Simplifications
Lesson: It is not
necessary to measure every frequency, in order to do phase calibration.
OVSA Procedure:
•Determine
reference phase calibration, say once per month (or whenever an active element is
changed)
•Determine
daily phase calibration on 6 frequencies, once every 2 hours, to determine slopes
and offsets.
•Lobe
ambiguities are eliminated (can tell whether 170o or –190o), so calibrations can be done less often.