Timeline for GPS Working Principle [closed]
Current License: CC BY-SA 3.0
8 events
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Jun 5, 2013 at 14:48 | history | closed |
Emilio Pisanty dmckee --- ex-moderator kitten |
off topic | |
Jun 5, 2013 at 14:30 | comment | added | Olin Lathrop | The answer is C. The receiver measures the relative time between satellites, which is why it needs 4 instead of 3 to solve the simultaneous equations. It also knows where the satellites are. The orbits are fairly predictable, and the small perturbations are measured and also broadcast by the satelites in something called the "ephemeral" data. You can go even further and compare your received data to that received at a known nearby location. All these tricks are used in real units to various degrees. | |
Jun 5, 2013 at 14:18 | review | Close votes | |||
Jun 5, 2013 at 14:53 | |||||
Jun 5, 2013 at 9:58 | answer | added | neutrino | timeline score: 1 | |
Jun 5, 2013 at 9:56 | comment | added | neutrino | The receiver knows from which satellites is receiving data, and the timestamp and identity of each of them , so it can infer the current position, knowing where each satellite is actually. | |
Jun 5, 2013 at 9:51 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
It seems the homework tag applies even if it is not actual homework
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Jun 5, 2013 at 9:48 | review | First posts | |||
Jun 5, 2013 at 10:08 | |||||
Jun 5, 2013 at 9:32 | history | asked | user25431 | CC BY-SA 3.0 |