About the Author: Dr. Frank van Diggelen
Dr. Frank van Diggelen has been doing navigation his entire professional career. At age 18 he was a midshipman and later navigation officer in the South African Navy before going on to college. Since then he has worked on GPS, GLONASS and A-GPS for Navsys, Ashtech, Magellan, and Global Locate. Following the acquisition of Global Locate, he is now Technical Director for GPS Systems and Chief Navigation Officer of Broadcom Corporation; and serves on the technical advisory board of NavtechGPS.
On weekends he is navigator and tactician aboard a racing yacht in Santa Cruz, California.
Van Diggelen is also a passionate teacher. At the University of the Witwatersrand, South Africa, he ran the mathematics department of an all-volunteer weekend high school for children from the townships of Soweto and Alexandra. In the United States he has taught a basic navigation class for junior-high children; and he has taught numerous professional GPS classes for, among others, NavtechGPS, GIS World, and the IEEE. More than 500 engineers and scientists have attended Dr. van Diggelen’s GPS classes.
It is the combination of van Diggelen’s passions for navigation, GPS, and teaching that led to this book.
Dr. van Diggelen is the inventor of coarse-time GNSS navigation, co-inventor of Long Term Orbits for A-GPS, and holds approximately 40 issued, and many more pending, U.S. patents on A-GPS. He obtained his bachelor’s degree at the University of the Witwatersrand, South Africa, and Ph.D. in Electrical Engineering from Cambridge University, England; both on full academic scholarships.

Author’s insights, or What were you thinking?
A few paragraphs discussing the reasons and inspiration for writing the book.

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