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Global Positioning System history
Introduction to the Global Positioning System
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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. GPS needs at least 24 satellites to provide full coverage of every point on the earth, all the time. To calculate one position on the earth, at least 3 satellites are needed. Currently, there are 28 working GPS satellites, out of roughly 750 currently in miliary, civilian and commercial use. GPS satellites, quite simply, broadcast data - each satellite knows two things: its exact location in obit, and exactly what time it is. It knows its position within a few feet, whilst moving a t 17 000 miles per hour, and knows the time within approximately 100 picoseconds (1 trillion picoseconds to a second). The satellite signal also contains a 'psuedo-random code' - its identification, ephemeris and almanac data. Ephemeris data contains the status of the satellite (able to function or no), the information mentioned earlier, that is the current date and time. The almanac data tells the GPS receiver where the GPS satellite should be at any time throughout the day. Each satellite transmits data not only on its own location, but the location of every other satellite in the system. To condense this, each satellite transmits a message which informs of i... ... middle of paper ... ...en, how far, how fast, and can bill you for the risks that you're taking. A trial has already been performed in Texas using such a system. Indeed, commercial companies are now using GPS for ultimate knowledge - knowing exactly where their units are, and what they are doing, in the mould somewhat, of Big Brother. Big Brother-esque again, is the fitting of GPS chips into mobile phones. By the end of 2005, all mobile phones sold in the US must be able to report their location. The GPS phone will know where it is and be able to report that information, if it is stolen, in an emergency, if you are lost. Further GPS research can only further the dominance of this technology, providing a future with greater awareness, greater knowledge, openness and even wider communication, making the world once more a smaller place.
Although this service sounds quite convenient and has its obvious benefits, there are other issues to be considered. For example, many ethical dilemmas that play from privacy issues. In a world when at one time you could take a walk to remove yourself from the eye of another, we not may be under constant supervision of sorts. Tracking devises are easily placed in many things, cell phones, which are used by nearly all people in today's American society, are the recent and most wide spread target for GPS. Is it ethical to track someone through an everyday devices such as a cell phone, is tracking people ethical in itself? These are the questions that must be resolved before we can celebrate the positives of such technological advancements.
ADT has serviced the world for over 135 years and prides itself in the products and services they provide. Throughout the years they continue to create new products and improve their existing products. ADT hopes to continue on that path with the creation of the Miniature GPS Tracking Device. Through thorough marketing research and strategic planning ADT hopes to provide this product to all consumers who can benefit from it throughout the world.
The story of the haunted GPS unit served as a commentary on the consequences of over-reliance as well as blind trust in not only navigation units, but also technology in general. It also served as a warning against buying items that were at too good to be true prices from websites where the sellers are not reputable companies but users who have no desire to maintain a good reputation.
OnStar, a wholly owned subsidiary of General Motors (GM), was founded as a telematics company that uses telecommunication systems to transfer information to and from vehicles. The primary focus of OnStar was to provide assistance in an emergency situation. OnStar was released in 1996, a time where many of the technological innovations that we use today didn’t exist yet. This innovation such as GPS which didn't get much use outside of the military and smartphones which was still 10 years away. At the time, people depended on physical maps as a navigation system when traveling. OnStar, not satisfied with the limited traveling tools, imagined a different future such as a connected world for vehicles. This connected
The invention of the GPS started with Dr. Ivan Getting leaving his position at Raytheon Company, and armed with the knowledge of what was at the time the most advanced navigational technology in the world, they began developing the Global Positioning System. He, Roger L. Easton, and Bradford Parkison began in the 60’s with a constellation of 24 satellites (placed in six orbital planes) orbiting the earth at a very high altitude (about
As applications of geospatial technologies continuously break the disciplinary barrier, the need for books on these technologies to reach diverse audiences is greater than ever. The challenge, however, is to write a book on this complicated subject that incorporates the knowledge of multiple disciplines and makes it valuable for those who may or may not have diverse educational backgrounds, but require using these technologies. Most books on geospatial technologies target a specific audience. Contrary to this, Geographical Information Science tries to target three different audiences (users, students, and engineers) by using formats and languages comfortable to them. While this effort is laudable, maintaining the balance and attractiveness to all the three audiences is challenging. The author, Narayan Panigrahi, has accomplished this balancing act but with mixed outcomes. His computer science background is clearly seen in the structure and contents of the chapters.
that surround it. Now your buddy knows the location of where you are. Then, you
Albrecht, Katherine, and Liz McIntyre. Spychips: How Major Corporations and Government Plan to Track Your Every Move with RFID. Nashville, Tenn: Nelson Current, 2005. Print.
The following is a brief illustration of the principles of GPS. For more information see previous chapter. The Global positioning System (GPS) is a satellite-base navigation system that provides a user with proper equipment access to positioning information. The most commonly used approaches for GPS positioning are the Iterative Least Square (ILS) and the Kalman Filter (EKF) methods. Both of them are based on psuedorange equation:
What is this world coming to? When most of us think of tracking devices they think of primarily negative issues. But that has all changed now. A tracking device the size of a tic tack that can be surgically implanted to provide a tamper proof means of identification, enhanced e-business security, locating lost or missing individuals, monitoring heart rate, vital signs, tracking of the elderly, the location of valuable property, and monitoring the medical conditions of at risk patients, all at the convenience of a button or a phone call (www.allnet). It is called the GPM or as we know it the Global Positioning Microchip. Today I will discuss the ideals of the implanted microchip and some of the technical, social, economic, ethical and practical implications of its technology. Furthermore exploring some of the benefits and dangers of such a device. Invented entirely for animals man has expanded its uses to stolen cars tracking devices, criminal rehabilitations, and experimental animal observations. The chip has come a long way but where will it go from here.
From remotely controlled drones that can spy on your every movement, even inside your own home, to mobile devices and social media that track you locations, google searches, and interests in order to customize ads and suggested pages, and, many believe, to track your activities and report them to the government.
Even as I sit here typing this paper, my own shiny, rectangular piece of molded plastic and metal lies inches away from my fingertips, beckoning me to use it. Looking out the window, one of the first sights I see are people walking with one hand up to their ear, evidence this technology is in use. I can count on one hand the number of adults I know who do not own one these mobile devices. People are now able to be virtually accessible almost anywhere at any time.
The GPS is sensing knowledge to help with navigation with the car and destinations. Autonomous cars are not yet available on a large scale of the world such as out of the United States of America, but have been programmed and developed to travel along the roads of America. Most autonomous cars are programmed only for American roads, we have made a big step towards the future with autonomous cars, with them being only available mainly in America, they are a luxury. They are making their way to larger scale autopilot features, and will eventually be available on a larger scale.(Ali
There was a time a person would use a roadmap to get from one location to another. Some also would stop and ask for directions. Today, you seldom see paper maps and people stopping at a local gas station for directions. Many vehicles come with a navigation system that provides a real-time map of the vehicle’s current location as well as systematic directions to requested destination.
GPS is a navigational aid that is satellite based. It is made up of a network of 24 satellites in orbit around the world. The first satellite was launched in 1978 and the last was put into orbit in 1994. Every 10 years another satellite is put into orbit because each satellite is made to last that amount of time. The system began as a military application but in the 1980’s the government decided to make it available to everyone, anywhere, anytime. The system finds your position by measuring the time it takes to receive the signal back to the satellite. It then does that with other satellites to triangulate your position in relation to the earth. To calculate a position in 2D the system has to be locked on to at least three satellites, but for a 3D representation you need to be locked on to at least 4 satellites. Once the position is found the GPS can calculate much more info like speed, bearing, track, distance, etc… The GPS system is very accurate; Garmin (a leader in GPS technology) states that their newest receiver is accurate up to an average of 15 meters.