Dennis Akos, Ph.D
. is an associate professor with the Aerospace Engineering Sciences Department at the University of Colorado, Boulder. He is also a consulting associate professor with Stanford University and a visiting professor at Lule University of Technology in Sweden. Dr. Akos obtained a Ph.D. degree in electrical and computer engineering from Ohio University in the Avionics Engineering Center. Dr. Akos' research interests include global navigation satellite system receiver architectures, RF design, embedded systems, and software defined radios. Dr. Akos has received a number of awards for his research efforts, including The Institute of Navigation Thurlow Award (2009), the Samuel M. Burka Award from The Institute of Navigation (2005), Best paper at IEEE Position Location and Navigation Symposium (2002), RTCA William E. Jackson Award (1997), and the Ohio University Gustavus E. Smith Award (1996).
Penina 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.
John 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..
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.
Michael 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.
Alessandro P. Cerruti
is a senior signal processing engineer with The MITRE Corporation, where he is a member of the GPS systems engineering and GPS user equipment teams. His interests include inter- and intra-system GPS radio frequency compatibility, software-defined GPS radios, as well as space weather effects on GPS. He has a B.S., M.Eng., M.S., and Ph.D. all from the School of Electrical and Computer Engineering at Cornell University. At Cornell University, Alex worked closely with his advisor in teaching and developing courses in GPS measurements, processing, and software defined radios, and he pursued his graduate studies in space weather effects on GPS receivers.
Christopher 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.
Stephen 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.
Patrick Y. Hwang, Ph.D.,
is a principal systems engineer with the Advanced Technology Center of Rockwell Collins, Inc. in Cedar Rapids, Iowa. He has over 28 years experience in applied Kalman filtering and advanced navigation systems design and holds various system technology patents, mostly related to GPS. Recently, he has been involved with the development of high-accuracy global differential GPS processing for military GPS receivers, vision navigation for indoor and GPS-denied environments, highly-accurate time transfer systems for collaborative navigation systems and novel integrity-optimized RAIM algorithms for aircraft flight safety. Most of these applications have involved the use of the Kalman filter for systems performance analysis, if not for measurement processing as well. Dr. Hwang has numerous technical publications and co-authored the textbook Introduction to Random Signals and Applied Kalman Filtering, 3rd edition with Prof. R. Grover Brown of Iowa State University. He received his M.S. and Ph.D. degrees in electrical engineering from Iowa State University.
Mark Petovello, Ph.D.,
is an associate professor in the Position, Location and Navigation (PLAN) group in the Dept. of Geomatics Eng., University of Calgary. Since 1998, he has been involved in various navigation research areas including satellite-based navigation, inertial navigation, reliability analysis, dead-reckoning sensor integration, and software-based GNSS receivers. He has extensive experience in navigation algorithm development, implementation and refinement, and is co-creator of several navigation-related software packages. Dr. Petovello is a contributing editor for Inside GNSS magazine where he heads their GNSS Solutions column, and an associate editor of NAVIGATION, the journal of the Institute of Navigation. He is also registered as a professional engineer in the province of Alberta, Canada. Dr. Petovello has won several awards for his work, including early achievement awards from the U.S. Institute of Navigation and APEGGA, several best paper/presentation awards, and he has been recently named to Avenue Magazine’s 2010 list, "Top 40 Under 40."
Alan 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.
is a consultant specializing in radio frequency signal processing and waveform design for communications, navigation, radar, and emitter location. He has more than 32 years of military GPS systems engineering experience. As a senior member of the technical staff at Texas Instruments, he pioneered approaches for building high-performance, jamming-resistant digital receivers using large-scale application-specific integrated circuit (ASIC) technologies. He has developed gain and frequency plans, nonuniform analog/digital conversion techniques, fast acquisition architectures, baseband signal processing algorithms and adaptive array approaches. He is currently active in location based encryption and authentication, civil jammer location architecture, and RFID systems. He holds 32 U.S. patents.
James 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.
Frank van Diggelen, Ph.D.,
has been in the navigation field almost all of his life. He became a navigation officer in the South African Navy before going on to college. Since then he has worked on GPS, GLONASS and A-GPS for Navsys, Ashtech, Magellan and Global Locate. With the acquisition of Global Locate by Broadcom, he is now technical director for GPS Systems and chief navigation officer of Broadcom Corporation. When not working on GPS technical issues and design, he is navigator and tactician on a racing yacht in Santa Cruz, California. Dr. van Diggelen is the inventor of coarse-time GNSS navigation, a co-inventor of long-term orbits for assisted GPS, and holds over 40 U.S. patents on assisted GPS. He is the author of the first textbook on assisted GPS, A-GPS: Assisted GPS, SBAS and GNSS, published in 2009 by Artech House. He has taught numerous GPS classes for, among others, NavtechGPS, GIS World and the IEEE. Over the past decade more than 500 people have attended Dr. van Diggelen’s GPS classes. He has a Ph.D. in electrical engineering from Cambridge University, England. Dr. Van Diggelen is a member of NavtechGPS' advisory board.
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.
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.