GPS World, March 2016
MARCH 2016 COVER STORY 22 OPPORTUNITY FOR ACCURACY Exploiting terrestrial signals of opportunity SOPs can significantly reduce the vertical dilution of precision VDOP of a GNSS navigation solution Simulation and experimental results show that that adding cellular SOP observables is more effective in reducing VDOP than adding GNSS space vehicle SV observables BY Joshua J Morales Joe J Khalife and Zaher M Kassas SPECIAL SECTION 29 SIMULATOR BUYERS GUIDE MARCH 2016 WWW GPSWORLD COM GPS WORLD 3 VOL 27 NO 3 GPSWORLD COM FEATURE 50 INNOVATION CLARIFYING THE AMBIGUITIES Examining the Interoperability of Precise Point Positioning Products BY Garrett Seepersad and Sunil Bisnath Our authors look at the interoperability of PPP ambiguity resolution products distributed by several research organizations for improving position solutions MARKET WATCH APPLICATIONS TRENDS AND NEWS 33 MAPPING 36 SURVEY 38 TRANSPORTATION 40 UAV SECTOR UPDATES 43 MOBILE 46 DEFENSE 48 MACHINE CONTROL 4 ONLINE NOW 6 OUT IN FRONT World Dodges GPS Bullet BY Alan Cameron 10 EXPERT OPINIONS 11 TAKING POSITION What a Difference a Decade Makes BY Tracy Cozzens 12 SYSTEM OF SYSTEMS GPS IIF Aloft and Active Microseconds Go Missing in GPS Ground Control Glitch Harris All Digital GPS III Payload LightSquared Ligado BeiDou Rises to 18 Galileo Accelerated 16 PNT ROUNDUP Independence Redundancy At Sea Industry Effort Pushes Beyond LOS UAV Flight Indoor Nav at Vast Mobile World Congress 18 LAUNCHPAD New Survey Mapping OEM Transportation and UAV products 57 RESEARCH ONLINE AD INDEX 58 SEEN HEARD OPINIONS AND DEPARTMENTS
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