| 正弦标定波形组起始点的自动判别方法 |
| |
| 引用本文： | 邵玉平,韩进.正弦标定波形组起始点的自动判别方法[J].地震地磁观测与研究,2008,29(2):90-93. |
| |
| 作者姓名： | 邵玉平 韩进 |
| |
| 作者单位： | 中国成都,610041,四川省地震局水库地震研究所 |
| |
| 摘 要： | 地震观测系统标定的完整含义包括系统特性的测定和系统灵敏度的测定。系统灵敏度标定的最佳方法是振动台标定。由于地震台站不具备振动台标定的条件，因而目前普遍采用电动式力激励稳态正弦波标定的方法，即由一组正弦标定波形自动计算出幅频特性，并得到系统灵敏度。要实现计算程序的自动化，那么正弦标定波形组起始点的判断尤其重要。文章结合滑动短长平均法和AIC算法，提出了一种自动判别正弦标定波形组起始点的方法。
|
| 关 键 词： | 短长平均 AIC算法 正弦标定 |
| 文章编号： | 1003-3246(2008)02-0090-04 |
| 修稿时间： | 2007年11月30 |
The automatic judgment method of the starting point of sine calibration waves |
| |
| Shao Yuping,Han Jin.The automatic judgment method of the starting point of sine calibration waves[J].Seismological and Geomagnetic Observation and Research,2008,29(2):90-93. |
| |
| Authors: | Shao Yuping Han Jin |
| |
| Institution: | Shao Yuping and Han Jin (Reservoir Induced Earthquake Research Institute, Earthquake Administration of Sichuan Province, Chengdu 610041, China) |
| |
| Abstract: | The full meanings of calibration for seismological observation system consist of the deter- mination of system characteristic and system sensitivity. The best way of system sensitivity calibration can be obtained by vibration machine calibration. However, there are no necessary conditions for seismic station in using vibration machine calibration. So, a substitute method, that a force proportional to the current generated by inputting the sine wave calibration current directly in the force transducer coil, is widely used at present. Frequency response is automatically calculated by a group of sine calibration waves and system sensitivity is obtained. In the process, the judgment of the starting point of sine calibration waves is a key point. In combination of moving STA/LTA and AIC algorithm, an automatic judgment method is put forward. |
| |
| Keywords: | STA/LTA AIC algorithm sine calibration |
| 本文献已被 维普 万方数据 等数据库收录！ |
