such as pet tracking, coordinated tracking and consumer tracking.

GPS provides detailed information on GPS, GPS Tracking, Handheld GPS, GPS Systems and more. GPS is affiliated with Free Cell Phone Number Search.

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Many Different Uses Of a Laptop GPS

July 16th, 2007    Subscribe To Our Feed

You get more versatility with a laptop GPS as compared to other GPS systems, so in many situations it is more convenient.  The following is five different situations where a laptop GPS can be extremely handy.

Business Travel - Regardless of what you travel on automobiles, trains or planes, you have the ability to take your laptop GPS right along with you just as if you were using a handheld GPS unit.  If your plane is delayed, or if your schedule changes, or there is an emergency and you need to be in a different place than the quickest way possible, you laptop GPS will give you the ability to locate where you are at that time, and how to get in the fastest possible way to where you want to be.

Suppose, for instance, that you are on your way home for Christmas in a plane that is headed for Chicago.  Suppose your plane has to make an emergency landing in a field in the middle of Montana.  Now, the middle of Montana is a very big place to be, and it’s a long way from anywhere else.  With your laptop GPS, however, you’ll know exactly where you are, how far you’ll have to walk to the next town, and how to get home from there.

Vacation Travel - The cool thing about having a laptop GPS is that you can take it with you in the car, or in a motor home or on a boat.  However your family chooses to travel on vacation, you can always have the answers to the questions, “How far is it?” and “Where’s the next rest stop?”

International Travel - Do you know how to ask where the next rest stop is in Swahili?  Or Farsi?  Take your laptop GPS with you, making sure you have the software with local maps on it, and you won’t have to.  Your laptop GPS will help you out.  It will also show you the best way to get from Madrid to Versailles or from Baghdad to Beirut, should you want to go there.

Moving to a New Area - Having a laptop GPS when you move to a new locale can be a lifesaver.  Learning how to get around in a new community is always difficult, and having a comforting computerized voice tell you to turn left at the next corner may make the difference between finding the grocery store and being found parked by the side of the road because you are completely lost.

Space Travel - all right, I agree that most of us will not be using a laptop GPS for space travel.  However, at some point in the near future it is likely that this will be the case.  Traveling into outer space is no longer the province of just official government travelers; tourists now have the ability to go there as well.  Even though a laptop GPS does not have the functionality to work on the moon, if you are within the orbit of the satellites, it will give your exact position, including how high you are.

At this point, you may think that using at laptop GPS for space travel is a big stretch, but there are some people who would like to add space jumping to the list of extreme sports.  The new sport of space jumping essentially is jumping out a full-blown gondola from altitudes that is so far up that the air is too thin for airplanes to function.

To many individuals shock, there are actually people going this. One of the needs of these extreme sportsman is their need to know how high they are, so if they were to set a new record that will have the data to support it, as well as needing to know where they will land.  You can drift quite a ways off course when you practice space jumping from the stratosphere.  A laptop GPS would come in pretty handy in this situation.

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