With some well drilling engineering in Changqin Oilfield as the background, this paper introduces a pattern identification method for signal demodulation with mud pulse testing slope sensor.
以长庆油田某钻井工程为背景，介绍了泥浆随钻测斜仪信号解调的模式识别方法。
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It describes clearly the software of vector signal demodulation, including the frequency offset calculation, magnitude and group-delay compensate, and pulse shaping filter.
It was introduced that the hardware structure and working principle of ASIC Z87200 of direct-sequence digital-pulse modulation and demodulation, which was produced by ZLOG TELECOM.