论文部分内容阅读
首先分析了检波器现有标定方法存在的问题,并且进行了实验研究。研究结果表明信号源输出功率未实时监测和检波器驻波比引起的反射是检波器灵敏度存在差异的主要原因。在此基础上提出了改进后的检波器标定方法,并且实验验证了改进后标定方法的正确性。分别采用Agilent信号源和Agilent矢量网络分析仪研究了HPM常用测量器件窄脉冲和连续波下的衰减量差异。研究结果表明:测量器件衰减环节窄脉冲下衰减量可采用矢网连续波测试结果,二者最大差别约0.3 d B。
Firstly, the problems existing in the existing calibration methods of geophones were analyzed and the experimental research was carried out. The results show that the signal source output power is not real-time monitoring and detector standing wave ratio reflection is the detector sensitivity differences exist. On the basis of this, the improved geophone calibration method is proposed, and the correctness of the improved calibration method is verified by experiments. The difference of attenuation between narrow pulse and continuous wave of HPM commonly used measuring devices was studied by using Agilent signal source and Agilent vector network analyzer respectively. The results show that the attenuation of the attenuation element can be measured by the continuous wave network. The maximum difference between them is about 0.3 dB.