International Advisory Council

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The International Advisory Council provides advice to the Foundation Board of Directors on technical and policy issues. Much of its work is done electronically through email and virtual meetings. Semi-annual in-person meetings are normally in held in the Washington, DC area around the time of US National PNT Advisory Board meetings.


Picture of Pat Diamond

Dr. Pat Diamond

Dr. Pat Diamond, Principal, Diamond Consulting, has been at the forefront of development of timing and synchronization technologies for over 20 years. His activities include leading the development of the first monolithic silicon device for synchronization in SONET/SDH networks, and as the original evangelist for creating a version of IEEE 1588 for use in packet wide area networks and leading the development of the only fully integrated 1588v2 system on a chip currently deployed in over 2 million base stations.
Pat is and has been active in ITU-T, IEEE and IETF standards development.
He has worked at NASA, McDonnell Douglas, Data General and Semtech in senior and executive engineering and business development roles. He has been awarded BSEE, BSCS and Ph.D degrees.


Professor Jiwon Seo

Professor Jiwon Seo is with Yonsei University of the Republic of Korea (ROK). He is also a member of the eLoran Advisory Committee of the Ministry of Oceans and Fisheries (MOF) of the ROK. Working closely with the MOF, he regularly presents about the nation’s eLoran and other navigation initiatives at international forums. He announced the Korean eLoran program at the European Navigation Conference in 2013 to the great interest of all attendees. An invited speaker at the 2013 NATO Transportation Seminar, he was also a keynote speaker at the 2014 GNSS Vulnerabilities and Resilient PNT Conference and gave an update on the Korean eLoran program at the Resilient PNT Forum II in 2015. Professor Seo received his Ph.D. from Stanford University in 2010.


Andrew Bach

Andrew F. Bach is a consultant advising on the next generation of ultra-high-performance infrastructure and globally synchronized precision timing for the Financial Service Sector. His experience includes formally serving as a senior technical advisor at Pico Systems, Chief Architect for the Financial Services Industry vertical at Juniper Networks, and SVP, Global Head of Network Services, at the New York Stock Exchange (NYSE Euronext). He is the chair of the Center for Advanced Technology in Telecommunications (CATT) advisory board at NYU Tandon school of engineering (Polytechnic University) in New York where he has also been an adjunct professor. In 2000, he won the prestigious Computerworld Smithsonian Award for his role in integrating IP multicasting technology in the financial services industry. Mr. Bach also holds multiple patents in communications technologies.

Photo of Guy Buesnel

Guy Buesnel, CPhys, FRIN
PNT Security Technologist, Spirent

Guy has more than 20 years’ experience working protecting GNSS Receivers from emerging threats , having started his career as a Systems Engineer involved in the development of GPS Adaptive Antenna Systems for Military Users. Guy is Spirent’s specialist technologist covering the areas of PNT threats and mitigation. Guy holds a BSc Honours degree in Physics with Atmospheric Physics and a Master’s Degree in Communications Engineering. Guy is a Chartered Physicist and a Fellow of the Royal Institute of Navigation.

Photo of Guy Buesnel

Prof. Krzysztof Czaplewski

Krzysztof Czaplewski is a professor at the Gdynia Maritime University. He is President of International Association of Institutes of Navigation and President of Polish Navigation Forum. He was Chairman of European Group of Institutes of Navigation Council (2012-2015, 2019-2021). From 2015-2018 he served as the representative of IAIN in International Committee on GNSS. He is a retired Polish Navy Captain and served as the Dean of Faculty for Navigation and Naval Weapon at the Polish Naval Academy. Prof. Czaplewski is author or co-author for more than 130 science publications (articles, papers and 10 books) published in 11 countries across 4 continents.

Photo of Guy Buesnel

David Jansen

David Jansen is a Senior Advisor at Blank Rome Government Relations, LLC where he guides clients on matters regarding maritime transportation; port infrastructure and operations; national security; GPS resilience; offshore renewable energy; and issues concerning ocean, coastal, and wildlife science and conservation. Prior to joining Blank Rome, Mr. Jansen most recently served as the Democratic Staff Director for the Coast Guard & Maritime Transportation Subcommittee in the U.S. House of Representatives and oversaw all policy and legislative business, including oversight of annual maritime budgets totaling over $13 billion. Mr. Jansen’s federal career spanned more than 28 years where he facilitated enactment of several biennial Coast Guard Authorization Acts, including enactment of the Resilient Timing Act in 2019, and enactment of numerous other laws, notably bills establishing programs for integrated ocean observations, the advancement of Blue Technologies, and prevention and control of marine debris and plastic pollution.

Logan Scott

Logan Scott

has over 40 years of military and civil GPS systems engineering experience. He is a consultant specializing in radio frequency signal processing and waveform design. At Texas Instruments, he pioneered approaches for building high-performance, jamming-resistant digital receivers and adaptive arrays.  At Omnipoint (now T-Mobile), he developed spectrum sharing techniques that led to a Pioneer’s preference award from the FCC. Logan has been an active advocate for improved civil GPS location assurance for over 20 years and was the first to describe how civil navigation signals could be authenticated using delayed key concepts central to the Chimera signal. For the past 6 years he has been developing advanced signal concepts for NTS-3, AFRL, and the University of Colorado. He has also been active in developing LEO system architectures. Logan is a Fellow of the Institute of Navigation and a Senior Member of IEEE. In 2018 he received the GPS World Signals award. He is the author of “Interference: Origins, Effects, and Mitigation” in PNT21 and holds 46 US patents.

In Memoriam

Professor David Last

Professor David Last was a founding member of our organization. He tragically perished in an airplane crash on the 25th of November 2019. He was a great friend and colleague. His passing leaves a lasting gap in the world-wide PNT community. We are all better for having known him.​