The Global Positioning System (GPS) was developed by the Department of Defense and consists of a group of 24 satellites which are monitored by five ground stations. It essentially allows you to pinpoint your location anywhere on the surface of the Earth, even in cloudy weather, with the use of a GPS receiver. The GPS receiver is a navigational device that uses these satellites as reference points to calculate your position on the ground. It does this by triangulating your position between at least 3 satellites. The GPS receiver uses the time it takes the coded radio signal to get from the satellite to the receiver to calculate the distance it is from that satellite. So, by accurately measuring the distance from the ground to these satellites, it can triangulate your position.
GPS consists of 3 basic parts:
The control part is the central part of GPS. This is where the satellites are monitored and adjustments (atmospheric corrections, timing corrections, etc.) are made. There are 5 stations located worldide and each satellite passes over a monitoring station twice a day.
The space part is the NAVigation Satellite Timing And Ranging (NAVSTAR) group of satellites that bradcast the GPS signals. There are 24 satellites orbiting at about 20,200km above the Earth. They each make one revolution approximately every 12 hours.
Consists of a user and a GPS receiver. The possible applications of GPS are limitless.
GPS is based on satellite ranging. This technique of measurement is based on timing how long it takes a radio signal to travel from the satellite to the GPS receiver a...
... middle of paper ...
...or short, consists of both satellites and ground based stations that supply correction information for your GPS receiver. This correction information can provide an improvement in positional accuracy of up to five times greater. It corrects for GPS signal errors caused by atmospheric disturbances, timing, and other errors. WAAS was developed by the FAA in order to help increase the accuracy of precision flight approaches. The corrected information is broadcast through two geostationary satellites that are located at a fixed location over the equator.
The Aerospace Corporation: http://www.aero.org/publications/GPSPRIMER/index.html
GPS Mapping for GIS., 2001, Trimble Navigation Limited.
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- INTRODUCTION It was developed by US Department of Defense in 1969 for military applications. The system was made available in 1980s for civil use a decade after it was developed. It is also called as NAVSTAR (Navigation System, Timing and Ranging). Orbiting navigational satellites are used in this system for transmitting position and time data to the handheld devices or receivers. The handheld devices or receivers calculates latitude, longitude, altitude and velocity itself based on the orbiting navigational satellites.... [tags: navigation, position, satellites, signals]
1087 words (3.1 pages)
- GPS is a system of satellites radio-transmitters that orbit the planet in great numbers; their purpose is to be able to pinpoint the exact location of an individual or any type of vessel that is equipped with a receiver transmitter within a very small radius. GPS navigation has had a great impact upon society in general as well and its commercial and military applications. Global Positioning is made available at no cost to anyone who has a GPS receiver unit anywhere on the planet. A GPS unit is able to give the user longitude/latitude information as well as, altitude, traveling speed, distance traveled, distance remaining and time in any type of weather conditions imaginable.... [tags: Technology]
757 words (2.2 pages)
- What is GPS. The Global Positioning System (GPS) was developed by the Department of Defense and consists of a group of 24 satellites which are monitored by five ground stations. It essentially allows you to pinpoint your location anywhere on the surface of the Earth, even in cloudy weather, with the use of a GPS receiver. The GPS receiver is a navigational device that uses these satellites as reference points to calculate your position on the ground. It does this by triangulating your position between at least 3 satellites.... [tags: physics global positioning systems]
1095 words (3.1 pages)
- Global Positionning System Versus the Right To Privacy From the beginning of time, man has tried to find out where he was and where he was going. Locating places as well as himself has long been a quest. Mankind developed a number of early inventions to help with this search including the compass, the sextant, the map with longitude and latitude, charts, plans, graphs, telescopes, binoculars and numerous other tools to assist him. The most current, extensive, far-reaching and comprehensive of these is the Global Positioning System (GPS).... [tags: GPS Globarl Positioning System Papers]
1791 words (5.1 pages)
- The Global Positioning System (GPS) provides numerous benefits to people across the globe. Vehicle manufacturers use the system for navigation in their cars, cell-phones use GPS to triangulate the user’s location, and certain applications use the system to track workouts. There are, however, numerous military applications for GPS. Aircraft use it for guidance, naval vessels use it to traverse the ocean, soldiers track each other on the ground with it, and guided bombs use it to strike within feet of their target.... [tags: Technology, Global Positioning]
1932 words (5.5 pages)
- Historical Background Huffman Trucking has a long-standing record of providing exemplary service for a reasonable price. K. Huffman founded Huffman Trucking in 1936 in Cleveland, Ohio using a single-tractor trailer to haul goods from the open plains of Ohio's farm fields to the big city. The company had a dramatic growth spurt because of the Second World War when there was an increased demand for the transportation of manufactured goods from the factories of the Midwest to ports along the East coast.... [tags: Truck Business GPS Transportation]
1917 words (5.5 pages)
- Using GPS to Track a Particular Person Introduction Often times its hard to imagine how the world survived without cell phones. Its an automatic response, when you see a car accident you take out your cell phone and dial for help, or when a child is waiting for a ride they will call their parents to see how far away they are. It is a great convenience for society to be able to do such things. Imagine if you didn't even have to call somebody to find out where they were. It may seem like a futuristic idea, humanity being capable of such mind reading; however, the advancement of GPS, global positioning systems, those ideas are coming to life in the present.... [tags: Global Positioning Systems Technology Essays]
3329 words (9.5 pages)
- The Global Positioning System The global positioning system (GPS) is a satellite-based navigation system, consisting of a network of 24 orbiting satellites travelling on six different orbital paths. These satellites, referred to as NAVSTAR satellites, are constantly moving, making two complete orbits around earth per day. The first GPS satellite was launched in February, 1978. Satellites now weight approximately 1 tonne, and are about 5 metres across with extended solar panels.... [tags: Papers]
972 words (2.8 pages)
- Global Positioning System Wouldn’t it be great if you could be sure that you would never be lost again. That you would know exactly where you were at all times, whether at land, air, or sea. Well, that is possible with modern technology. More specifically, that is possible with the help of GPS, the Global Positioning System. GPS is a navigational tool that has recently become extremely popular because of it wide range of uses. Whether you are a fisherman or an avid traveler, you could find some use for GPS.... [tags: Navigation Technology Essays]
1517 words (4.3 pages)
- Global Positioning System Global Positioning System (GPS) technology has been on the market for a number of years now. Originally developed by the military for logistical tracking and navigation, it has seen a number of applications for personal and commercial uses in recent years, with more coming down the development pipeline. GPS uses a constellation of low earth orbit satellites to determine the exact longitude, latitude and altitude of the user or vehicle with the tracking monitor. This location is determined by using trilateration between at least three, and preferably four satellites overhead.... [tags: Technology Privacy Ethics Research Papers]
3742 words (10.7 pages)