What is global positioning systems?
A global positioning system is a system to help navigate where you are on the planet. It is guided by satellites and works in any type of weather.
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\n. \n Answer \n. \n. \nReceivers or satellites? \nThe US has over 22 GPS satellites in orbit. The Russians have their system, the EU is getting ready to launch a system, too. Don't know about the Chinese.
Answer . \nhttp://www.britannica.com/ebc/article-9365690?query=GPS&ct=\n. \nGlobal Positioning System (GPS) \nConcise Encyclopedia Article Page\n. \nPrecise satellite-based navigation and location system originally developed for U.S. military use.\n. \nGPS is a fleet of more than 24 communica…tions satellites that transmit signals globally around the clock. With a GPS receiver, one can quickly and accurately determine the latitude, the longitude, and in most cases the altitude of a point on or above Earth's surface. A single GPS receiver can find its own position in seconds from GPS satellite signals to an accuracy of one metre; accuracy within one centimetre can be achieved with sophisticated military-specification receivers. This capability has reduced the cost of acquiring spatial data for making maps while increasing cartographic accuracy. Other applications include measuring the movement of polar ice sheets or even finding the best automobile route between given points.\n. \n. \nReview of handheld GPS'\n. \nhttp://www.epinions.com/GPS_Devices/search_string_~GPS/adv_search_~1 (MORE)
Advantages of GPS Depending on what you are using it for, and the rating of your system it could be invaluable. I have a hand held and lap-top connected GPS. The advantages of having either is determining your exact position. While traveling through Albany, GA, I became lost. Looking for a place to… pull over and ask directions (late at night) very few places were open. Liquor stores--OUT, bars--OUT, I needed a place that would be knowledgable and safe. I saw a Dominoes delivery place...who better would know their way around town than a pizza delivery joint? The guy gave me excellent directions...to the hood! OK, I needed a place that was knowledgable, safe and trustworthy. I saw a cop at a 7-11 and found out I was headed for "gang land" (his words). After that, bought a middle of the road hand held GPS from Wal-Mart, and never again pulled over. I've also used it on camping and canoeing expeditions. Consider it the "cheaters" map. The advantages of GPS over a map is 100 fold, GPS is not infoulable though, the military can turn off the satelites or render them "not as accurate" for a number of reasons, most importantly to render enemy GPS guided munitions inoperative. Having an understanding of maps is always a good back up. A friend of mine obtained her private pilots license and innappropriately used GPS for guidance. When the batteries failed, she was lost. One of the Best Advantage is that Using GPS , one can locate any gps devicce which is connected through satellite . Almost Every Country uses this technology from crime field to intelligency fields . (MORE)
ADVANTAGERS AND DISADVANTAGERS OF GPS i dont no why do you ppl have so many questions?
For the gps global position system, the satellites orbiting Earth is the basis. Each satellite orbits earth twice a day on one of six separate orbital paths. The Department of Defense created the system, which was originally for military purpose. In 1983, the civilians got the right to use the syste…m after many practical application stem from its infrastructure. All the satellites transmit the signals down to Earth in the global positioning system. Each satellite is programmed to send the signals at the same time. The signal contains the digital information about the satellite's identification and position. The information transmission time is very important. Each satellite is set up the time and the time is extremely precise. Your car's satellite gps receiver could receive the satellite transmissions if it has a clear view of the sky, not blocked by the solid object like building or mountains. There should be a time difference form the signal was sent when the gps unit receivers the satellite signal. Because the signal need to take time to reach your receiver. But the receiver could automatically calculate the distance to the satellite by the simple formula of speedÃtime=distance. As the satellite transmissions all travel at the speed of light, which is already known. You can not know where you are if you just know the distance to one satellite. The information just tell you that you are somewhere within a sphere around the satellite. So gps must use trilateration. The trilateration equates to using the distance to at least three satellites to determine your position. Three satellites could convey an accurate two-dimension fix, giving you your longitude and latitude coordinates, and four satellites give a three-dimension fix that includes elevation. Basically, the more satellites are used, the more accurate location is. Gps satellite orbits were designed in such a way that you will always have an effective, clear path to at least four satellites. The coordinates is not very helpful when you are in a car. Nobody will use coordinates to give directions or to navigate highways and roads. This is the map software's use. It like a paper map, including the detailed information on the roadways and features of a given area. The map companies are constantly updating the digital maps to provide the most accurate mapping possible. The gps unit is able to overlay your location onto the map and provide turn-by-turn directions with the map data. (MORE)
The global positioning system was invented as a military tool foruse in combat operations. It then expanded to regular society.
A global positioning system may give out someone's position andthat will affect his security. Geotagging of photos slightlyincreases the chances of a child being kidnapped.
It was not until the 20th century that ground-based radio navigation systems were introduced. Some are still in use today. GPS is a satellite radio navigation system, but the first systems were ground-based. They work in the same way as does GPS: users (receivers) calculate how far away they are f…rom a transmitting tower whose location is known. When several towers are used, the location can be pinpointed. This method of navigation was a great improvement, yet it had its own difficulties. An example of such a system is LORAN. Each tower had a range of about 500 miles and had accuracy good to about 250 meters. LORAN was not a global system and could not be used over the ocean. Because ground based systems send signals over the surface of the earth, only two-dimenstional location can be determined. The altitude cannot be calculated so this system could not be applied to aviation. The accuracy of such systems could be affected by geography as well. The frequency of the signal affected accuracy; a higher frequency would allow for greater accuracy, but the user would need to remain within the line of sight. The first global navigation system was called OMEGA. It was a ground-based system but has been terminated as of 1997. Satellite navigation systems can provide high frequency signals allowing for high accuracy, as well as global access because the satellites are so high up that remaining within the line of sight of the satellites is easy. (MORE)
Orbiting at an altitude of approximately 20,200 kilometers (12,600 miles or 10,900 nautical miles; orbital radius of 26,600 km (16,500 mi or 14,400 NM)), each SV makes two complete orbits each sidereal day.  The ground track of each satellite therefore repeats each (sidereal) day. This is a …quote from Wikipedia's article on GPS http://en.wikipedia.org/wiki/Global_Positioning_System (MORE)
The global positioning system is the network of satellites that orbit earth that gives us GPS
Cost . Purchasing a GPS based on price can be a major disadvantage. If you purchase a " bargain GPS," you will get what you pay for, and features such as traffic and up-to-date maps could be lacking.. Reception . GPS devices are limited by having clear access to the satellites that provide t…he tracking. In locations with tall buildings or sparse coverage, reception can be poor.. Directions . Turn-by-turn directions are not available on every type of GPS device. Some will give very little advanced notice before an upcoming turn.. Accuracy . Maps on GPS devices are not updated in real time for all models. This means that it is possible a GPS device will direct you onto a road that is closed or no longer exists. It could also miss new roads and businesses.. Battery Life . GPS units that are not plugged into a power source, and rely on batteries, which can drain quickly. This can increase the cost of owning a GPS unit significantly. (MORE)
It uses similar theory as in the old days when ships took bearings on known reference points to chart its current location. Instead of bearing angles, GPS uses distances from the satellites (the satellites are constantly moving, (to keep up with the same spot on earth) but they 'know' where they are… and transmit this data as well as a timing signal). If you have a signal from at least 4 different satellites, then your GPS can calculate its current position as well as get the correct current time. Rather than go into more detail here, I refer you to the related link, which I think does an excellent job of explaining it. (MORE)
It's by identifying the crustal [or lithospheric or tectonic] plate movement that's part of earthquake activity that Global Positioning Systems [GPS] help predict earthquakes.
global positional system (GPS) is used for finding tracks like tracking earthquakes or navigation too.
A Global Positioning Device or GPS is a portable navigation system.It uses a satellite to give the user time and location informationno matter the conditions almost anywhere on Earth.
My husband is a long haul trucker. The company he works for uses GPS to track the trucks and estimate their arrival times, etc. It is very helpful for dispatch so that they can co-ordinate unloading and reloading.
GPS satellites use microwaves to transmit information in binary. They use microwaves because they are low frequency and can pass through the ionosphere without being reflected.
The GPS changes the society by having fun activities such as geocashing and telling you exactly how to make your way driving across the entire world and it also tells you the fastest route
1) Design: In-dash or portable unit or smart phone app: In-dash have more functions available and can come already installed in a vehicle. Portable units can be moved from car to car but will have wires that may get in the way. 2) Check the location of the antenna. Try to get the best exposure to… the sky for the type of GPS you want. 3) Advanced Features: just navigation or are there other features you might want to use such as real time traffic reports, live fuel pricing, weather reports. 4) Voice commands so that the driver won't be trying to enter information while driving unless you usually have a passenger who can enter the information. Some units lock the keyboard and touch screen while the vehicle is moving. 5) Price and installation 6) Size and viewing performance of the screen: a larger screen may be easier to see and read, but more likely to be affected by sunlight (MORE)
Global Positioning System has numerous applications. The earliest application was military. Boaters were the first civilians to use GPS extensively for navigation, as dead reckoning is prone to error. Many high-end cars have a GPS navigation system which serves much the same purpose as a marine GPS.… Some athletes are turning to GPS to track speed and distance. A few digital cameras have a GPS receiver which records the location where the picture was taken. So far, I've listed only one-way applications. Two-way applications include cell phones when calling the emergency number and vehicle tracking. (MORE)
GPS which is the global positioning systems are important in agriculture because it helps farmers in ditecting the amount of nitrogen,phosphorus required in the soil.It is a quit expensive and advanced agricultural system and is mostly used by large scale famers. They are also used by commercial s…hips, instead of using celestial navigation. You don't need a clear sky and the position is continuously updated. Bad weather systems can be more effectively avoided and the course re-routed. This saves time, money and damage. People find them useful in cars, to tell them exactly where to go. Commercial traffic saves time and money. Private users have more peace of mind that they will not get lost. Vehicles involved in accidents, can get emergency services to them more accurately, either by the services getting there more reliably, or by the victims knowing where they are in the first place. Saving time and lives. (MORE)
military navigation and missile guidance system. They just let us use it until they need it for war.
It works by receiving very accurate time signals from several satellites and working out the time taken by these signals to reach you - with some accurate and clever Mathematics.
global positioning system helps us to find where we are on earth. in short it is also called (GPS)
A Global Positioning System, or GPS for short, is useful for many travelers and everyday commuters. Plug in your destination, and it tells aloud the directions to your destination. The newer types of GPS' have inserts that can tell you the nearest gas stations, restaurants, where you are, when you g…et there, rest stops, and more. (MORE)
It was originally designed for use by the US Dept of Defence. Even to this day the GPS the military gets to use is much more accurate than the civilian version.
Go places with it. Type in a address or use a P.O.I. to get you to where you want to go.
The design of the GPS itself is similar to ground-based radio navigation systems used in World War II. More inspiration for the GPS came in 1957, when the Soviets launched Sputnik. A group of American scientists were tracking the satellite when they realized that the frequency of the signal was stro…nger as it got closer and then decreased as it moved further away. They realized because they knew their location on the globe that they could pinpoint Sputnik by measuring its Doppler distortion. The first satellite navigational system was successfully tested in 1960. . Don't forget the 1942 contribution made by the actress Hedy Lammar with her invention of and the original patent for a spread spectrum radio communication system. (MORE)
The global positioning system (GPS) is a series of satellites in orbit around the earth, that can "talk" to any GPS receiver on the ground, and that receiver will show it's location on earth to withing about 20-30 feet in any direction. Also, a particular place one visits (an especially beautiful sp…ot in the woods, for instance) can be stored in the GPS memory, and you can always find your way back to those coordinates exactly again. It has hundreds of uses for regular people, as well as Police, Fire and Emergency personnel. (MORE)
umm......i don't think so. global positioning systems are used more for navigation (in the geography area). there are space shuttles and equipment in space for predicting weather. but this is just off -my- head input. if your not sure, google "GPS", and find out what they're used for.
For the simple reason that atomic clocks are highly accurate - usually only gaining or losing one second over thousands of years. High accuracy is vital in GPS systems - otherwise the maps would be out of alignment as you travelled. As an example - One of the most recent atomic clocks constructed… in 2010 is reckoned to only gain or lose less than a second in over a billion years ! (MORE)
GPS provides position/location information. It is similar to that the phone company can track you phone location with the signal strength received by at least 2 cell phone towers. If only one cell phone tower, the phone signal can only be interpreted as that the phone is somewhere in the circle of a… known radius, assuming at ground level. With two cell phone towers, the phone signal can be narrowed to two possible locations. With three cell phone towers, the phone location is narrowed down to a small region, say within a city block. In the GPS, the cell phone towers are replaced by satellites. A hand-held GPS unit can use the signals from 4 satellites to calculate the coordinates (x,y,z) of the location and also how fast the unit is moving. (MORE)
this is a bit to broad a topic to get help. do you mean what does it do or how to access it or what
GPS is a precision navigation system developed for the US military and maintained by the US Air Force Space Command in El Segundo, CA. The initial specifications were written in the early 1980s. The system consists of a constellation of at least 24 transmitting satellites, so that 12 will always be …above the horizon anywhere in the world. Each satellite contains a precision atomic clock (periodically monitored and adjusted by the Air Force from the ground) and is assigned a long pseudorandom identification number, which it transmits along with a data block containing its clock time and various other status parameters. This system of satellites is available for both military and civilian use (however the military has priority and in a war can garble the civilian signal causing unpredictable random location errors in standard civilian GPS receivers). When a GPS receiver somewhere is able to pick up and identify 3 or 4 GPS satellites signals, it can use a method called triangulation to compute its coordinates on earth in latitude/longitude and if it has 4 signals the altitude. If the receiver gets more than 4 signals it can reduce the error in the calculation and improve the accuracy of the coordinates. I am deliberately leaving out the technical details of how this is done, as it is beyond the scope of this question. Such a GPS receiver is connected to a navigation computer of some kind, that translates the coordinates into something useful to the user (e.g. a moving map display showing his location and locations of nearby "points of interest", a targeting display showing the relative position of a site to be attacked). Some businesses (e.g. trucking companies) program the navigation computers in the GPS unit in their vehicles to log routes, speeds, etc. to keep track of their drivers, that they aren't taking unauthorized side trips or driving unsafely. However this has nothing to do with GPS and is not part of GPS, its just another use of the data made available by that system. (MORE)
The two map coordinates or geodetic coordinates are latitude and longitude measured on the surface of the Earth's globe-shaped surface or at mean sea level or at the magnetic geoid.
GPS can be used to precisely located and target fish. Using commercially-available systems, it can successfully track a location within several feet. GPS systems can also be electronically connected to boats' steering systems and can be connected to an automatic pilot to position the boat exactly. …Two boats can communicate their location to each other accurate. If one is a processing vessel and the other a net-boat, they can coordinate their meeting efficiently. In case of emergency, a ship's exact location can be be broadcast quickly and precisely to rescue services. (MORE)
it's used to tell you where you are and how to get where you want to go
GPS is used to tell where the location of the reciever is. Each satalite sends out a coded BEEP at known intervals. Once the first BEEP is detected, then when the 2nd is received, there is a straight line bisecting the earth and continuing on in both directions out into space. This line is the only …place where those two BEEPs intersect at a given time. It takes a minimum of 4 satalites to provide a full location. A 3rd satalite limits the location to one of 3 places (draw 3 circles that bisect each other, you are at one of those 3 locations). Having a prior idea of where you started allows the GPS unit to deduce where you are with 3 satalite signals. The 4th one cements the location (and altitude) as there is only one place where all 4 BEEPs intersect at a given time. (MORE)
- to locate someone - to give directions and that is all what i know and iam looking for a third reason 2 so if anyone nows please answer asap thanks and good luck
The GPS receiver, receives time signals from satellites overhead. The difference in time, for the signal to reach the receiver on earth, will be different from each satellite and can be measured. The time differences are applied to a mathematical formula and give the position on earth, in three …dimensions (height as well). Additional information from the satellites will identify each one. An almanac built into the receiver, will determine where each satellite is in the sky. (or where they should be) This positional information is used in the calculation and the time difference signals applied to it. The system is passive. The GPS receiver does not transmit or communicate in any way with the satellites. It listens only. The atomic clocks onboard each satellite are monitored from earth and kept in synchronization. (MORE)
My first reaction when I read this question: If, when you were involved in an accident, the person or dealer whosold it to you would expect you to pay the costs to repair it, then youprobably have the right to make modifications to it, or do anything you wantto it. If you bought the car from a dea…ler, then the dealer immediatelysold the loan to a finance company. He got his full price for the car, you'remaking payments to the finance company, and they could not care less what happensto the car, just as long as you keep sending them the payments. Read the contract you signed when you took possession of the car.(You did keep the paperwork, right ?) (MORE)
The 24 GPS satellites really have no practical limit on the number of users. All the satellites do is to transmit a radio signal. There could be a billion GPS receivers that could all be using these radio signals at once. Or more.
GPS is a system of several components: . Land Component - ground stations in El Segundo, CA operated by the US Air Force. Monitors, tests, and updates satellites to correct for drift, orbital error, etc. . Space Component - 24 satellites. . User Component - receivers that decode satellite signa…ls and use the coordinates obtained for various purposes. (MORE)
The United States Air Force was a primary player in the deployment of the first GPS satellites, ground stations, and user's receivers. Europe, Russia, and Japan have their own geo-locating systems. Europe's is called, "Galileo", Russia's is called, "GLONASS", and Japan's is called, "MTSAT". Japan… has launched a few satellites, and plans to launch more in 2014 and 2015. (MORE)
Currently 32. The system was designed to work with 24 satellites, but 32 allows for greater accuracy and is less prone to failure due to malfunction of any given satellite.
Global positioning systems utilize satillites which transmit signals. There are receivers that recieve signals. More than one satillite is utilized in order to get a better location.
The GPS , short for global positioning system, is a world wide navigational system that utilizes microwave signals from a group of satellites that orbit the Earth and transmit radio signals back to a GPS receiver.
The various GPS systems in several countries employ satellites that do not use RADAR. The reason is that it's your GPS receiver that determines where you are on earth based on -Radio- signals sent from each visible GPS satellite. How it works is this . . . the satellites transmit radio signals to… earth. Your GPS receiver detects and 'reads' these radio signals. The radio signals send a lot of information, but the most important is the precise time, based on an internal atomic clock in all 32 satellites (24 of which are 'on' at any given moment) (All adjustable from one of several ground stations). Your GPS receiver, using its own precise time clock (frequently set to match the satellite's time) uses the length of time that the radio signal takes to make it from the satellite(s) to your location. Since the speed of radio waves is precisely known, the GPS receiver uses a very simple formula to calculate the distances from all the satellites that it has 'locked into'. The GPS receiver picks the 3 best signals to obtain distances from, and comes up with a good location of the receiver. The receiver can show this information on a map, either handheld or in your car, or present you with map coordinates in the form of latitude and longitude - these being useful to surveyors and others. For various technical reasons, readings from a 4th satellite are required, but 5 'locked in' satellites are often the fewest that it is practical to use. The best GPS receiver setups can determine the accurate location of the receiver (therefore, your position, also) as close as 1 centimeter (length of a sugar cube), up to within several yards. This accuracy largely depends on how many satellites are 'locked in', and how expensive the receiver is. (How many 'extras' it contains to improve accuracy. Example - I use a GPS receiver with several extras in it, and can get an earth location within 4 inches of the actual location. The cost was about $6,000 for the receiver itself. A car-mounted Tom-Tom type receiver, on the other hand, only needs to know where you are within several yards, has fewer 'extras' and costs somewhere around $200. (MORE)
The U.S. military in time of war. The Interstate Highway system was developed for the same purpose.
If you have lost your GPS and you don't have a map, it's easiest tojust ask the local people. The night sky and the position of thestars there can only tell you wether you're in the southern ornorthern hemisphere and the position of the sun at noon can - incombination with the time of year - tell yo…u whether or not you areclose or far from the Equator. But that is as specific as it gets. (MORE)