 | Out in Front: Welling Up July 1, 2010
Article By: Alan Cameron One of the first industrial uses of GPS came in survey and seismic exploration for offshore oil, as evidenced by the cover story of this magazine’s September 1992 issue. A salient passage from that 18-year-old “Quality Control For Differential GPS in Offshore Oil and Gas Exploration” article:...More>> |
 | It's a Mad, Mad, Maddenless World February 10, 2010
Article By: Don Jewell Call it Madden withdrawal. It’s bad enough that I just endured Super Bowl “XLIV” without the smooth and engaging color commentary of the iconic John Madden, the legendary Hall of Fame, Super Bowl (XI) winning coach and virtual football entrepreneur. This year I patently missed John’s pithy...More>> |
 | Expert Advice: Cause Identified for Pseudorange Error from New GPS Satellite SVN-49 August 1, 2009
Article By: Richard B. Langley The GPS Wing and its contractors have traced the cause of pseudorange errors on L1 and L2 broadcast by the newest GPS satellite, SVN-49, to the manner in which the L5 signal demonstration payload was added to the satellite. Signal leakage between the two input ports of the antenna coupler network...More>> |
 | Indoor Message System Evaluated April 1, 2009
Article By: Borje Forssell The IMES indoor messaging system aims to provide seamless positioning at the room level.More>> |