高精度阶梯波电平校准方法研究  

Research on calibration method of high precision step wave level

作　　者：赵自文[1] 徐毓雄[1] 杜亮[1] 秦塬淋[1] ZHAO Ziwen;XU Yuxiong;DU Liang;QIN Yuanlin(China Airborne Missile Academy,Luoyang471000,China)

机构地区：[1]中国空空导弹研究院,河南洛阳471000

出　　处：《中国测试》2018年第12期80-84,共5页China Measurement & Test

摘　　要：现阶段空空导弹专用测试设备高精度阶梯波电平的现场校准仅能采用直接测量法,不能满足校准要求。为解决高精度阶梯波电平的校准需求,提出一种间接比较式校准方法,通过数字示波器放大阶梯波台阶,借助数字示波器的垂直直方图统计分析结果,与高精度直流电压源电压值进行比较得到阶梯波台阶电平测量结果,并对测量结果的不确定度进行分析评定。现场校准应用表明:该校准方法设计正确,简便易行,既能观察波形细节又能保证校准结果质量,在空空导弹型号产品的研制过程中起到良好的计量保证作用。At present,direct measurement method can only be adopted for high precision step wave level of airborne missile special test equipments,but it doesn’t meet the requirement of the calibration.In order to solve the requirement of the calibration,a indirect comparison method based step wave amplification of digital oscilloscope,vertical histogram statistical result and comparison to high-precision dc source voltage is proposed.The uncertainty of the measurement results is analyzed and evaluated.The application of in-situ calibration shows that this method is reasonable and convenient,it can not only observe the waveform details but also guarantee the quality of calibration results,and play metrological guarantee role in the process of airborne missile development.

关 键 词：阶梯波电平 间接比较式校准方法 直方图 分辨力 测量结果不确定度 

分 类 号：TB973[一般工业技术—计量学]