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iG4 Antenna Model
The iG4 antenna has been modeled by the NGS as:
‘
IGAIG4 NONE
‘
The calibration is available in the master antenna calibration list available from:
https://www.ngs.noaa.gov/ANTCAL/
The absolute calibration is reproduced below:
IGAIG4 NONE Igage IG4 MMI->North NGS 17/03/23
2.2 -0.3 80.8
0.0 1.0 1.6 1.9 1.9 1.7 1.4 1.1 0.9 0.9
0.9 1.1 1.2 1.4 1.6 1.8 2.1 0.0 0.0
1.5 5.7 103.3
0.0 -0.3 -0.6 -0.9 -1.1 -1.2 -1.3 -1.4 -1.3 -1.2
-1.2 -0.9 -0.7 -0.7 -1.2 -2.2 -3.7 0.0 0.
Calibration Values:
L1 0.0808 Meters
0.0808 meters
L2 0.1033 Meters
0.1033 meters
Radius (not to bumps) 0.1800 meters
SHMP
0.0400 meters
If you encounter an application that does not have the correct antenna model available, the
antenna model:
‘
IGAIG3S NONE
is nearly identical and may be substituted with minimal change in computed location.