Airport Aerial Photography

Shoreline Mapping/Shoreline Aerial Photography

Height Modernization

Geodetic Leveling

Completed Projects

Current Projects

Contractor Requirements

Contact Information

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Height Modernization is a series of activities designed to advance and promote the determination of elevations by GPS surveying, rather than by spirit leveling. It includes research and development activities seeking to improve the determination of geometric elevations by GPS surveys as well as activities seeking to improve the determination of geoid height. It includes activities leading to improved height determination both for the static surveyor and for the moving navigator.

Examples of tasks that may be included in a Height Modernization Project:

• Planning
• Reconnaissance and Mark Recovery
• Mark Setting
• GPS Observations and Station Descriptions
• GPS Data Processing, Data Analysis, and Adjustment
• Data Submittal
• Preparing Reports, Manuals, and Training Aids
• Providing Training

If you'd like more information on Height Modernization, or are interested in performing contracting work in this area, visit NGS's Height Modernization page or view requirements within the Scope of Work summary.