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The Effect of Antenna Covers On GPS Baseline Solutions

Final UNAVCO Dome Design

Figure 10: Picture of UNAVCO dome mounted on a Trimble Dorne Margolin choke ring antenna

This dome was tested, and its effect on the baseline height component solutions is less than 4 mm. The results are plotted in figure 11. Elevation cutoff angles of 10, 15, and 20 degrees are plotted in the top, middle, and bottom panels respectively. L3 solutions are plotted with the red "+" symbols, L3 solutions with additional troposphere parameters estimated are plotted with the green "*" symbols. The final UNAVCO dome was mounted over one of the antennas for days 344 and 345 only. Days 343 and 346 do not have a dome on either antenna. The solutions plotted in this figure show that the final UNAVCO dome causes less than a 4 mm error in the height component for processing elevation angles ranging from 10 to 20 degrees.

Figure 11: Baseline height solutions for the final UNAVCO dome. The top panel has solutions plotted using a 10 degree elevation cutoff. The middle panel has solutions plotted using a 15 degree elevation cutoff. The bottom panel has solutions plotted using a 20 degree elevation cutoff. In all panels, the red "+" marks represent L3 height solutions. The green "*" marks represent the L3 height solutions with additional hourly troposphere parameters estimated. The final UNAVCO dome was placed on one of the antennas on days 344 and 345. Days 343 and 346 do not have a dome on either antenna.

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Last modified Thursday, 17-Nov-2005 03:58:00 UTC

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