What is a GPS? how does it work?
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Global Positioning System\nI  INTRODUCTION \n\nGlobal Positioning System (GPS), space-based radio-navigation system (see Navigation), consisting of 24 satellites and ground support. GPS provides users with accurate information about their position and velocity, as well as the time, anywhere in the world and in all weather conditions.\n\nII  HISTORY AND DEVELOPMENT \n\nGPS, formally known as the Navstar Global Positioning System, was initiated in 1973 to reduce the proliferation of navigation aids. GPS is operated and maintained by the United States Department of Defense. By creating a system that overcame the limitations of many existing navigation systems, GPS became attractive to a broad spectrum of users. GPS has been successful in classical navigation applications, and because its capabilities are accessible using small, inexpensive equipment, GPS has also been used in many new applications.\n\nIII  HOW GPS WORKS \n\nGPS determines location by computing the difference between the time that a signal is sent and the time it is received. GPS satellites carry atomic clocks that provide extremely accurate time (see Clocks and Watches: Atomic Clocks). The time information is placed in the codes broadcast by the satellite so that a receiver can continuously determine the time the signal was broadcast. The signal contains data that a receiver uses to compute the locations of the satellites and to make other adjustments needed for accurate positioning. The receiver uses the time difference between the time of signal reception and the broadcast time to compute the distance, or range, from the receiver to the satellite. The receiver must account for propagation delays, or decreases in the signal's speed caused by the ionosphere and the troposphere. With information about the ranges to three satellites and the location of the satellite when the signal was sent, the receiver can compute its own three-dimensional position.\n\nAn atomic clock synchronized to GPS is required in order to compute ranges from these three signals. However, by taking a measurement from a fourth satellite, the receiver avoids the need for an atomic clock. Thus, the receiver uses four satellites to compute latitude, longitude, altitude, and time.\n\nIV  THE PARTS OF GPS \n\nGPS comprises three segments: the space, control, and user segments. The space segment includes the satellites and the Delta rockets that launch the satellites from Cape Canaveral, in Florida. GPS satellites fly in circular orbits at an altitude of 20,100 km (12,500 mi) and with a period of 12 hours. The orbits are tilted to the earth's equator by 55 degrees to ensure coverage of polar regions. Powered by solar cells, the satellites continuously orient themselves to point their solar panels toward the sun and their antennas toward the earth. Each satellite contains four atomic clocks.\n\nThe control segment includes the master control station at Falcon Air Force Base in Colorado Springs, Colorado, and monitor stations at Falcon Air Force Base and on Hawaii, Ascension Island in the Atlantic Ocean, Diego Garcia Atoll in the Indian Ocean, and Kwajalein Island in the South Pacific Ocean. These stations monitor the GPS satellites. The control segment uses measurements collected by the monitor stations to predict the behavior of each satellite's orbit and clock. The prediction data is uplinked, or transmitted, to the satellites for transmission to the users. The control segment also ensures that the GPS satellite orbits and clocks remain within acceptable limits.\n\nThe user segment includes the equipment of the military personnel and civilians who receive GPS signals. Military GPS user equipment has been integrated into fighters, bombers, tankers, helicopters, ships, submarines, tanks, jeeps, and soldiers' equipment. In addition to basic navigation activities, military applications of GPS include target designation, close air support, “smart” weapons, and rendezvous.\n\nWith mo
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Any consumer electronic device containing microchips relies on quantum physics for the diodes and transistors on the chips to work.   The laser in a CD player relies on quantum physics for its operation.   The Global Positioning System depends on very precise timing of satellite radio signals.   A special relativity correction is applied to allow for the motion of the satellite relative to you, and a general relativity correction because you are deeper in the Earth's gravitational potential well than the satellite.   Time passes at a different rate for the satellite than for us.   If these corrections were switched off, your GPS navigator would become less accurate.
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It is a good idea, though the GPS should be really inconspicuous. It was used by my team in a war game played in India (Asia). Hope u know where it is!!\nWe won the game so easily, but in real life the PoW are stripped and searched, so using it in military is out of qustion. Only a crazy general would allow it, but I liked your idea.\nGood to have such bright, intelligent questions asked.
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You could build a tracking device. Get a GPS chip and track whatever you want and use google maps to display where your tracker is. Or how about building your own Tivo. Or maybe build your own Ipod. Good luck.
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Yes because of GPS system
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Yes. I went in an electric cart that had a GPS and it tracked how far you were from certain hazards, the green, and it told you where other carts were so you didn't hit the people.\n\nThe electric carts are also better for the environment.
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Microsoft Streets and Trips offers a version with a small sized GPS that can be used as a GPS system on a notebook.  There are other portable GPSes that can also be used in conjunction with Streets and Trips (or other mapping softwares) to give full GPS capabilities on the notebook.\n\nNote: GPS receivers need line of site to the satellites.  So, you will need to be near a large window or, better, outside for the GPS to work effectively.
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you probably mean a gps service. it depends which carrier and if the subscriber has that feature turned on. the other people are misinterpreting your question to mean "how to search for a person's address using their phone number". but you said "right where someone is" so you maybe meant gps. i may be wrong.
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I would make sure whatever you buy supports SiRF III and WAAS, which will give you stronger Satellite reception and more accurate positioning. As long as the unit you purchase has windows drivers and is compatible with NMEA v2.2 it will work with Streets and Trips.\n\nI would actually recommend looking into a bluetooth GPS for around $20 more than wired USB + the cost of a bluetooth adapter. Bluetooth is much more convenient if you'll be using the GPS frequently, simply not having to deal with one more wire in the car would be worth it alone.\n\nhttp://www.semsons.com is a good spot to look / buy USB or Bluetooth GPS's.\n\nCraig\nwww.pcdirect.com
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I take it you are reading your data that is taken from  GPS system. if so you should be able to get a latitude and longitudinal positions of a car in which case mapping that should not be very hard.\n\nhttp://gpsdrive.kraftvoll.at/changes.shtml
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the hardware in it id a chip it can be tracked through gps
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A USB ported GPS receiver\n\nSuch as the one in the linky below:\n\nhttps://shop.delorme.com/OA_HTML/DELibeCCtpSctDspRte.jsp?section=10043&minisite=10020\n\nEDIT: Well, I said "similar". I am sure you can find something similar locally. Maybe print out this and take it to local computer shop and maybe they can order for you or know of local equivalent?
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A satellite transmits signals to the earth.it tracks the object by moving with the same speed as that of the car
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Yes, they can.  Most companies that give employees cell phones get them with the GPS so they can track where you are.  So, if you're supposed to go to a meeting and really go home and take a nap, they know.  They're paying you, so they can do this.
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Yes, all new cellphones have a GPS chip in them.  Specifically designed for if and when 9-1-1 is dialed.
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One system that works on spacecraft is inertial navigation, same as used on airliners.   You've got three accelerometers at right angles to each other.   If you integrate acceleration with respect to time you get velocity, and if you integrate it again you get distance travelled.   This is done for each of the three accelerometers, so you've got the distance travelled in the x,y and z directions.   You set the system at the beginning of your journey, where you know your location.   This is a dead-reckoning system; errors build up over time.This is less complicated to use than it sounds; all the maths is done by the machine.   In practice, on aircraft, there are three identical, completely independent INS.   They should all agree, but if they don't, you believe the two that do.   If all three are different, then you've got problems.   On a long space mission this system would be too inaccurate; aircraft flights only last a few hours, which isn't long enough for serious errors to build up.   An alternative for spacecraft is a refinement of the Global Positioning System, which uses the timing of radio signals from satellites whose positions are knowm.   Another radio navigation system that works in space is similar to the Distance Measuring Equipment used in aviation; you send out a radio signal which activated a transponder that sends a signal back.   The time taken for the return signal tells you how far you are from the transponder.
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The two main companies that make hand held GPS systems are GARMIN and MAGELLAN.\n\nWe have a GARMIN and it is relatively user-friendly. I have no experience with MAGELLAN.\n\nMany places sell this equipment - I've seen hand held units advertised for $220-400. I believe both companies are competitively priced. The link below is to Garmin Company, which as an FAQ page and additional information.