There are currently 32 satellites, a gps system needs to receive a signal from at least 3 of them to function. Older systems only used 3-4 but new systems can use up to all 32 the more satellites that a system uses....the greater the accuracy.
Your hand-held GPS is a receiver. It listens to signals fromGPS satellites, and doesn't "give off" any signal of its own.
There are 24 satellites in the United States GPS system that are active. There are 6 more that are "asleep" and saving power until they are activated to replace one of the 24 satellites that has to be taken off line for maintenance, damage, and so forth.The Russians also have roughly that number of satellites in their GLONASS system.Europe is deploying satellites in its Galileo positioning system.Japan has or will launch its first satellite in its QTZZ positiong system.There are also about 4 satellites in WAAS, the Wide Area Augmentation System that makes GPS more accurate. Europe's version of this is EGNOS, or European Geostationary Overlay Service. It has 4 or 5 satellites.
Yes, it GPS should be able to work in Barbados. The only places on earth GPS is known to have trouble getting reception are underground, in the middle of downtowns of large cities where large buildings can reflect the signal, and towards the north and south poles. In all cases, the only places GPS does not work is where it does not have line of sight to the sky. If travelling to Barbados, if you are using a GPS on a cell phone, sometimes it will not work as some cell phones find their location off the location of the cell phone tower, and not off the GPS satellites.
Yes, GPS devices use satellites to communicate and determine location, so they do emit low levels of electromagnetic radiation. However, this type of radiation is non-ionizing and considered safe for everyday use by regulatory bodies.
It is difficult to be completely invisible from GPS signals, as it is a passive technology that relies on receiving signals from satellites. However, you can reduce the accuracy of your GPS location by turning off GPS services on your device or using a GPS jamming device. Keep in mind that interfering with GPS signals may be illegal in some jurisdictions.
Your hand-held GPS is a receiver. It listens to signals fromGPS satellites, and doesn't "give off" any signal of its own.
There are 24 satellites in the United States GPS system that are active. There are 6 more that are "asleep" and saving power until they are activated to replace one of the 24 satellites that has to be taken off line for maintenance, damage, and so forth.The Russians also have roughly that number of satellites in their GLONASS system.Europe is deploying satellites in its Galileo positioning system.Japan has or will launch its first satellite in its QTZZ positiong system.There are also about 4 satellites in WAAS, the Wide Area Augmentation System that makes GPS more accurate. Europe's version of this is EGNOS, or European Geostationary Overlay Service. It has 4 or 5 satellites.
There is no GPS system on the iPod Touch. The iPod Touch does not have Global Positioning System capabilities at all. Therefore, there is no need to turn off what is not there.
Time in the GPS satellites run 1/3 of a billionth of a second faster than time on Earth. This could potentially make the GPS systems off by 6 miles.
1719 the collegeway
Yes, it GPS should be able to work in Barbados. The only places on earth GPS is known to have trouble getting reception are underground, in the middle of downtowns of large cities where large buildings can reflect the signal, and towards the north and south poles. In all cases, the only places GPS does not work is where it does not have line of sight to the sky. If travelling to Barbados, if you are using a GPS on a cell phone, sometimes it will not work as some cell phones find their location off the location of the cell phone tower, and not off the GPS satellites.
None of them do, as the can't pick up radio waves from the satellites down there. You'd need either an INS or a system using specially deployed beacons to pull that off.
Yes, GPS devices use satellites to communicate and determine location, so they do emit low levels of electromagnetic radiation. However, this type of radiation is non-ionizing and considered safe for everyday use by regulatory bodies.
It is difficult to be completely invisible from GPS signals, as it is a passive technology that relies on receiving signals from satellites. However, you can reduce the accuracy of your GPS location by turning off GPS services on your device or using a GPS jamming device. Keep in mind that interfering with GPS signals may be illegal in some jurisdictions.
Conventional GPS operation uses radio signals from satellites. In very poor signal conditions, for example in a city, these signals may suffer multipath where signals bounce confusingly off buildings, or be weakened by passing through walls or tree cover_ An A-GPS system can address these problems in several ways, using an assistance server or other data from a network.
A GPS receiver determines its location by analyzing signals it receives from GPS satellites orbiting around Earth. Signals from satellites that are farther away take longer to reach the GPS receiver. Distances to several satellites are calculated based on the amount of time their signals took to reach the receiver. After determining its distance from at least three satellites, the GPS receiver can calculate its own position using triangulation. (Any location can be identified using distances from three other know locations.)
Bouncing off the Satellites was created on 1986-09-08.