Google used millions of Android phones to map the worst enemy of GPS
In a paper published this week in Nature, Google researchers demonstrated they were able to use GPS signal measurements ...
New Scientist11d
Millions of phones create most complete map ever of the ionosphere
Researchers mapped Earth’s ionosphere, part of the upper atmosphere, using signal data from 40 million phones – a method that ...
Nature12d
Google uses millions of phones to map Earth’s ionosphere and improve GPS
When the air is partly ionized, freely moving electrons slightly slow down the radio signals travelling to Earth from GPS and ...