节点文献
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
【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.
【关键词】 甚宽频带地震计;
频域标定;
正交相关法;
【Key words】 very broadband seismometer; frequency-domain calibration; vertical correlation method;
【Key words】 very broadband seismometer; frequency-domain calibration; vertical correlation method;
【基金】 中国地震局“九五”重点计划资助项目(95010102,95010110)。
- 【文献出处】 武汉大学学报(信息科学版) ,Editorial Board of Geomatics and Information Science of Wuhan University , 编辑部邮箱 ,2005年07期
- 【分类号】P315.62
- 【被引频次】6
- 【下载频次】105