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Course 122: GPS Fundamentals and Enhancements

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Course 122: GPS Fundamentals and Enhancements

Instructor: Dr. Chris Hegarty, MITRE
1.2 CEUs
Onsite & PublicOur most requested courses are offered at different public venues two to three times per year. Most of our courses also can be taught onsite at your location. Most on-site courses can be customized to your needs. Read more about our on-site course options.
July 14-15, 2020 $1499

Course Description

This is a 2-day course that presents an overview of how the GPS systems works, its historical evolution, its many applications, and its policy and operational considerations. It provides the fundamentals of GPS principles and technologies including clocks and timing, orbits and constellations, and satellites and control segment functions. See details for more information about this course. (Note: This course is the same as days 1 and 2 of Course 346 and Course 356.)


  • To give a comprehensive 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


  • Some familiarity with engineering terms is helpful but not essential.

Who Should Attend?

  • Engineers and technical professionals seeking conceptual and detailed 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 will be provided on a USB Drive or CD-ROM. Bringing a laptop to this class is highly recommended; power access will be provided.
  • A black and white hard copy of the course notes will also be provided.
  • 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 book offer does not apply to on-site contracts. Any books for on-site group contracts are negotiated on a case by case basis.)

Monday Morning
Fundamentals of GPS Opertaion. Overview of how the system works. U.S. policy and current status.

GPS System Description
● Overview and terminology
● Principles of operation
● Augmentations
● Trilateration
● Performance overview
● Modernization

GPS Policy and Context
● Condensed navigation system history
● GPS policy and governance
● Modernization program
● Ground segment
● Other satellite navigation systems

GPS Applications
● Land
● Marine
● Aviation
● Science
● Personal navigation
● Accuracy measures
● Error sources


Monday Afternoon

Legacy GPS Signal
● Signal structure and characteristics
● Modulations: BPSK, DSSS, BOC
● Signal generation
● Navigation data

Measurements and Positioning
● Pseudorange and carrier phase measurements
● Least squares solution
● Dilution of precision
● Types of Positioning solutions

GPS Receiver Basics
● Types of receivers
● Functional overview
● Antennas

Course: 122
Falls Church, VA

Learning the terms and how they play a role in GPS and how equipment processes GPS signals [was useful to my work]. The 2-day course discussed many of the terms I deal with in my job.

— Frank Crisafulli, USCG
Course: 124
USCG, Alexandria, VA

“The instructor gave enough technical details without losing the non-technical audience. I also found the instructor’s wit and humor very effective. Well done!”

— Name withheld upon request, USCG
Course: 124
USCG, Alexandria, VA

“[My goal was to] learn the basics of GPS in order to understand the terminology and background during conversations and briefs. The course met these objectives very well.”

— Name withheld upon request, USCG
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