William "Willie" Shelton is an independent consultant. He also serves on several corporate boards and advisory boards and is Chairman of the Board of Trustees for a non-profit organization in Colorado.

General Shelton retired as Commander, Air Force Space Command, in September 2014. During his career, he commanded space operations units at every level and held staff positions in a wide range of Air Force and Department of Defense organizations. In his final assignment, he led a team of over 40,000 at Air Force Space Command to provide space and cyberspace operational forces, as well as acquisition of space systems. In this role, he was responsible for an annual budget of over $10 billion.

During his Air Force career, General Shelton was a Space Shuttle controller for the first 18 missions, commander of Global Positioning System operations during the initial deployment of the constellation, and commander of the Air Force's largest ballistic missile wing. He also commanded all Department of Defense space operations during internationally significant events such as the Chinese anti-satellite test in 2007 and a North Korean Taepo Dong missile launch initially thought to be threatening Hawaii. He served as the Chief Information Officer of the Air Force and the director of the Air Force Headquarters staff during one of the most turbulent periods in the Air Force's history. While leading Air Force Space Command, he drove the development of new satellite architectural concepts to address growing space threats amid significant fiscal challenges. Finally, he led the rapid maturation of cyberspace forces to enhance both the defensive and offensive cyber capabilities of the Air Force.

General Shelton earned a Bachelor of Science degree in astronautical engineering from the United States Air Force Academy in 1976, a Master of Science degree in astronautical engineering from the Air Force Institute of Technology in 1980, and a Master of Science degree in national security studies from the National War College in 1995.

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 PNT 21 and holds 46 US patents

Lieutenant General Larry D. James, USAF, Ret., was appointed Deputy Director of the Jet Propulsion Laboratory in August 2013. At JPL he is the Laboratory's Chief Operating Officer responsible to the Director for the day-to-day management of JPL's resources and activities. This includes managing the Laboratory's solar system exploration, Mars, astronomy, physics, Earth science, interplanetary network programs, and all business operations. These activities employ 6200 scientists, engineers, technicians, and business support personnel, generating $2.6 billion in annual revenues.

Prior to his retirement from the Air Force and his appointment as JPL Deputy Director, Lt Gen James was the Air Force Deputy Chief of Staff for Intelligence, Surveillance and Reconnaissance at the Pentagon. He was responsible to the Secretary and Chief of Staff of the Air Force for policy formulation, planning, evaluation, oversight, and leadership of Air Force intelligence, surveillance and reconnaissance capabilities and led more than 20,000 Intelligence, Surveillance and Reconnaissance officers, enlisted and civilians across the Air Force ISR Enterprise.

Lt Gen James received his Bachelor of Science in Astronautical Engineering (1978) from the US Air Force Academy (Distinguished Graduate) and his Master of Science in Aeronautics and Astronautics (1983) from the Massachusetts Institute of Technology, Cambridge MA. He was also a Draper Fellow at the Charles Stark Draper Laboratory in Cambridge MA and is a Fellow of the American Institute of Aeronautics and Astronautics (AIAA).

James' 35 year military career included assignments as a Space Shuttle Payload Specialist, GPS Program Manager, Titan IV Launch Director and Commander of the 50th Space Wing at Schriever AFB, CO. James has also served on the staffs of US Space Command, Air Force Space Command, and HQ Air Force. He was commander of the 14th Air Force at Vandenberg AFB, responsible for all military satellite, launch and C2 operations, and was Director, Signals Intelligence Systems Acquisition and Operations Directorate, National Reconnaissance Office, Washington, D.C. He was the Director, Space Forces for Operation Iraqi Freedom at the Combined Air Operations Center, Prince Sultan Air Base, Saudi Arabia.

The career of Lieutenant General Michael A. Hamel, USAF, Retired, spans over 50 years in government and industry in the national security space sector, with broad responsibilities and experience in space policy and strategy, systems development & acquisition, space operations and command and business leadership. He is currently an independent consultant and advisor supporting USG space programs. After retiring from the USAF in 2008, Gen Hamel spent ten years in the space industry as Senior Vice President of Corporate Strategy and Relations for Orbital Sciences Corporation, and subsequently as Vice President and General Manager for Lockheed Martin Commercial Space.

Gen Hamel’s final assignment in the USAF was as Commander, Space and Missile Systems Center, and AF Program Executive Officer (PEO) for Space in Los Angeles, CA, where he led the development, acquisition and sustainment of all AF space and launch systems and programs. Prior to that, he was the Commander of 14th Air Force responsible for all AF space operations in support of U.S. STRATCOM and combatant commands across the globe. Before these commands, Gen Hamel led space requirements, operations and integration at HQ USAF and AF Space Command, including implementation of the DOD Space Organization and Management initiative (Rumsfeld Commision) in 2000. In an earlier assignment he was the Military Advisor to the Vice President on defense, nonproliferation and space policy. Gen Hamel has been involved with GPS system development, acquisition and operations for decades.      

General Hamel was commissioned a second lieutenant through the U.S. Air Force Academy in June 1972. He holds a Bachelor’s degree in Aeronautical Engineering and Masters degree in Business Administration and has completed multiple senior military education programs. He is the recipient of several national space awards and is active in various professional associations.

Dr. Powell is a Technical Fellow at The Aerospace Corporation, where he focuses on current and future concepts for resilient Positioning, Navigation, and Timing (PNT). He has supported GPS acquisition programs for over 20 years for Space Systems Center (SSC) in Los Angeles for the office of the Undersecretary of the Air Force for Space Acquisition in Washington D.C.

Dr. Powell has developed orbit determination and estimation approaches and participated in launch and early orbit operations for multiple satellite programs. He led an Aerospace technical team to process signals from the Air Force Falcon Gold experiment, one of the first demonstrations of receiving GPS signals on a spacecraft above the GPS constellation.

As Chief Engineer of the Defense Advanced GPS Receiver (DAGR) program for the GPS Joint Program Office, Dr. Powell led a multi-organizational technical team that developed requirements, evaluated proposals, and conducted early field trials with Army and U.S. Marine Corps users.

In support of GPS and Global Navigation Satellite System (GNSS) Systems Engineering, Dr. Powell led the Aerospace team responsible for GPS constellation management, satellite reliability, Functional Availability, and Atomic Clock Modernization programs. In addition to advising multiple US Government agencies on domestic spectrum and regulatory matters, Dr. Powell participated as a technical advisor to the US delegation in multiple bilateral and multilateral International Telecommunications Union (ITU) sponsored spectrum coordination meetings with all current global and regional GNSS providers.

Prior to joining Aerospace, he worked at NASA Johnson Space Center on advanced space station and lunar base concepts, and in Space Shuttle mission operations.

Dr. Powell holds a BSc degree in Aeronautical and Astronautical engineering from Purdue University, an MSc in Aerospace Engineering from the University of Texas at Austin, and a Ph.D. in Aerospace Engineering from the University of California, Los Angeles.

Dr. Madani is the Executive Engineer at GridTology LLC, an international advising corporation and training institution in advanced power systems applications, grid modernization, and deployment of emerging technology in generation, transmission, and distribution.

Dr. Madani's experience spans across system planning, operation, protection and control engineering at Pacific Gas and Electric Co. (PG&E). For a decade, he served as the chair of the reliability committee of the western interconnected power system. He has also served as Industry Advisor to the National Science Foundation (NSF).

Dr. Madani's collaborations with the National Institute of Standards and Technology applied engineering metrology group in testing of synchrophasor systems has led to many national and international wide-area monitoring and control system deployment. He is a recipient of the lifetime achievement award from the North American Synchrophasor Initiative.

Dr. Madani is a Fellow of the Institute of Electrical and Electronics Engineers (IEEE) and IEEE Distinguished Lecturer, adjunct faculty in accredited U.S. and abroad universities, Board Certified practicing Electrical Engineer in California, and holder of U.S. and international patents.

Matt Higgins, PSM, is the past President of the International Global Navigation Satellite Systems (IGNSS) Association, a not-for-profit association based in Australia. He was also an Assistant Director Space Technology in the Australian Space Agency's Office of the CTO as the subject matter expert on Positioning, Navigation, and Timing.

From 2007 to 2010, Higgins was a Vice President of the International Federation of Surveyors (FIG) and its representative on the International Committee on GNSS, where he co-chaired Working Group D on Reference Frame, Timing and Applications. Matt is also an Honorary Fellow of the Geospatial Council of Australia.

In the 2023 King's Birthday Honours List, Matt was awarded the Public Service Medal within the Australian honours system for "outstanding public service to Queensland with international impact in the fields of surveying, geodesy and spatial sciences."

Higgins holds Bachelor and Master Degrees in Surveying.

Mr. Burgett is the Director of Global Navigation Satellite Systems for Garmin International. He has been a principal architect in the integration of GPS technology into Garmin's consumer and aviation products.

Burgett conducted early research into wearable GPS technology. He was instrumental in the creation of turn-by-turn automotive navigation systems combining GPS and dead reckoning technology. He also contributed to the development of TSO-C129a and N8110 certified aviation equipment.

Burgett's involvement in GPS dates to 1991, when he worked at Sandia National Laboratories on the integration of GPS with inertial navigation systems, precision guidance, and motion measurement for imaging radars.

Burgett holds a B.S. in Electrical Engineering from Kansas State University and a M.S. in Electrical Engineering from the University of New Mexico. He is a named inventor on 17 patents related to the integration of GPS technology with sensors and the use of GPS in portable navigation devices.

Bryan Chan is co-founder and VP of Business Development and Strategy at Xona Space Systems. He has over 12 years experience in the aerospace industry, spanning technical roles in government organizations to executive leadership positions at start-up companies. Prior to Xona Bryan worked at Maxar Technologies managing GEO communications satellite programs. He also served as the CEO of Night Crew Labs, conducting research on GPS radio occultation methods on aerial platforms for NASA and NOAA.

Mr. Chan previously held engineering roles at the NASA Jet Propulsion Laboratory, NASA Ames, and SpaceX. He received his B.S. in aerospace engineering at Georgia Institute of Technology, and his M.S. degree in aerospace engineering at Stanford University.

Dr. Frank van Diggelen is a Distinguished Engineer at Google, where he works on high accuracy GNSS for phones, watches, and cars. He also teaches GPS: he and Prof. Per Enge created an on-line GPS course, offered through Stanford University and Coursera and available on YouTube.

Van Diggelen is a pioneer in Assisted GNSS, the technique that allows GPS to work in cell phones. He is the inventor of coarse-time GNSS navigation, co-inventor of Long Term Orbits for A-GNSS, and holds over 100 issued US patents on GNSS. He is the author of "A-GPS" the first textbook on Assisted GNSS, and Co-editor of "PNT in the 21st Century" (Morton, van Diggelen, Spilker, and Parkinson), the latest book on GNSS and Navigation. He was the President of the Institute of Navigation 2021 through 2023. He has received the Thurlow and Kepler awards of the ION, and the Harold Spencer Jones Gold Medal from the RIN. He is a Fellow of the IEEE, ION, and the Royal Institute of Navigation.

Previously, he was a Navigation Officer in the South African Navy. He obtained his bachelor's degree from the University of the Witwatersrand, South Africa, and Ph.D. in electrical engineering from Cambridge University, England.

In his spare time, Van Diggelen is a competitive user of GNSS and other PNT technologies, as Navigator and Co-skipper of a racing sailboat.