User:Bonne Esperance/sandbox

Frank van Diggelen is a Distinguished Engineer at Google, where he works on precise location. He serves on NASA’s Position, Navigation, and Timing Advisory Board, which advises the U.S. government on GPS-related policy and planning. He was president of the Institute of Navigation from 2021 through 2023. He also teaches GPS/GNSS: for many years at Stanford University, and online for Coursera. He has written and contributed to several books on GPS/GNSS. He is one of the architects of Assisted GPS, which enables GPS to work in phones.

Inventions
He has authored over one hundred US Patents, all related to location and GNSS. Most fall into the following four categories related to reducing Time-to-First-Fix (TTFF), and/or increasing accuracy.


 * “Coarse-time GNSS”, reducing TTFF: computing position before the broadcast satellite time has been decoded by the receiver. This technique simultaneously computes the receiver position and the satellite positions


 * “Long term orbits”, reducing TTFF: providing pre-computed data so that GNSS receivers can compute accurate position without decoding the broadcast orbits


 * “Doppler navigation”, reducing TTFF: using instantaneous Doppler measurements to compute position of a receiver without measuring ranges from satellites.


 * "Reflected GNSS signals", such as occur in cities, to compute accurate location of GNSS receivers, particularly in smartphones.

Education
Van Diggelen studied electrical engineering at The University of the Witwatersrand, South Africa (BSc) and did his PhD at Cambridge University, England. He is also a graduate of the South African Naval College, Gordon’s Bay, where he studied Navigation before being appointed a Navigation Officer in the South African Navy.

Career
Following his PhD, van Diggelen has worked exclusively in location:


 * Navsys Corporation, Colorado: GPS Research work for the US Coast Guard, and US Air Force.


 * Ashtech, California: GPS receivers for Differential GPS and Real Time Kinematic (centimeter accurate) location.


 * Global Locate, California: GPS chips for Assisted GPS . Acquired by Broadcom Inc.


 * Broadcom Inc., California: GNSS chips for Assisted GNSS.


 * Google, California: Indoor and Outdoor location with WiFi and GNSS.

Teaching
Stanford University Consulting Professor, taught postgraduate class AA272C "Introduction to GPS", 2010–2019. Co-creator and lecturer for the first GPS MOOC (Massive Open Online Course) in 2014, hosted on Coursera; worldwide participation of 31,000 students from 192 countries ; now available on YouTube.

Recognition and Awards
Van Diggelen is an IEEE Fellow (2022) “for contributions to assisted global navigation satellite systems for consumer applications" . He is also a Royal Institute of Navigation Fellow (2018), "In recognition of his innovative contributions to the science, technology and availability of mass-market GNSS ", and an Institute of Navigation (ION) Fellow (2015) "''For contributions to satellite-based navigation for consumer applications, especially mobile handheld devices''".

In 2021 the Royal Institute of Navigation awarded him the Harold Spencer-Jones Gold Medal, the Institute's highest award. In 2015 the Institute of Navigation gave him the Kepler Award, "for sustained and significant contributions to the development of satellite navigation". And in 2010 the Institute of Navigation gave him the Thurlow Award "For navigation solutions in assisted GPS; coarse time GPS; Doppler navigation; millisecond ambiguity; extended ephemeris; long term orbit; and A-GPS " .