Figure
shows the system temperature as a function of the
radio frequency. The
can vary significantly over the large
bandwitdh of the 2SB NOEMA receivers. Figure
shows
the minimum and maximum system temperature inside the IF bandwidth for all
possible local oscillator tunings. As a result, for continuum estimation, a
frequency averaged
is interpolated from a pre-computed table. The
relevant frequency in that case is the LO frequency of the tuning (see
Fig.
). The averaging is done such as
| (19) |