Digital Elevation Model data record the terrain height variations from the processed point-located data recorded on an airborne geophysical survey.ÃÂ The aircraft altimeter data records the height o
AUSGeoid98 data files contain a 2 minute grid of AUSGeoid98 data covering the Australian region, which you can use to interpolate geoid-ellipsoid separations for the positions...
Shoreline topography data were collected using GNSS survey methods, with a differential GPS, typically an AshTech ProMark 200 RTK-DGPS system connected to the Washington State Reference Network, opera
