1
Geoffrey R Kirk, Michael Timo Allison, Ian Viney, Paul N Skoog: Automatic transference between real-time operation and post-processing in a GPS survey system. Trimble Navigation, Thomas E Law Offices of Thomas E Schatzel A Prof Corporation Schatzel, November 24, 1998: US05841026 (29 worldwide citation)

A centimeter level survey system includes reference base station and rover GPS units connected by a radio data link. Each includes recorders for the storage of raw measurement information including range, phase, cycle counts and time information. The rover unit is typically moved to points of intere ...


2
Mark Nichols, Kenneth W McBride, Ian Viney, Arthur Taylor, Richard Jackson, John F Schipper: Survey coordinate transformation optimization. Trimble Navigation, John F Schipper, November 16, 1999: US05986604 (29 worldwide citation)

A system for selecting an optimal transformation T(G2;G1) between a first ellipsoid E1 (e.g., WGS 84) in a first global coordinate system G1, relative to which the survey measurements are made, and a second ellipsoid E2 (e.g., NAD 27) in a second global coordinate system G2. Location coordinates (x' ...


3
Mark Nichols, Kenneth W McBride, Ian Viney, Arthur Taylor, Richard Jackson, John F Schipper: Optimization of survey coordinate transformations. Trimble Navigation, John Schipper, March 25, 1997: US05614913 (19 worldwide citation)

A system for selecting an optimal transformation T(G2;G1) between a first ellipsoid E1 (e.g., WGS 84) in a first global coordinate system G1, relative to which the survey measurements are made, and a second ellipsoid E2 in a second global coordinate system G2. A set of location coordinates (x'.sub.m ...