2016-03-27, 17:22
Hello,
caused by working with "mds" and station numbers given by raw TOA material I wondered about two questions:
1) The network uses GPS to determine the location of a station and to provide them with a precise timestamp.
But in what way is the earth approximated as an ideal spheric?
Could it be that the network uses the WGS-84 ellipsoid like e.g. aviation does?
2) Looking for the smallest number of stations required I got the following values:
REGION NUMBER
Europe 12
America 11
Oceania 7
(Indeed I am quite sure only six or seven stations were needed a couple of years ago concerning Europe.)
In what way did/ does the smallest required number of stations change, concerning the three regions?
best regards
PothThom
and thanks for your time...
caused by working with "mds" and station numbers given by raw TOA material I wondered about two questions:
1) The network uses GPS to determine the location of a station and to provide them with a precise timestamp.
But in what way is the earth approximated as an ideal spheric?
Could it be that the network uses the WGS-84 ellipsoid like e.g. aviation does?
2) Looking for the smallest number of stations required I got the following values:
REGION NUMBER
Europe 12
America 11
Oceania 7
(Indeed I am quite sure only six or seven stations were needed a couple of years ago concerning Europe.)
In what way did/ does the smallest required number of stations change, concerning the three regions?
best regards
PothThom
and thanks for your time...
Stations: 416