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Course 336: GPS Fundamentals, Enhancements and Introduction to Differential GPS

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Course 336: GPS Fundamentals, Enhancements and Intro to Differential GPS

Instructor: Dr. Christopher Hegarty, MITRE
This course is available for private group training. | 1.8 CEUs CEUs

Course Description

This is a 3-day course that presents an overview of how the GPS systems works, its many applications, and its policy and operational considerations. It provides the fundamentals of GNSS principles and technologies including clocks and timing, orbits and constellations, and satellites and control segment functions as well as a full-day introduction to differential GPS. Note: the first two days are the same as Course 122. Day 3 is dedicated to differential GPS.


  • To give an introduction to GPS and DGPS technology, system concepts, design, operation, implementation and applications.
  • To provide detailed information on the GPS signal, its processing by the receiver, and the techniques by which GPS obtains position, velocity and time.
  • To provide and introduction to differential GPS.


  • Familiarity with engineering terms is very helpful but not essential. Non-engineers will benefit from the conceptual explanations.

Who Should Attend?

  • Engineers and technical professionals seeking explanations of GPS technology, operation, capabilities, applications, and development trends
  • Professionals in navigation, positioning, and related fields who are concerned with the capabilities, operation and principles of GPS, DGPS, and related GNSS systems.
  • System analysts and specialists concerned with position data and its use.
  • Managers concerned with GPS, GNSS activities, or the positioning field.

Materials You Will Keep

  • A color electronic copy of all course notes provided in advance on a USB drive or CD-ROM.
  • Ability to use Adobe Acrobat sticky notes on electronic course notes.
    NavtechGPS Glossary of GNSS Acronyms.
    A black and white hard copy of the course notes.
    A textbook from the list below.

Course Fee Entitles You to One of the Following Books

  • GPS Basics for Technical Professionals, P. Misra, 2019, OR
  • Introduction to GPS: The Global Positioning System, 2nd ed., Ahmed El-Rabbany, Artech House, 2006., OR
  • Global Positioning System: Signals, Measurement and Performance, P. Misra and P. Enge, 2nd ed., 2011.
  • Note: This textbook offer does not apply to private group contracts. Any books for group contracts are negotiated on a case by case basis.
Course: 336

Dr. Hegarty really connected with us and was open to all our questions, answering in a very clear and understandable way.

— Adriana Martin,
Course: 336

Very disciplined, well organized, extremely competent.

— Dariuz Zaurzewski,
Course: 336

I learned the fundamental basis of how GNSS receiver works and what it needs to provide reliable information.

— Mario G.,
Course: 336

I have appreciated the continuous link made between equations, concrete content and order of magnitude of key figures.

— Anne-cecile Bouscatel,
Course: 336
Patuxent, Maryland, February 2018

This was a very high-quality course. Much better and more informative than what I was expecting. The subject matter expertly [Dr. Hegarty] had incredible knowledge and was entertaining to listen to. Also great reference materials.

— Jerry Rodriquez Melo, Patuxent, Maryland
Course: 336
Patuxent, Maryland, February 2018

As a mechanical engineer, I regretfully, don’t have all the electrical background to understand all the concepts, but the material is well presented and expertly explained to allow me to follow the info.

— Steven Leopold, Patuxent, Maryland
Course: 336
Patuxent, Maryland, February 2018

The instructor’s [Dr. Hegarty] knowledge of the subject is very impressive. He gave a lot of interesting information on top of what was posted on the slides. I would consider this extra information very helpful. I now have quite an in-depth knowledge of how GPS works. I can definitely relate the working concepts to the technology I handle at work and to make better decisions.

— Jerry Rodriquez Melo, Patuxent, Maryland
Course: 336
Noordwijk, The Netherlands

Especially useful were the aspects related to how the user receivers make use of the GNSS signals and all the steps involved in the process, from receiving the raw RF signal to the computation of the user position.

— Marc Garcia Mateos, ESA/ESTEC
Course: 336
Noordwijk, The Netherlands

The teaching style of Dr. Christopher Hegarty was quite remarkable.

— Himanshu Sharma, UFAF
Course: 336
Noordwijk, The Netherlands

[The teaching style of the instructor was] very good in that the lecture was based on dialog rather than monolog.

— Jens Laursen, ESA/ESTEC
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