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The geometrical delay is computed through:
|
(23) |
where
and
are the baseline and source
vectors respectively in a referential .
The resulting phase is:
Using sources with known position distributed in hour angle and
declination, a least square fit to the observed phases gives is used
to derive the antenna position errors.
An additional term can be fitted corresponding to the offset between
the azimuth and elevation axis of each antenna. It has a
dependance (in that case, data must be plotted as a function of
elevation also in addition to the hour angle and declination of the
"normal" baseline measurements).
Command RESIDUAL baseline will plot the residual phases
resulting from the last SOLVE BASELINE command.
Next: SOLVE HOLOGRAPHY
Up: Solving
Previous: SOLVE SKYDIP
Contents
Index
Gildas manager
2024-04-19