98MAY19XE
Special analysis of the very short (59 meters) baseline
TIGOWTZL-WETTZELL.
Performance at S-band is unsatisfactory: group delays scatters within 100
nsec. Look at the plot of residuals
after estimation of clocks as the second degree polynomial. Performance at
X-band is good and phase delay ambiguities can be easily resolved.
- X-band group delay solution
for single baseline TIGOWTZL-WETTZELL; X-band group delays
without ionosphere correction. Very simple parameterization:
estimated parameters: coordinates of TIGOWTZL, clock for WETTZELL
modeled as a sum of linear function and linear spline with length
of segment 1 hour, atmosphere offset for WETTZELL.
- X-band phase delay solution
for single baseline TIGOWTZL-WETTZELL. X-band phase delays
without ionosphere correction. Very simple parameterization:
estimated parameters:
coordinates of TIGOWTZL, clock for WETTZELL modeled as a sum of
linear function and linear spline with length of segment 1 hour,
atmosphere offset for WETTZELL.
- Plot of differences: phase delay
for X-band minus group delay for X-band.
- Plot of postfit residuals for
X-band group delay solution.
- Plot of postfit residuals for
X-band phase delay solution.
- Plot of clock function for
WETTZELL derived from the group delay solution.
- Plot of clock function for
WETTZELL derived from the phase delay solution.
- Plot of residual phases for
baseline TIGOWTZL/WETTZELL
- Plot of contribution of phase
calibration signal to the group delay for the baseline
TIGOWTZL/WETTZELL.
Back to Leonid Petrov's discussion page.
Last update: 29-JUL-98 11:27:29
