电磁脉冲传感器的时域和频域标定方法及其等效性

Methodology of time-domain & frequency-domain calibration and equivalence for EMP sensor

主要研究电磁脉冲传感器的场标定问题,建立了由TEM小室、标准场强计及其他附属设备组成的电磁脉冲传感器标准场标定系统,阐述了幅频响应、时域脉冲响应、线性度、动态范围等参数的标定方法。传感器测量系统的传输函数可以通过时域类冲激响应和由频域幅值响应重建最小相位这两种方法得到,据此研究了时域标定和频域标定的等效性,以及通过反卷积去除仪器和标定小室影响的方法。阐述的内容可以应用于电磁脉冲传感器的严格标定、由测试失真波形恢复原始波形等方面。

In order to measure the waveform and amplitude of EMP accurately, the sensors need to be calibrated under the standard fields in the TEM or GTEM cell. A set of calibration system is discussed in this paper. A highly accurate method of calibrating such sensors is applicable to techniques in both the frequency domain and in the time domain. The complete frequency-domain transfer function or the time-domain impulse response function of sensor system can be obtained, thus allowing deconvolution processes to be used to remove perturbations from the measurement waveform by the instrumentation and TEM cell.