What improvements will GPS III bring to high -precision surveying? When? Will these improvements require any changes in equipment and/or processes?
Tony Agresta, Nearmap
“The biggest impact of GPS III to high precision surveying will be a full constellation of L5 satellites. Triple frequency will bring faster convergence times and better accuracy in more difficult conditions. GPS III will better align with Galileo and BeiDou with L1C which means better availability in restricted sky conditions. Users will want to have equipment capable of supporting these new signals, in antenna and receiver HW as well as the signal processing done on board.”
Tony Agresta
Nearmap
Jean-Marie Sleewaegen
“Of all the improvements brought by GPS III, the new L1C signal will probably have the biggest impact on high-precision surveying. Compared to L1 C/A, L1C brings better reception in difficult environments, improved availability thanks to the “pilot” component, enhanced resilience to jamming attacks, and better interoperability with Galileo, BeiDou and QZSS. Many receivers do support L1C already, but the benefits will become more tangible as the GPS III constellation grows.”
Jean-Marie Sleewaegen
Septentrio
Members of the EAB
Tony Agresta
Nearmap
Miguel Amor
Hexagon Positioning Intelligence
Thibault Bonnevie
SBG Systems
Alison Brown
NAVSYS Corporation
Ismael Colomina
GeoNumerics
Clem Driscoll
C.J. Driscoll & Associates
John Fischer
Orolia
Ellen Hall
Spirent Federal Systems
Jules McNeff
Overlook Systems Technologies, Inc.
Terry Moore
University of Nottingham
Bradford W. Parkinson
Stanford Center for Position, Navigation and Time
Jean-Marie Sleewaegen
Septentrio
Michael Swiek
GPS Alliance
Julian Thomas
Racelogic Ltd.
Greg Turetzky
Consultant