| 瞬变电磁法仪器工作状态的几个问题 |
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| 引用本文： | 顾炳根. 瞬变电磁法仪器工作状态的几个问题[J]. 桂林工学院学报, 1992, 0(Z1) |
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| 作者姓名： | 顾炳根 |
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| 作者单位： | 桂林冶金地质学院勘查地球物理高技术研究所 |
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| 摘 要： | 瞬变电磁法野外工作对仪器的使用,应注意供电时间足够长,以免一次场两次激励的二次场相互混叠;发射电流的关断时间越短越好,可使接收信号的频谱响应信息越丰富;用大发射磁矩来增强接收信号时,接收信号的强度不得超出接收机的动态范围,否则早时道的信号将无效。
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| 关 键 词： | 电磁法勘探 电路分析 动态范围 脉冲宽度 |
SOME PROBLEMS ABOUT THE TEM INSTRUMENT IN APPLICATION |
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| Gu Binggen Geophysics High-tech Institute of Guilin College of Geology. SOME PROBLEMS ABOUT THE TEM INSTRUMENT IN APPLICATION[J]. Journal of Guilin University of Technology, 1992, 0(Z1) |
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| Authors: | Gu Binggen Geophysics High-tech Institute of Guilin College of Geology |
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| Affiliation: | Gu Binggen Geophysics High-tech Institute of Guilin College of Geology |
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| Abstract: | In the use of the TEM instrument in field work, the time of currentsupply keeps long enongh so that 2 times the second fields induced by thefirst field should not stack together, the turn-off time is shorter and betterso that the frequency spectrum in received information should be wider.When the large transmitting moment is used, which strengthens the receivedinformation, the level of received information must keep under the rangethat the receiver can measure, or the information in earlier channel isinefficient. |
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| Keywords: | electromagnetic prospecting circuit analysis dynamic range pulse width |
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