***ITRF 00*** U ALASKA COOP (UAAG), ALASKA Revised coordinate: November 16, 2007 _____________________________________________________________________________ | | | Antenna Reference Point(ARP): U ALASKA COOP CORS ARP | | ---------------------------------------------------- | | PID = DF7929 | | | | | | ITRF00 POSITION (EPOCH 1997.0) | | Computed in Nov. 2007 using 44 days of data. | | X = -2663934.320 m latitude = 61 11 27.85992 N | | Y = -1548947.592 m longitude = 149 49 26.73071 W | | Z = 5565691.862 m ellipsoid height = 66.299 m | | | | ITRF00 VELOCITY | | Estimated in Nov. 2007 using 362 days of data. | | VX = -0.0139 m/yr northward = -0.0107 m/yr | | VY = -0.0003 m/yr eastward = -0.0067 m/yr | | VZ = 0.0000 m/yr upward = 0.0059 m/yr | | | | | | NAD_83 (CORS96) POSITION (EPOCH 2003.0) | | Transformed from ITRF00 (epoch 1997.0) position in Nov. 2007. | | X = -2663933.619 m latitude = 61 11 27.85611 N | | Y = -1548948.643 m longitude = 149 49 26.64633 W | | Z = 5565691.476 m ellipsoid height = 65.922 m | | | | NAD_83 (CORS96) VELOCITY | | Transformed from ITRF00 velocity in Nov. 2007. | | VX = 0.0081 m/yr northward = 0.0110 m/yr | | VY = 0.0004 m/yr eastward = 0.0037 m/yr | | VZ = 0.0097 m/yr upward = 0.0050 m/yr | |_____________________________________________________________________________| | | | L1 Phase Center of the current GPS antenna: U ALASKA COOP CORS L1 PC C | | ---------------------------------------------------------------------- | | The Trimble Zephyr Geodetic with GP/Radome antenna | | (Antenna Code = TRM41249.00 TZGD) was installed on 08/23/07. | | The L2 phase center is 0.004 m below the L1 phase center. | | PID = DJ2708 | | | | | | ITRF00 POSITION (EPOCH 1997.0) | | Computed in Nov. 2007 using 44 days of data. | | X = -2663934.349 m latitude = 61 11 27.85993 N | | Y = -1548947.610 m longitude = 149 49 26.73068 W | | Z = 5565691.925 m ellipsoid height = 66.370 m | | | | The ITRF00 VELOCITY of the L1 PC is the same as that for the ARP. | | | | | | NAD_83 (CORS96) POSITION (EPOCH 2003.0) | | Transformed from ITRF00 (epoch 1997.0) position in Nov. 2007. | | X = -2663933.648 m latitude = 61 11 27.85612 N | | Y = -1548948.660 m longitude = 149 49 26.64629 W | | Z = 5565691.538 m ellipsoid height = 65.994 m | | | | The NAD_83 (CORS96) VELOCITY of the L1 PC is the same as that for the ARP. | |_____________________________________________________________________________| * Latitude, longitude and ellipsoid height are computed from their corresponding cartesian coordinates using dimensions for the GRS 80 ellipsoid: semi-major axis = 6,378,137.0 meters flattening = 1/298.257222101... * WARNING: Mixing of antenna types can lead to errors of up to 10 cm. in height unless antenna-phase-center variation is properly modeled. * The NAD_83 position & velocity were revised in Nov. 2007. ****************************************************************** ****************************************************************** Old coordinate ***ITRF 00*** U ALASKA COOP (UAAG), ALASKA Retrieved from NGS DataBase on 11/16/07 at 15:08:43. _____________________________________________________________________________ | | | Antenna Reference Point(ARP): U ALASKA COOP CORS ARP | | ---------------------------------------------------- | | PID = DF7929 | | | | | | ITRF00 POSITION (EPOCH 1997.0) | | Computed by OPUS in Apr 2003 using 10 days of data. | | X = -2663934.258 m latitude = 61 11 27.86242 N | | Y = -1548947.600 m longitude = 149 49 26.72817 W | | Z = 5565691.933 m ellipsoid height = 66.337 m | | | | ITRF00 VELOCITY | | Predicted with on-line HTDP Apr 2003. | | VX = -0.0220 m/yr northward = -0.0216 m/yr | | VY = -0.0007 m/yr eastward = -0.0105 m/yr | | VZ = -0.0097 m/yr upward = 0.0008 m/yr | | | | | | NAD_83 (CORS96) POSITION (EPOCH 2003.0) | | Computed by OPUS in Apr 2003 using 10 days of data. | | X = -2663933.605 m latitude = 61 11 27.85649 N | | Y = -1548948.653 m longitude = 149 49 26.64527 W | | Z = 5565691.488 m ellipsoid height = 65.930 m | | | | NAD_83 (CORS96) VELOCITY | | Predicted with on-line HTDP Apr 2003. | | VX = 0.0000 m/yr northward = 0.0000 m/yr | | VY = 0.0000 m/yr eastward = 0.0000 m/yr | | VZ = 0.0000 m/yr upward = 0.0000 m/yr | |_____________________________________________________________________________| | | | L1 Phase Center of the current GPS antenna: U ALASKA COOP CORS L1 PC C | | ---------------------------------------------------------------------- | | The Trimble Zephyr Geodetic with GP/Radome antenna | | (Antenna Code = TRM41249.00 TZGD) was installed on 08/23/07. | | The L2 phase center is 0.004 m below the L1 phase center. | | PID = DJ2708 | | | | | | ITRF00 POSITION (EPOCH 1997.0) | | Computed by OPUS in Apr 2003 using 10 days of data. | | X = -2663934.287 m latitude = 61 11 27.86243 N | | Y = -1548947.618 m longitude = 149 49 26.72813 W | | Z = 5565691.996 m ellipsoid height = 66.408 m | | | | The ITRF00 VELOCITY of the L1 PC is the same as that for the ARP. | | | | | | NAD_83 (CORS96) POSITION (EPOCH 2003.0) | | Computed by OPUS in Apr 2003 using 10 days of data. | | X = -2663933.634 m latitude = 61 11 27.85650 N | | Y = -1548948.671 m longitude = 149 49 26.64523 W | | Z = 5565691.551 m ellipsoid height = 66.001 m | | | | The NAD_83 (CORS96) VELOCITY of the L1 PC is the same as that for the ARP. | |_____________________________________________________________________________| * Latitude, longitude and ellipsoid height are computed from their corresponding cartesian coordinates using dimensions for the GRS 80 ellipsoid: semi-major axis = 6,378,137.0 meters flattening = 1/298.257222101... * WARNING: Mixing of antenna types can lead to errors of up to 10 cm. in height unless antenna-phase-center variation is properly modeled.