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相关概念视频

Field Application of Global Positioning System01:28

Field Application of Global Positioning System

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The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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使用现有的光纤网络进行城市传感.

Jingxiao Liu1, Haipeng Li2, Hae Young Noh3

  • 1Senseable City Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. jingxiao@mit.edu.

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概括

研究人员使用现有的光纤电缆作为地震传感器网络,以确定城市地震源. 这种新的方法在各个城市绘制了地震源电力 (SSP),揭示了城市活动和噪音的洞察力.

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科学领域:

  • 地质物理学 地质物理学
  • 城市地震学 城市地震学
  • 分布式声学传感传感器

背景情况:

  • 城市地震信号分析为城市环境和社会提供了洞察力.
  • 传统的地震网络在全市范围内的地震源检测方面扎,原因是高频人为源的超密集阵列的高成本.

研究的目的:

  • 利用现有的光纤网络作为分布式声学传感系统,以准确地定位城市地震源.
  • 估计城市地区地震源强度的时间变化.
  • 为了生成整个城市的地震源电力 (SSP) 的时空地图.

主要方法:

  • 将50公里的电信纤维重新用于超密集的地震阵列.
  • 使用分布式声学传感 (DAS) 技术来检测和定位地震源.
  • 产生地震源电源 (SSP) 的时空地图.

主要成果:

  • 精确地定位城市地震源,包括交通,建筑和学校活动.
  • 在加利福尼亚州圣何塞成功生成了空间时空地震源电源 (SSP) 地图.
  • 在SSP值和环境噪音,土地使用模式和人口统计数据之间显示出强烈的相关性.

结论:

  • 将光纤网络改用为DAS系统克服了城市传感传统地震学的局限性.
  • 这种方法可以准确地定位来自城市活动的远程地震源.
  • SSP映射与城市特征相关,为城市环境监测提供了一个新的工具.