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User:Bonne Esperance/sandbox

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Frank van Diggelen
Frank van Diggelen Portrait 2017
BornApril 2, 1964
Cape Town, South Africa
CitizenshipAmerican (USA)
EducationUniversity of the Witwatersrand (BsEE)
Alma materCambridge University (PhD EE)
Known forAssisted GPS
Scientific career
FieldsSatellite navigation
InstitutionsStanford University,
NASA,
Google
Thesis Hadamard weighting in H-infinity Robust Control
Doctoral advisorKeith Glover
Websitefrankvandiggelen.com

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 [1][2]. He was president of the Institute of Navigation from 2021 through 2023[3]. He also teaches GPS/GNSS: for many years at Stanford University[4], and online for Coursera[5]. He has written and contributed to several books on GPS/GNSS[6][7][8]. He is one of the architects of Assisted GPS, which enables GPS to work in phones[9].

Inventions

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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[10][11][12][13].

  • “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[10]
  • “Long term orbits”, reducing TTFF: providing pre-computed data so that GNSS receivers can compute accurate position without decoding the broadcast orbits[11]
  • “Doppler navigation”, reducing TTFF: using instantaneous Doppler measurements to compute position of a receiver without measuring ranges from satellites[12].
  • "Reflected GNSS signals", such as occur in cities, to compute accurate location of GNSS receivers, particularly in smartphones[13].

Education

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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[9].

Career

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HP iPAQ 6900, early use of GPS in a Smartphone, 2006.
BCM4750 GPS chip found in many smartphone models in the early 2010s.

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

  • Google, California: Indoor and Outdoor location with WiFi and GNSS[22].

Teaching

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Stanford University Consulting Professor, taught postgraduate class AA272C "Introduction to GPS", 2010–2019[4]. 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[5]; now available on YouTube[23].

Recognition and Awards

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Van Diggelen is an IEEE Fellow (2022) “for contributions to assisted global navigation satellite systems for consumer applications"[24]. 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 " [25], and an Institute of Navigation (ION) Fellow (2015) "For contributions to satellite-based navigation for consumer applications, especially mobile handheld devices" [26] [27].

In 2021 the Royal Institute of Navigation awarded him the Harold Spencer-Jones Gold Medal, the Institute's highest award[28]. In 2015 the Institute of Navigation gave him the Kepler Award[29] , "for sustained and significant contributions to the development of satellite navigation" [30]. And in 2010 the Institute of Navigation gave him the Thurlow Award[31] "For navigation solutions in assisted GPS; coarse time GPS; Doppler navigation; millisecond ambiguity; extended ephemeris; long term orbit; and A-GPS " [32].


References

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  1. ^ https://www.gps.gov/governance/advisory/members/ Retrieved 2023-01-31
  2. ^ https://www.gps.gov/governance/advisory/ 2023-01-31
  3. ^ https://www.ion.org/governance/council-members.cfm Retrieved 2023-01-15
  4. ^ a b https://explorecourses.stanford.edu/search;jsessionid=1nvpyimv1561gwy0h2sw57hw?q=AA272&view=catalog&page=0&filter-coursestatus-Active=on&academicYear=20172018 Visited 2023-02-01
  5. ^ a b "The World’s first GPS MOOC and Worldwide Laboratory using Smartphones", van Diggelen, and Enge, Stanford University; Proceedings of the ION GNSS+, Tampa, FL, USA, Sep 2015.
  6. ^ Morton, Y.Jade; van Diggelen, Frank; James, Spilker; Parkinson, Bradford (January 2021). Position, Navigation, and Timing in the 21st Century. Wiley-IEEE Press. ISBN 978-1-119-45841-8.
  7. ^ van Diggelen, Frank (2009). A-GPS: Assisted GPS, GNSS, and SBAS. Artech House. ISBN 9781596933743.
  8. ^ van Diggelen, Frank (2009) “Assisted GPS and location-based services”, Chapter of McGraw-Hill Encyclopedia of Science & Technology 2009, pp 33-36, McGraw-Hill publishers, 2009 ISBN 9780071613668
  9. ^ a b "Oral History, Frank van Diggelen" Interview by Charles Rino, Computer History Museum 2018-08-23, Catalog Number 102738864, Lot Number X8744.2019 https://www.computerhistory.org/collections/catalog/102738864 Retrieved 2023-02-01. Transcript: https://archive.computerhistory.org/resources/access/text/2018/11/102738864-05-01-acc.pdf Retrieved 2023-02-01 Video: https://www.youtube.com/watch?v=Xdx67EBFiCA Retrieved 2023-02-01
  10. ^ a b “Coarse-time GNSS” US 6417801, "Method and apparatus for Time-free processing of GPS signals" . Also US 6734821 ; US 6937187 ; US 7245253 ; US 7245255 ; US 7701389 ; US 7940214 ; US 8692712 .
  11. ^ a b “Long term orbits” US 6542820, "Method and apparatus for generating and distributing satellite tracking information" . Also US 6411892 ; US 6487499 ; US 6510387 ; US 6560534  US 6587789 ; US 6651000 ; US 6703972 ; US 6704651  US 6813560 ; US 6829535 ; US 6853916 ; US 6958726 ; US 7158080 ; US 7443340 ; US 7548816 ; US 7589667 ; US 7693660 ; US 8032301 ; US 8090536 ; US 8164518 ; US 8212719 ; US 8358245 ; US 8514126 ; US 8930137 ; US 8963773 ; US 9274225 ; US 9599720 .
  12. ^ a b “Doppler navigation” US 7133772, "Method and apparatus for navigation using instantaneous Doppler measurements from satellites" . Also US 7595752 ; US 7944394 ; US 7987048 ; US 8134500 ; US 8581779 ; US 8643541 .
  13. ^ a b “Reflected signals” US 11428822, "Methods and systems for location determination" . Also US 11391848 ; US 11275179 ; US 11391848 ; US 11428822 ; US 11500110 ; US 11531118 .
  14. ^ “Positioning Aids-to-Navigation with GPS,” J. Spalding, S. Flynn, USCG, F. van Diggelen, Navsys, ION Sat Div Int’l Tech Mtg, Salt Lake City, Sept 1993.
  15. ^ “Flight Test Results of a Pseudolite-Based Precision Approach and Landing System,” E.F.C. LaBerge, A. Brown, F. van Diggelen, T. Kelecy, Navsys, Proceedings of ION Sat Div Int’l Tech Mtg, Salt Lake City, Sept 1993.
  16. ^ “Flight Test Results Using Carrier Phase Kinematic Solutions for Aircraft Precision Approach and Landing,” A. Brown, F. van Diggelen, T. Kelecy, P. Brown, Navsys, Proceedings of ION Sat Div Int’l Tech Mtg, Colo Springs, CO, June 1994
  17. ^ “Boundary layer tropospheric effects on airborne on-the-fly ambiguity resolution,” A. Brown, F. van Diggelen, Navsys, Proceedings of the International Symposium on Kinematic Systems in Geodesy, Geomatics and Navigation, Banff, AB, Canada. Vol. 30. 1994
  18. ^ “Ashtech RTZ, Real-Time Kinematic GPS with OTF Initialization”, S. Gourevitch, F. van Diggelen, X. Qin, M. Kuhl, Proceedings of ION-GPS-95, Palm Springs, California, September 1995.
  19. ^ "Indoor GPS theory & implementation," F. van Diggelen, Global Locate Inc., 2002 IEEE Position Location and Navigation Symposium (IEEE Cat. No.02CH37284), Palm Springs, CA, USA, 2002, pp. 240-247, doi: 10.1109/PLANS.2002.998914.
  20. ^ "Broadcom Buys Global Locate, Maker Of GPS Chips" https://www.barrons.com/articles/BL-TB-3552 Visited 2023-01-31
  21. ^ “Who’s your Daddy? Why GPS rules GNSS”, F. van Diggelen, Broadcom and Stanford, Keynote. Stanford PNT Symposium, Stanford, CA, USA. 14 Nov 2013 http://web.stanford.edu/group/scpnt/pnt/PNT13/2013_Presentation_Files/12-vanDiggelen-PNT13.pdf Visited 2023-02-01
  22. ^ Google I/O 2019, "One meter location accuracy from Android", F. van Diggelen, R. Want, W. Wang, Google, https://www.youtube.com/watch?v=vywGgSrGODU Visited 2023-02-01
  23. ^ GPS: An Introduction to Satellite Navigation playlist on YouTube
  24. ^ https://services27.ieee.org/fellowsdirectory/keywordsearch.html?keyword=diggelen Visited 2023-01-31
  25. ^ https://rin.org.uk/news/news.asp?id=408631&hhSearchTerms=%22frank+and+van+and+diggelen%22 Visited 2023-01-31
  26. ^ https://www.ion.org/awards/ion-fellows.cfm Visited 2023-01-31
  27. ^ https://www.ion.org/awards/2015-ionfellow-vanDiggelen.cfm Visited 2023-01-31
  28. ^ https://rin.org.uk/general/custom.asp?page=Awards Visited 2023-01-31
  29. ^ https://www.ion.org/awards/kepler-award.cfm Visited 2023-01-31
  30. ^ https://www.ion.org/awards/2015-Kepler.cfm Visited 2023-01-31
  31. ^ https://www.ion.org/awards/thurlow-award.cfm Visited 2023-01-31
  32. ^ https://www.ion.org/awards/2010-Thurlow-vanDiggelen.cfm Visited 2023-01-31


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