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Instructors | GNSS | INS | Kalman

Axelrad-GS-WPenina Axelrad , Ph.D., is a professor in the Department of Aerospace Engineering Sciences at the University of Colorado at Boulder, where she teaches both undergraduate and graduate courses and conducts research primarily on GPS topics. Her research interests include time transfer, personal navigation, GPS-based orbit and attitude determination for spacecraft in LEO and HEO, multipath characterization and correction for spacecraft, aircraft, and ground reference stations, and remote sensing using GPS based bistatic radar and occultation measurements. From 1990 to 1992 she was with Stanford Telecommunications doing work in time transfer systems, kinematic GPS algorithms, and integrated GPS/INS. She is a fellow of the U.S. ION and the AIAA and the recipient of the 1996 Lawrence Sperry Award from the AIAA, the 2003 Tycho Brahe Award from the U.S. ION and the 2009 Johannes Kepler Award from the Satellite Division of the U.S. ION.
Betz-GS-WJohn Betz , Ph.D., is a fellow at The MITRE Corporation. He has contributed to the design of modernized signals including GPS' M-code and L1C, to aspects of receiver processing for modernized signals, and also to systems engineering for GNSS modernization. He was co-recipient of the ION’s Samuel M. Burka Award in 2001 and in 2004 received the U.S. State Department Superior Honor Award for work on the U.S./E.U. negotiations on GPS and Galileo. He was named a fellow of the ION in 2006 and a fellow of the IEEE in 2009, and also is chair of the United States Air Force Scientific Advisory Board. At ION GNSS 2013, Dr. Betz was awarded the Satellite Division's highest honor, the Johannes Kepler Award, for his contributions to the GNSS signal modernization and to the compatibility and interoperablity of gloval navigation satellite systems. Dr. Betz is NavtechGPS' advisor on receiver design..
Boynton4106-GS-WFranck Boynton is the vice president and chief technical officer at  NavtechGPS and heads its Product Division, which handles a wide variety of GPS-related hardware, books and software. He has 23 years experience in the test, operation and marketing of GPS receivers, antennas, boards, data link products and associated equipment. He is certified by several manufacturers for sales, operation and training on high accuracy receiver systems and OEM products. He specializes in custom system development, design and implementation of high performance GNSS components. Franck won a best paper"award at the ION GNSS 2003 meeting for GPS applications. He is a NavtechGPS technical board member and corporate officer.
Braasch-GS-WMichael S. Braasch,  Ph.D.,is a Thomas Professor of Electrical Engineering and has served as the director of the Avionics Engineering Center at Ohio University. His research includes GPS receiver design, GPS/INS integration, multipath mitigation, advanced cockpit displays and UAV operational safety analysis. Dr. Braasch has served as a technical advisor both to the FAA and the International Civil Aviation Organization (ICAO) in the area of precision approach and landing systems, and he has received international recognition for his work on characterizing the effects of multipath on GPS/GNSS accuracy. As co-founder of the company GPSoft, Dr. Braasch has been instrumental in the development the Satellite Navigation (SatNav) Toolbox, the Inertial Navigation System (INS) Toolbox, and the Navigation System Integration & Kalman Filter Toolbox for MATLAB. Dr. Braasch is a fellow of the Institute of Navigation, a senior member of the IEEE, is an instrument-rated commercial pilot and is a licensed professional engineer in the State of Ohio.
Hegarty-GS-WChristopher Hegarty, D.Sc.,   is a director with The MITRE Corporation, where he has worked mainly on aviation applications of GNSS since 1992. He is currently the chair of the Program Management Committee of RTCA, Inc., and co-chairs RTCA Special Committee 159 (GNSS). He served as editor of NAVIGATION: The Journal of the Institute of Navigation from 1997 – 2006 and as president of the Institute of Navigation in 2008. He was a recipient of the ION Early Achievement Award in 1998, the U.S. Department of State Superior Honor Award in 2005, the ION Kepler Award in 2005, and the Worcester Polytechnic Institute Hobart Newell Award in 2006. He is a fellow of the ION, a 2010 fellow of the IEEE, co-editor/co-author of the textbook Understanding GPS: Principles and Applications, 2nd edition and is NavtechGPS’ modernization technical advisor.
Heppe_020216_crop_GS_WStephen Heppe, D.Sc., operates Telenergy, Inc., an engineering consulting firm specializing in telecommunications, navigation, spectrum management and product integration. He received his BSEE/CS from Princeton University in 1977 and his master's and doctorate from The George Washington University in 1982 and 1989, respectively. Dr. Heppe has been working with GPS and GNSS since 1980. He led SC159/WG6 from 1993 through 1997 (first version of DO-235). Participating in RTCA, ICAO, and the ITU, he has also supported the development of standards for WAAS, SCAT-I and GBAS, as well as ADS-B and VHF Data Link Mode 4. Dr. Heppe was the communications lead on an early DGPS precision approach demonstration for the U.S. Navy. While working at Insitu, Inc., he developed a ship-borne moving-reference RTK system for recovery of the ScanEagle UAV. Dr. Heppe is a member of the IEEE, the RTCA and The Institute of Navigation.
Pue-GS-WAlan J. Pue, Ph.D., is the chief scientist of the Air and Missile Defense Department at The Johns Hopkins University Applied Physics Laboratory. Since 1974, he has worked on a wide variety of guidance, control, and navigation projects, including automated ground vehicle control research, space telescope pointing control, and missile guidance, navigation, and control. During this time he has specialized in the design and testing of integrated INS/GPS systems. Dr. Pue is also a graduate lecturer on linear systems theory and control system design methods for The Johns Hopkins University.
Sennott-GS-WJames Sennott, Ph.D.,  is the president of Tracking and Imaging Systems, Inc., a company specializing in advanced GPS software and hardware development for civilian and military markets. His expertise includes navigation/estimation theory, deep integration receiver architectures, GPS-IMU real time and desktop simulation methods, multiple access techniques, and spread-spectrum communications. He has been faculty fellow with the U.S. DoT Volpe Center and NASA Goddard, applying waveform estimation theory and advanced microprocessor families to GPS-user equipment and surveillance systems. Through this work, he developed architectures for single "chip" implementations of GPS. He is a pioneer in the area of integrated demodulation-navigation and ultra-tight coupling, holding fundamental patents in this and related GPS application areas. At Howard University, he researched multiple access spread spectrum and radio navigation systems. Earlier, he analyzed satellite and other techniques applied to navigation and air traffic control for the Transportation Systems Division of The MITRE Corporation. Dr. Sennott has been the recipient of the Rothburg Professional Excellence Award as an outstanding researcher at Bradley University, and he has served on the National Academy of Engineering Committee on the Future of GPS. He received his B.S. degree in electrical engineering from the University of Delaware and his M.S. and Ph.D. degrees from Carnegie Mellon University. 
Vaujin-GS-WMichael Vaujin, an aerospace, navigation and defense consultant of 25 years, works for an engineering firm in Tucson, Arizona. He has over 25 years experience in the field of aerospace, navigation and defense. He designs aided strapdown navigation solutions for land, sea, and airborne platforms using munition, tactical and navigation grade IMUs. He received his B.S.E.E. from the University of Florida in 1987 and his M.S.E.E. degree from the University of South Florida in 1991. During his 16 years at Honeywell Aerospace, he was awarded five patents in aided navigation and developed and taught an in-house technical course on inertial navigation error equations. In his three years at Tracking & Imaging Systems, Inc. in St. Petersburg, Florida, he developed all the navigation and Kalman filtering software needed to support a test range tracking application. At the 2010 Institute of Navigation GNSS conference, he was asked to present at a special panel celebrating the 50th anniversary of the invention of the Kalman filter.
Ward-GS-W Phillip W. Ward is president of Navward GPS Consulting, which he founded in 1991. Previously, he was a senior member of the technical staff at Texas Instruments (TI) in the Defense Systems & Electronics Group. He developed five generations of GPS receivers for TI, including the first commercially available GPS receiver, the TI-4100. Mr. Ward served as president of the ION from 1992 to 1993 and as chair of the ION Satellite Division from 1994 to 1996. In 2001, he became the ION's first congressional fellow. In 1989, he received the ION navigation award in memory of Colonel Thomas L. Thurlow for developing the first successful GPS receiver for geodetic surveying (the TI-4100), and he received the Johannes Kepler Award for lifetime achievement from the ION Satellite Division in 2008. GPS World included him in its "50 Leaders to Watch" for 2008/2009 and honored him with its "GPS Hero Award" in 2010 "for outstanding leadership, commitment and service to the global positioning system." Mr. Ward is a fellow member of the ION, a senior member of the Institute of Electrical and Electronics Engineers, and a registered professional engineer in Texas.He received his B.S.E.E. degree from the University of Texas at El Paso and his M.S.E.E. degree from Southern Methodist University.

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