GPS World, September 2013
EXPERT ADVICE to GPS III followed by post processed analysis and mitigation of systemic errors will contribute significantly to achieving the goal of a more accurate ITRF These applications will also be augmented by an ongoing and significant international investment in the global geodetic infrastructure of the GGOS observing networks and analysis systems Laser ranging of GPS III will also encourage further international investments and industry innovations as higher precisions are further introduced to the world community Acknowledgments The authors thank these individuals for their contributions in developing a way forward for the implementation of LRAs on GPS III clearly showing the high level of interagency interest and coordination required to make this initiative happen overly nearly a decade of work We are especially grateful to the U S Department of Defense and in particular to U S Air Force Space Commander General Shelton for leadership and support in enabling NASA and our partners to realize this important contribution to GPS in years to come Honorable Charles Bolden Honorable Lori Garver Gen William Shelton Gen Robert Kehler Letitia Long Maj Gen Martin Whelan Chris Scolese Badri Younes Michael Freilich Jack Kaye Barbara Adde Norm Weinberg Craig Dobson Mike Moreau David Carter Stephen Merkowitz Yoaz Bar Sever Scott Pace Ray Yelle Scott Wetzel Major Janelle Koch Col Ret David Buckman Col Ret Allan Ballenger Col Ret David Madden Col Ret Bernard Gruber Col James Puhek Steve Malys Thomas Johnson Ron Beard Linda Thomas Mark Davis Larry Hothem Ken Hudnut Hank Skalski James Slater Vaughn Standley Mike Pearlman Erricos Pavlis Kirk Lewis Maj Gen Ret Robert Rosenberg and the National Space Based PNT Advisory Board cochaired by Honorable James Schlesinger and Col Ret Bradford Parkinson JAMES J MILLER is deputy director of the Policy Strategic Communications Division with the Space Communications and Navigation SCaN Program at NASA He is a commercial pilot with masters degrees in public administration from Southern Illinois University and international policy and practice from George Washington University JOHN LABRECQUE is lead of the Earth Surface and Interior Focus Area within NASAs Science Mission Directorate managing NASAs Global Geodetic Network that provides PNT products in support of NASAs Earth Observation program He received his doctorate in marine geophysics from Columbia University A J ORIA works for Overlook Systems Technologies Inc supporting NASA headquarters in the area of GPS and PNT technology He has a Ph D in astronautics and space engineering from Cranfield University UK www gpsworld com September 2013 GPS World 17
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