| PS100型IP到端可控源高精度大地电测仪系统 ——CDMA技术首次在地电阻率测量中的应用 |
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| 引用本文： | 赵璧如,赵健,张洪魁,钱卫,赵玉林,钱复业.PS100型IP到端可控源高精度大地电测仪系统 ——CDMA技术首次在地电阻率测量中的应用[J].地球物理学进展,2006,21(2):675-682. |
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| 作者姓名： | 赵璧如 赵健 张洪魁 钱卫 赵玉林 钱复业 |
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| 作者单位： | (1.中国地震局地球物理研究所,北京 100081;〓2.北京市地震局,北京 100080; 3.多伦多大学, 加拿大；〓4.北京云梦达通讯设备有限公司, 北京100084） |
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| 基金项目： | 中国地震局地球物理所论著号：06AC1021 |
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| 摘 要： | CDMA技术首次应用到地电阻率测量，在强电磁干扰环境下实现微弱电信号的检测和高精度测量.设计并实现了直接用标准电阻标定地电仪的方法并可对仪器的抗干扰能力进行测定.仪器已在地震前兆监测、石油开发中得到实际使用，实现在野外恶劣的测量环境下（信噪比20 dB）取得0.1%的测量精度.
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| 关 键 词： | CDMA 伪随机序列 地电阻率 抗干扰与高精度 |
| 文章编号： | 1004-2903（2006）02-0675-08 |
| 收稿时间： | 2005-07-10 |
| 修稿时间： | 2005-08-20 |
The PS100 high precision earth-eletrictity instrument system (IP to IP) with controllable source——Application of CDMA technology to the measurement of earth-resistivity for the first time |
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| ZHAO Bi-ru,ZHAO Jian,ZHANG Hong-kui,QIAN Wei,ZHAO Yu-lin,Qian Fuye.The PS100 high precision earth-eletrictity instrument system (IP to IP) with controllable source——Application of CDMA technology to the measurement of earth-resistivity for the first time[J].Progress in Geophysics,2006,21(2):675-682. |
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| Authors: | ZHAO Bi-ru ZHAO Jian ZHANG Hong-kui QIAN Wei ZHAO Yu-lin Qian Fuye |
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| Institution: | 1. Instituteof Geophysics, CEA, Beijing 100081, China; 2. Beijing Bureau of Seismology. Beijing 102249,China;3. University of Toronto. Canada;4. Yunmengda of Beijing communication apparatus Co. , Ltd. Beijng 100084, China |
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| Abstract: | CDMA technology is first applied to the measurement of earth resistivity.It realizes measuring of the faint electric signal and precision measurement under the strong interfering of electromagnetic environment.Have designed and realized with the measuring resistance to calibrate the earth resistivity instrament directly and can determine the anti-interference ability of the instrument.The instrument has already been used actually in monitoring of earthquake precursors,oil development,has achiered the measurement precision of 0.1% under the enviroment of abominable measurement of field(SNR 20 dB). |
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| Keywords: | CDMA PRBS Earth resistivity Anti-interference and high precision |
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