Without GR, GPS will not be built

送交者: gyro 于 2009-05-05, 16:52:14:

回答: The question is: without GR, how do you know if the clock is right? 由 steven 于 2009-05-05, 16:41:37:

No doubt about this.

My guess is, suppose for determining position the data received on the ground from a particular GPS sattelite requires an adjustment of x nanoseconds per day in practice, and relativity predicts an adjustment of y nonoseconds per day. I guess in practice x is only on the same order of y.

所有跟贴:

GPS uses 4 satellites to determine the position (time, and space) - steven (71 bytes) 2009-05-05, 16:57:48 (322580)
- My first guess is calibration and interpolation - gyro (134 bytes) 2009-05-05, 17:03:44 (322583)
  - since it is not linear, the interpolation works only if it - steven (51 bytes) 2009-05-05, 18:53:24 (322597)

加跟贴