Campbell CR200 - Page 133

Section 11. Programming Resource Library
123
11.5.2.2.2 Mean Wind Vector
R
esultant mean horizontal wind speed, :
Figure 46: Mean Wind Vector
where for polar sensors:
or, in the case of orthogonal sensors:
Resultant mean wind direction, u:
Standard deviation of wind direction,  (u), using Campbell Scientific
algorithm:
The algorithm for  (u) is developed by noting (FIGURE. Standard Deviation
of Direction (p. 124)) that