1:08:24

Vertical Datums by Dave Doyle

1:07:37

Horizontal/Geometric Datums by Dave Doyle

21:59

surveying with Geoid Models

1:01:34

2022 NGS Datum by David Newcomer

19:35

Bir Uzay Teleskobu nasıl çalışır? (Hubble ve Webb)

51:51

Geodetic Surfaces and Datums

1:05:13

GNSS Derived Heights Florida

46:35

Datum Comparison - Florida by Dave Doyle on behalf of the Geospatial Users Group.