午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

The static three point measurement method is presented, which can be applied in field calibration of the wind direction measurement system for automatic meteorological stations, aiming to solve the problem of incomplete coverage of wind direction indication calibration angles, namely data missing during wind direction calibration. The validity and reliability of the calibration method are demonstrated through the theoretical analysis and experimental comparison according to the coding principles and regular pattern of wind direction values of the Gray Code wind direction sensor. The problem of data missing during the field wind direction calibration can be well solved by using the method, and the calibration data are accurate and reliable.The method is applicable during practical field application.This method can be recommended for indoor verification of wind direction values currently.