'Height modernization program' diaporamas de présentation

National Height Modernization Program Overview January 24, 2006 Juliana Blackwell

485 views • 34 slides

The Height Modernization Program in the United States and

The Height Modernization Program in the United States and the Future of the National Vertical Reference Frame. Renee Shields National Geodetic Survey, U.S.A. Historical National Vertical Datums in the United States. Orthometric heights Up to National Geodetic Vertical Datum of 1929 (NGVD 29)

154 views • 15 slides

A Zonal Approach to National Height Modernization

A Zonal Approach to National Height Modernization Gilbert J. Mitchell National Geodetic Survey Silver Spring, MD. National Spatial Reference System (NSRS) NSRS is a consistent coordinate system that defines latitude, longitude, height, scale, gravity, and orientation for the entire U.S.

129 views • 12 slides