Current data are an important input data for electrical prospecting data postprocessing. The existing current recorder is inadequate for continuous recording, precision, bandwidth, dynamic range, and input range. A new full waveform current recorder that is ideal for measuring current signal for electrical prospecting applications is presented. The new measurement principle enables the fabrication of a high-precision current sensor with an autonomous data logger as well as continuous measurement capabilities for full waveforms that are comparable to recent developments for electrical prospecting applications. The full waveform current recorder is capable of measuring current with bandwidth from direct current (DC) to 10 kHz, with a power spectrum density noise floor of 10 µA/rt(Hz) at 10 Hz. The current recorder has a dynamic range that is higher than 97 dB over a range of 100 A at peak, with time synchronisation error as low as ±0.1 µs. These features make new current recorder a promising technology for high-precision measurement with long-duration, autonomous data logging for field electrical prospecting applications.

中文翻译：

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全波形电流记录仪，用于电气勘探

当前数据是用于电勘探数据后处理的重要输入数据。现有的电流记录器不足以进行连续记录，精度，带宽，动态范围和输入范围。提出了一种新的全波形电流记录仪，该记录仪非常适合用于电气勘探应用中测量电流信号。新的测量原理使得能够制造具有自主数据记录器的高精度电流传感器，并且能够对全波形进行连续测量，这可与电子勘探应用的最新发展相媲美。全波形电流记录仪能够测量带宽从直流（DC）到10 kHz的电流，功率谱密度本底噪声为10  µ10 Hz时的A / rt（Hz）。电流记录器的动态范围在峰值范围100 A时具有高于97 dB的动态范围，时间同步误差低至±0.1  µs。这些功能使新的电流记录仪成为一种有前途的技术，可用于具有现场电气勘探应用的长期，自主数据记录的高精度测量。