GPS surveying "relative to astronomical reference"? I don't think so.
-John ============== > [email protected] wrote: >>> When you start getting to less than a meter.. For absolute, you need to >>> start worrying about stuff like solid earth tides, plate movement, a >>> whole >>> host of things are all contributors in that 10-100 cm range. >> >> Absolute and relative... can be a word game. It depends what DATUM >> (coordinate system) you want to have your answer in. > > > I use relative to mean "between measurements that are made locally" and > absolute to mean "relative to astronomical reference" (e.g. some ECI > frame) > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
