Evaluation of Uncertainty in Measurement of Flatness of High Frequency Electromagnetic Mirror Plate
Aimed at the task of measuring and evaluating the flatness error of the mirror plate in the TEM chamber of a high frequency electromagnetic mirror,the problem of evaluating the uncertainty of the measurement of the flatness of the mirror plate is solved by selecting the measuring instrument and evaluating the measurement error.Different from the traditional eval-uation scheme for the uncertainty of the measurement of flatness error,the emphasis is on the evaluation of the uncertainty of the ultra-large specular plate in the TEM chamber of high-frequency electromagnetic mirror.It adopts the relative measurement method,chooses image level meter from the aspect of measurement convenience,and chooses the least square method for error evaluation.Based on MATLAB and Monte Carlo method,the flatness error evaluation is carried out,and the evaluation result is 4 μm.The flatness error evaluation problem of high frequency electromagnetic mirror plate is solved,the high fidelity of transmission of high frequency electromagnetic signal is guaranteed,and the accurate calibration of large TEM horn,D-dot and other electromagnetic sensors are realized.
TEM chamberflatness errorMATLABleast square methodimage level meter
万方数据
维普
