Geoid files

You must not change this data in a downloaded GSP file because the GSP file will then not describe the contents of the geoid binary file. Australian geoid, version 1. The grid for this geoid is S8 0 to S45 59; E 0 to E Coverage is from N24 to N58 and from W to W The grid is world-wide, with 2. The following geoid data file links are to the files at the NGS web site. Geoid file gu All rights reserved.

No Warranty. These digital files are provided on an "as is" basis and Canada makes no guarantees, representations or warranties respecting these files, either expressed or implied, arising by law or otherwise, including but not limited to, effectiveness, completeness, accuracy or fitness for a particular purpose.

Any use whatsoever of these digital files shall constitute acceptance of all terms and conditions detailed in the license included with the product documentation. This program allows the determination of orthometric heights H, height above mean sea level at stations where the geometric heights h, ellipsoidal height are measured using the Global Positioning System GPS or other methods.

The orthometric heights are calculated by the intermediary of a geoid model. Geoid file cggn Geoid file CGGe. This model is used to measure surface elevations with a high degree of accuracy.

Scientists at the National Geodetic Survey are working on a year-long project to make accurate height measurement better, faster, and cheaper. National Geodetic Survey. National Spatial Reference System. NGS Geoid information. Download Please note that this model includes a wide, flat base that makes it easier to print on most home 3D printers. Download the data files for your computer's operating system.

Data files for use on a Windows platform little endian are reformatted accordingly. For questions about this page or downloading problems, contact the Webmaster. Grid 0. Grid 1. Grid 2. Grid 3.