| SS-Y型伸缩仪观测问题分析及优化方法探讨 |
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| 引用本文： | 杨江,李静渊,余剑锋,李农发.SS-Y型伸缩仪观测问题分析及优化方法探讨[J].地震地磁观测与研究,2019,41(1):91-98. |
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| 作者姓名： | 杨江 李静渊 余剑锋 李农发 |
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| 作者单位： | 1.中国武汉 430071 中国地震局地震研究所中国地震局地震大地测量重点实验室;2.中国湖北 430071 武汉地震科学仪器研究院有限公司;3.中国武汉 430071 湖北省重大工程地震监测与预警处置工程技术研究中心 |
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| 基金项目： | 中国地震局地壳应力研究所基本科研业务费专项“中国大陆综合地球物理场观测仪器研发”（项目编号：Y201804）；湖北省技术创新专项重大项目（项目编号：2019AAA053） |
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| 摘 要： | SS-Y型伸缩仪在我国地震洞体形变监测台网中已安装使用多年。对地球固体潮观测而言，仪器观测资料精度高且长期稳定性较好，但从地震预测的观测需求来看，SS-Y型伸缩仪仍然存在很多不足，如高频信息缺失、抗干扰能力较弱、存在格值误差、自校验能力较差等。对伸缩仪存在的问题进行分析，并提出一种超宽频带短基线伸缩仪的设计思路，以期为后续新仪器的研制提供理论依据。
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| 关 键 词： | 伸缩仪 高频信息 抗干扰能力 格值误差 自校验能力 超宽频带 |
Analysis of observation problems and discussion of optimum method for SS-Y extensometer |
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| YANG Jiang,LI Jingyuan,YU Jianfeng,LI Nongfa.Analysis of observation problems and discussion of optimum method for SS-Y extensometer[J].Seismological and Geomagnetic Observation and Research,2019,41(1):91-98. |
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| Authors: | YANG Jiang LI Jingyuan YU Jianfeng LI Nongfa |
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| Institution: | 1.Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;2.Wuhan Institute of Seismologic Instrument Co., LTD, Hubei Province 430071, China;3.Engineering Technology Research Center for Earthquake Monitoring and Early Warning Disposal of Major Projects in Hubei Province, Wuhan 430071, China |
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| Abstract: | SS-Y extensometer has been installed and used for many years in China seismic precursor monitoring network. For earth tide observation, the instrument has high accuracy and good longterm stability. However, according to the observation demand of earthquake prediction, SS-Y extensometer still has many problems, such as lack of high frequency information, weak antiinterference ability, existence of lattice error, poor self-calibration ability and so on. This paper will analyses these problems of extensometer, and propose a design idea of ultra-wideband and short baseline extensometer, which provides theoretical support for the subsequent development of new instruments. |
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| Keywords: | extensometer high frequency information anti-interference ability lattice error self-calibration ability ultra-wideband |
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