甚宽频带地震计频域标定的相关处理技术——用正交相关法提高大噪声条件下正弦波标定的精度
Correlation Processing Techniques in Frequency-domain Calibration for Very Broadband Seismometer—Raising Sinewave Calibration Precision Under Strong Noise by Using Vertical Correlation Method
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摘要: 研究了正交相关法的数学原理,给出了仿真计算与测试应用的实例。结果表明,正交相关法具有很强的噪声抑制能力,克服了大噪声对标定精度的影响,大大提高了甚宽频带地震计的频域标定精度。Abstract: In this paper, a new correlation processing method-vertical correlation method is presented. A mathematics principle of vertical correlation method is studied and examples of simulation and application are given. The results show that vetical correlation method has strong noise-reduction ablity, eliminates strong-noise’s influences to calibration precision and raises greatly frequency-domain calibration precision for very broadband seismometer.
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