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l5 GIAPTER FOUR BASlC GEODESY PRINCIPLES
ctlAPrtm FIVE GENERAL DOT APPLICATIONS
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accuracy agencies airbome antenna application of GPS baselines beneﬁts C/A-code carrier frequency carrier-phase Cartesian coordinate system CIGNET control datums control surveys coordinate system CORS cost deﬁned Department of Transportation determine DGPS differential differential GPS earth elevation ellipsoidal height engineering ephemeris error Federal Federal Highway Administration ﬁeld Figure Geodesy geodetic control Geodetic Reference System geoid geoidal Global Positioning System GLONASS GPS applications GPS methods GPS positioning GPS receiver GPS satellite GPS survey GPS techniques GPS technology GPS World high-precision Highway intemational ionospheric kinematic longitude meter-level meters modulated monitor National Academy National Geodetic Survey navigation systems NGRS operations orbit P-code phase photogrammetric Positioning Service precision problem Pseudorandom pseudorange real-time reference ellipsoid reference points reference stations relative positioning satellite signals scientiﬁc spatial speciﬁc surface surveyor tion topography tracking data Transportation Research Board U.S. Department vertical VLBI Washington