Flo calls 1Hz "high frequency," but that's *not* high frequency for transient analysis.

My point being that a vaned yaw/beta sensor already has some built in "mechanical low pass filtering". It's, by its nature, intended to be a steady-state direction sensor. Then for sampling rate it's not clear if data is being integrated over that one second, and 1Hz is just the recorded sampling rate, or if it's truly an instantaneous sample. If integrated, that's another filtering effect. In the Coggan paper the wind direction sensor was on a control tower somewhere, apparently?

My point here is I'm just wondering if Zipp knows more about this transient, more chaotic "wind buffeting" right at the surface layer. Suggested by Hambini. Rather than this smoothed vane-calculated vector, possibly integrated over a time period of at least a second.

We're jumping all over Hambini for not telling us much about his data collection apparatus and methods. But we're also, as far as I can tell, not eating our own dog food. No one has really specific apparatus or methods with sufficient detail to attempt complete replication of results. Except maybe Flo.