The present submission is a direct application of the algorithm proposed by Wilczak et al.  to correct the wind components recorded by a sonic anemometer from tilt angles. It is compared to the double and triple rotation algorithm.
The present submission contains :
- 4 example files: one for the planar fit algorithm, one for the double rotation, one for the triple rotation and one for the estimation of the friction velocity with the different retrieval algorithms.
- The function tiltCorrection.m
- The function friction_velocity.m
- the file data.mat that includes simulated wind data
The algorithm used here for the Planar Fit is the one directly used in . This is the second version of the submission. There may still exist some bugs. Any comment, question or suggestion to improve the algorithm is warmly welcomed.
 Wilczak, J. M., Oncley, S. P., & Stage, S. A. (2001). Sonic anemometer tilt correction algorithms. Boundary-Layer Meteorology, 99(1), 127-150.
E. Cheynet (2020). Sonic anemometer tilt correction algorithm (https://www.mathworks.com/matlabcentral/fileexchange/63655-sonic-anemometer-tilt-correction-algorithm), MATLAB Central File Exchange. Retrieved .
Added project website
Updated Matlab release compatibility
Live script examples are now used
Added the file data.mat for the examples
Added an option to account for possible measurement bias (the coefficient 'b0'). The option is written as: tiltCorretion(...,"Err",1) (account for possible bias) or tiltCorretion(...,"Err",0) (ignore possible bias) - >Thank Astrid for the remark
typos + minor bug in rot2 and rot3
Additional and more detailed examples; the double and triple rotations are included; minor bug corrected.