Table 5:

Inputs used for flight predictions.

Case
Feedhorns PR SR Alignmenta

Nominal
LFI: as-builtb Photogrammetric Interferometric As-built
  HFI: as-builtc      
Best LFI: as-built Perfect Ellipsoid Interferometric Best
  HFI: as-built      

Worst
LFI: as-built Photogrammetric + Syntheticd Interferometric Worst ($1\sigma$)
  HFI: measurede      

Notes. (a) The selection of the alignment cases is described in Sect. 6.1.
(b) Based on an electromagnetic model of the as-built geometry, whose RF properties have been correlated against measurements, and which has been corrected for cool-down effects (Sandri et al. 2010).
(c) Based on an electromagnetic model of the as-built geometry (Maffei et al. 2010); cool down effects have a negligible impact.
(d) A set of small-scale spatial deformations was synthesized similar to those measured on the SR by interferometry.
(e) In some cases the feedhorn patterns were significantly different from the predicted ones; for these cases a hybrid pattern was developed which accounted for the measurements (Maffei et al. 2010).


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