2024-01-19, 12:34 PM
(2022-04-10, 02:26 PM)abarrow Wrote: True wind angle has to be calculated, as on a moving vessel the speed of the vessel and the current the vessel is traveling in contribute to the wind speed and direction that is detected by your sensor.
If the sensor is stationary, apparent wind speed will be the same as true wind speed. Apparent wind will be the angle referenced to the forward position on the sensor (+/- 180 degrees). I assume that you will be pointing this reference to north. On my ultrasonic sensor, it's a little mark that I have to align with the centerline of the boat. There are ways in OpenPlotter to calculate true wind direction and speed, but they require a vessel heading and speed to create the numbers, which I'm assuming you don't have.
Hi, do you know the formula? I have NMEA2000 data that gives me AWA AWS have heading and speed, wich to calculate TWS TWA