what's GPS? how it's useful in normal life? esp. in India.?
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Global Positioning Satellite: A space base radio position, navigation and time transfer system continuing to be developed by the US Department of Defense. When fully deployed, the system is intended to provide highly accurate position and velocity information and precise time, on a continual basis, to an unlimited number of properly equipped subscribers. The system will be unaffected by weather and will provide a worldwide common grid reference system. ...
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Assuming you can get a signal (gps is a line of site technology)the accuracy should be no different than outdoors. That being said about the only place you will likely get a signal is near a window.
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I lost my pc and all stuff a couple of years ago in a break in.\n\nIt was amazing , how slowly and surely that the PC and cell phone (called a mobile phone in the UK)\n\nTakes over your life.\n\nIts scary to think, we can live our entire life with just ordering stuff on the internet.\n\nWe never need to talk to another living soul again.\n\nBut on the other hand its interesting the way we have communities like yahoo answers to bring more ppl together.
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Part 1: sounds like it is indeed free.\nPart 2: is india in US or Canada? You're allowed to check in geography atlases, if you need to.
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I found one here for about 750$ :\n\nhttp://gps-applications.com/WanderCare100T.htm\n\nAnother one is sold here, but no price given:\nhttp://www.stopllc.com\n\nGood luck!
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Haha...that lazy sunday video is freakin' awesome!\n\nI prefer Google Maps...you can not only get the view of the roads, but a view of the satellite also. It's just awesome!
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ASK SOMEONE OVER THERE IN INDIA !!!
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I have the Garmin 330c and I love it. It's not super cheap, but it's not super expensive. I opted to get this instead of the built-in Infiniti navigation system in my g35x.\n\nWith a simple touch screen interface, automatic route calculation to any destination, and turn-by-turn voice-prompted directions, the StreetPilot c330 GPS navigator is a powerful companion for your adventures on the road.
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All GPS can tell you is your location on the earth. GPS cannot tell you where your property corners are, unless you already know the coordinates of those property corners. Your GPS unit does not know where your property corners are until you provide it with the information it needs. \n\nIf you knew the coordinates, which could be either latitude and longitude that mappers use, or state plane coordinates that surveyors use, then you could use GPS to guide you to the corner locations. But since you do not know where the corners are, you have no way of entering the required data into the GPS unit. \n\nYou not only need to get a professional surveyor to survey your property, you also need to tell the surveyor that you need him to provide you with the state plane coordinates of those points, so you can enter them into your GPS unit, then you will be able to find them yourself in the future.
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It depends on what you are trying to do.\n\nIf you are trying to find intersellar radio signals in the nighttime sky (SETI@Home), computers are much more efficient. If you are trying to navigate a vehicle across rocky terrain (DARPA Grand Challenge) apparently humans still beat computers at that pretty handily.\n\nThat doesn't mean that computers won't one day be better at off-road navigation than people, but such is not the case at today's state of the art.
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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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Your GPS antenna needs to be able to see the sky.  Try pointing it out a window.  Besides, you don't really need to know where you are at home, do you?
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How is GPS used?\n\nGPS receivers collect signals from satellites in view. They display the user's position, velocity, and time, as needed for their marine, terrestrial, or aeronautical applications. Some display additional data, such as distance and bearing to selected waypoints or digital charts.\n\nBack to top\n\n\n--------------------------------------------------------------------------------\n\nWho uses GPS?\n\nGPS is used to support land, sea, and airborne navigation, surveying, Geophysical exploration, mapping and geodesy, vehicle location systems, and a wide variety of additional applications.
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Get a user name\nIt's free\nCan view Sky charts and satelites as well\nRegister your location
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Google earth is a nice software to view satellite images around the world..take note that not all parts can be seen...\nit's interesting, since it's a new service...\nbut i think there are still more things for Google to improve, the quality, speed, and search function too...\n\nbut it's ok, since it's free...\n\nan issue would be....security matters, a debatable issue.\n\nbut for home users, it's already good and satisfying,
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If you are talking on one, they can trace it to which cell tower it is using,  alot closer in major cities,  a larger distance in rual areas.\n\nThere are some phones now that do have GPS tracking ability but they are still rare.  But with those, yes to the very spot they are sitting.
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google maps allows you to switch between street views and satellite views.  Give it a try.