Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

I am confused with all these acronyms: NAD83, NAD83(CSRS), ITRF, CGVD28, NAVD88, NGVD29, IGLD85, GSD95, CGG2000, HTv2.0, GEOID03, etc. What is the difference?

April 26, 2017Acronyms cgvd28 confused CSRS itrf NAD83 navd88 NGVD29

0

Posted

I am confused with all these acronyms: NAD83, NAD83(CSRS), ITRF, CGVD28, NAVD88, NGVD29, IGLD85, GSD95, CGG2000, HTv2.0, GEOID03, etc. What is the difference?

1 Answer

0

Posted

Traditionally, geodesy consists of two types of reference frames: a 2D horizontal network (latitude and longitude) and a 1D vertical network (height above mean sea level). Today, with the immersion of satellite positioning, we are now taking about 3D networks (latitude, longitude and ellipsoidal height).