This week, I tested the ETMX UIM P2P and Y2Y filters (described in alog 10912). The results are showing that filters are working as expected giving a single pendulum transfer function falling at 1/f^2 after the resonnance (f=0.45Hz for pitch, f=0.6Hz for yaw). Also the coupling between pitch and yaw is small (~5%) so unless this is too much, there's no need for diagonalization for UIM.
Attached pdf are showing P2P P2Y (first pdf) Y2Y Y2P (second pdf) transfer functions with/without the filter.
Left to do for next week :
ETMX : Long decoupling on UIM/PUM
ETMY
ITMX/ITMY
sorry for the 90degrees rotated pdfs ! couldn't find a way to rotate and save them.