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I thought I have read somewhere that the accuracy of Android's GPS is about 10 cm?
Can anyone verify or correct this? Reason being is that my application I am trying to develop keeps track of locations an user has visited and it would help me out tremendously to know the margin of error I can expect.
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GPS: Maps uses satellites to know your location up to around 20 meters. When you're inside buildings or underground, the GPS is sometimes inaccurate. Wi-Fi: The location of nearby Wi-Fi networks helps Maps know where you are. Cell tower: Your connection to mobile data can be accurate up to a few thousand meters.
According to IEEE Spectrum, Broadcom is starting to make a mass-market GPS chip that can pinpoint a device's accuracy to within 30 centimeters, or just under one foot. That's compared to today's GPS solutions, which typically have a range of three to five meters, or up to 16 feet away.
GPS satellites broadcast their signals in space with a certain accuracy, but what you receive depends on additional factors, including satellite geometry, signal blockage, atmospheric conditions, and receiver design features/quality. For example, GPS-enabled smartphones are typically accurate to within a 4.9 m (16 ft.)
10 centimeters? No chance. In any event, Android is just a device OS; the actual accuracy of a GPS device is dependent on the device's chipset. Android may be theoretically capable of accomodating devices with that level of accuracy, but that's it.
The accuracy of GPS devices is normally not presented as a simple distance, anyway. Usually, a device's accuracy is given as a distance along with the percentage of measurements that are within that distance from the true location. A typical accuracy for a hand-held GPS device would be something like 30% of your measurements within 50 meters of the true position (yes, the devices are typically that inaccurate).
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