2023-06-27, 08:46 PM
(2021-01-21, 03:43 AM)seandepagnier Wrote: My point is, the ultrasonic anemometer discussed for $139 is clearly designed intended to be mounted vertical. It is not designed to take wind from an angle. So if the boat is heeling, the wind will flow through the sense area at an angle which creates much turbulence and it is doubtful that the readings will be accurate.
Have we determined if the heeling results in a significant accuracy issue? I was reminded of this thread while reading this marine wind LIDAR article that said they didn't experience significant impacts from the ship roll/pitch/yaw:
Quote:2.3.1 Ship's motion correction
...
We also corrected for the influence of the angular velocity of roll pitch and yaw, but it was found to be negligible. For PS96 (PS85) the correction due to angular velocity was less than 0.2 m s−1 99.7 % (99.9 %) of the time and never greater than 0.5 m s−1.
...
https://amt.copernicus.org/articles/11/5781/2018/