Conclusions wrt Future Space Mission

After three years neck deep in QUaD data some comments...
We showed that even on the ground gain stability (1/f) and relative gain cal. can be excellent:
I believe with careful design this can remain true for space mission
I believe rapid pol. modulation would do more harm than good

Calibration of polarization efficiency and angle was a weak point...
OK for us but will be a big challenge for next generation

Far sidelobes were a major cause of pain for us
Should be (completely?) avoidable in space mission

Beam shape effects were not a problem for us. However for the future:
Calcs of these effects should NOT ignore averaging down across array and scan pattern
With knowledge of (stable) beam shapes can correct for much of the contamination
I believe in the end this last will be necessary to reach r=0.01