Research on the Conformity of Error Value of Wind Direction Sensor Measurement in Automatic Weather Station

In view of the current lack of research on the conformity determination of the measurement results of wind direction sensors in automatic weather stations. According to the working principle of the EL-2C automatic weather station wind direction sensor, a corresponding experimental scheme is designed, and a corresponding measurement model is established according to its experimental process. The uncertainty of its measurement results is evaluated using the GUM method. The expanded uncertainty
$U$
and
$U_{95}$
values of the corresponding error values for each measurement point are obtained in the range of
$(2.1^{\circ}\sim 2.6^{\circ})$
and
$(2.2^{\circ}\sim 2.6^{\circ})$
respectively, and the results meet the basic requirements for evaluating the error compliance of the measuring instrument. This method fills the gap in the current research on the conformity determination of wind direction sensor measurement results at automatic weather stations, improves the reliability of wind direction sensor measurement results at automatic weather stations, and provides technical support to ensure the accuracy of wind direction detection data.