This one also has support for EGM96 for geoid referencing, along with UTM support. The app is entirely free , with no ads or unnecessary permissions. It has slight calibration issues and seems to ...

It is provided on polar stereographic grids at 500 m grid spacing. The grid covers all of Antarctica north of 86° S. Elevations are reported as centimeters above the datums, relative to both the WGS ...

It is provided on polar stereographic grids at 1 km grid spacing. The grid covers all of Greenland south of 83° N. Elevations are reported as centimeters above the datums, relative to both the WGS 84 ...

A library to convert between EGM96-relative altitudes and WGS84 ellipsoid-relative altitudes. Works both in the browser and node.js, you can test the result on the demo page.. It uses the EGM96 sample ...

In 2001, the National Imagery and Mapping Agency (NIMA) initiated a project with the Naval Surface Warfare Center (i) to examine transformations from national vertical data to the World Geodetic ...

I've been trying to apply vertical transformation of data using pyproj. For example, converting heights from the WGS84 ellipsoid to the EGM96 geoid. Using the EGM .gtx files of PROJ here, I get a good ...

The coefficients of correlation between the EGM96-derived heights from the GPS survey data and that of ALOS W3D30, SRTM30 and ASTER GDEM2 are 0.9999, 0.9998 and 0.9993 respectively meaning that each ...

ABSTRACT: Digital Elevation Models (DEMs) depict the configuration of the earth surface and are being applied in many areas in earth and environmental sciences. In this study, the accuracy of the ...

An important early prediction of Einstein's general relativity1,2,3 was the advance of the perihelion of Mercury's orbit, whose measurement provided one of the classical tests of Einstein's theory4.

In fiscal year 2001, the National Imagery and Mapping Agency (NIMA) initiated a project (i) to examine selected national vertical datums in order to evaluate their consistency with orthometric heights ...