***ITRF 00***
                INT AIRPORT COOP (ANC1),  ALASKA

 Effective date of new coordinate April 30, 2007
 Revised April 8, 2008
 _____________________________________________________________________________ 
|                                                                             |
|         Antenna Reference Point(ARP): INT AIRPORT COOP CORS ARP             |
|         -------------------------------------------------------             |
|                             PID = DE6227                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed in Apr. 2008 using 22 days of data.                                |
|     X =  -2669317.063 m     latitude    =  61 10 56.57058 N                 |
|     Y =  -1541331.599 m     longitude   = 149 59 48.37044 W                 |
|     Z =   5565207.744 m     ellipsoid height =   46.515   m                 |
|                                                                             |
| ITRF00 VELOCITY                                                             |
| Estimated in Apr. 2008 using 413 days of data.                              |
|     VX =  -0.0140 m/yr      northward =  -0.0109 m/yr                       |
|     VY =   0.0053 m/yr      eastward  =  -0.0116 m/yr                       |
|     VZ =  -0.0053 m/yr      upward    =  -0.0001 m/yr                       |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2003.0)                                     |
| Transformed from ITRF00 (epoch 1997.0) position in Apr. 2008.               |
|     X =  -2669316.362 m     latitude    =  61 10 56.56684 N                 |
|     Y =  -1541332.616 m     longitude   = 149 59 48.28806 W                 |
|     Z =   5565207.324 m     ellipsoid height =   46.100   m                 |
|                                                                             |
| NAD_83 (CORS96) VELOCITY                                                    |
| Transformed from ITRF00 velocity in Apr. 2008.                              |
|     VX =   0.0080 m/yr      northward =   0.0108 m/yr                       |
|     VY =   0.0060 m/yr      eastward  =  -0.0012 m/yr                       |
|     VZ =   0.0044 m/yr      upward    =  -0.0009 m/yr                       |
|_____________________________________________________________________________|
|                                                                             |
| L1 Phase Center of the current GPS antenna: INT AIRPORT COOP CORS L1 PC C   |
| -------------------------------------------------------------------------   |
| The L1/L2 choke ring, using DM T style antenna                              |
| (Antenna Code = LEIAT504GG      LEIS) was installed on 04/30/07.            |
|        The L2 phase center is 0.020 m above the L1 phase center.            |
|                             PID = DK2743                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed in Apr. 2008 using 22 days of data.                                |
|     X =  -2669317.104 m     latitude    =  61 10 56.57063 N                 |
|     Y =  -1541331.626 m     longitude   = 149 59 48.37026 W                 |
|     Z =   5565207.836 m     ellipsoid height =   46.619   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 Apr. 2008.               |
|     X =  -2669316.403 m     latitude    =  61 10 56.56689 N                 |
|     Y =  -1541332.642 m     longitude   = 149 59 48.28787 W                 |
|     Z =   5565207.416 m     ellipsoid height =   46.204   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 ITRF00 & NAD_83 positions & velocities were revised in Apr. 2008.

**************************************************
old coordinate
**************************************************

                              ***ITRF 00***
                INT AIRPORT COOP (ANC1),  ALASKA

 Retrieved from NGS DataBase on 04/08/08 at 17:31:55.
 _____________________________________________________________________________ 
|                                                                             |
|         Antenna Reference Point(ARP): INT AIRPORT COOP CORS ARP             |
|         -------------------------------------------------------             |
|                             PID = DE6227                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed by OPUS in Apr 2003 using 10 days of data.                         |
|     X =  -2669317.020 m     latitude    =  61 10 56.57347 N                 |
|     Y =  -1541331.542 m     longitude   = 149 59 48.37230 W                 |
|     Z =   5565207.810 m     ellipsoid height =   46.542   m                 |
|                                                                             |
| ITRF00 VELOCITY                                                             |
| Predicted with on-line HTDP Apr 2003.                                       |
|     VX =  -0.0220 m/yr      northward =  -0.0217 m/yr                       |
|     VY =  -0.0007 m/yr      eastward  =  -0.0104 m/yr                       |
|     VZ =  -0.0097 m/yr      upward    =   0.0009 m/yr                       |
|                                                                             |
|                                                                             |
| NAD_83 (CORS96) POSITION (EPOCH 2003.0)                                     |
| Computed by OPUS in Apr 2003 using 10 days of data.                         |
|     X =  -2669316.368 m     latitude    =  61 10 56.56762 N                 |
|     Y =  -1541332.594 m     longitude   = 149 59 48.28952 W                 |
|     Z =   5565207.364 m     ellipsoid height =   46.132   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: INT AIRPORT COOP CORS L1 PC C   |
| -------------------------------------------------------------------------   |
| The L1/L2 choke ring, using DM T style antenna                              |
| (Antenna Code = LEIAT504GG      LEIS) was installed on 04/30/07.            |
|        The L2 phase center is 0.020 m above the L1 phase center.            |
|                             PID = DK2743                                    |
|                                                                             |
|                                                                             |
| ITRF00 POSITION (EPOCH 1997.0)                                              |
| Computed by OPUS in Apr 2003 using 10 days of data.                         |
|     X =  -2669317.061 m     latitude    =  61 10 56.57352 N                 |
|     Y =  -1541331.569 m     longitude   = 149 59 48.37211 W                 |
|     Z =   5565207.902 m     ellipsoid height =   46.646   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 =  -2669316.409 m     latitude    =  61 10 56.56767 N                 |
|     Y =  -1541332.621 m     longitude   = 149 59 48.28934 W                 |
|     Z =   5565207.456 m     ellipsoid height =   46.237   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.