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Fundamentals of Geodesy Part III - Contemporary Geometric Datums 1

Fundamentals of Geodesy Part III - Contemporary Geometric Datums 1

Fundamentals of Geodesy Part III - Contemporary Geometric Datums 1

David Doyle
David Doyle
on behalf of GeoLearn LLC

$49.00 $ 49.00 $ 49.00

$ 49.00 49.00 49.00
49.00 $ 49.00 49.00 49.00
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Launch date: 25 Nov 2014
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Last updated: 01 Feb 2021

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Developments in space-based positioning, especially the NAVSTAR Global Positioning System (GPS) have revolutionized the ability to capture high accuracy positions anywhere in the world. The impact on the design and maintenance of classical horizontal datums has been unprecedented in history of geodesy. The transition from locally defined datums to those that are more globally referenced and provide considerably higher positional integrity has been a challenge for national geodetic institutions around the world. This course will outline the various efforts by the National Geodetic Survey to adapt to these changes and provide improved realizations and products and services to support the increasing demands of diverse disciplines.


1. Differences between NAD 27 and NAD 83
2. Rational for changing the national reference ellipsoid
3. Integration of data into the National Spatial Reference System
4. National resurvey of the United States with GPS
5. Evolution of the network of Continuously Operating Reference Stations
6. Development of the Online Positioning User Service
7. Introduction to global reference frames.
David Doyle

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David Doyle
on behalf of GeoLearn LLC

Dave Doyle joined the National Geodetic Survey in 1972, and held the position of chief geodetic surveyor at his retirement in January, 2013. He was responsible for the development, technical design and management of plans and programs that enhance the United States National Spatial Reference System. Mr. Doyle began his career as a geodetic surveyor in the U.S. Army in 1967. From 1970 to 1972 he worked for a private surveying company near Washington D.C. where he was responsible for completing boundary, topographic and engineering surveys while he pursued undergraduate studies in geodesy and mathematics at the George Washington University. During his time at NGS his experiences included all phases of geodetic triangulation, astronomic positioning, leveling, GPS data collection, data analysis, datum transformations, network adjustments, and data publication. He has also provided technical support to various countries for the modernization of national and regional geodetic reference systems in Caribbean and Central America, Africa, and the Pacific. Mr. Doyle’s activities also include 33 articles in national and local surveying publications and he has conducted more than 380 workshops and seminars detailing the numerous aspects of geodesy and the National Spatial Reference System.

Mr. Doyle is a past president of the American Association for Geodetic Surveying, a Fellow member of the American Congress on Surveying and Mapping, a charter member of the Geographic and Land Information Society, and he has served on the U.S. delegation to the International Federation of Surveyors. Mr. Doyle is also an active member of the District of Columbia, Maryland and Virginia surveyors’ professional associations and was awarded the 2008 Surveyor of the Year by the Maryland Society of Surveyors.

Current Accreditations

This course has been certified by or provided by the following Certified Organization/s:

  • Texas A&M University Corpus Christi
  • 1.00 Hours

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