• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Mathematical Problems in Engineering >Two-Dimensional Far Field Source Locating Method with Nonprior Velocity
【24h】

Two-Dimensional Far Field Source Locating Method with Nonprior Velocity

机译：非先验速度的二维远场源定位方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Relative position of seismic source and sensors has great influence on locating accuracy, particularly in far field conditions, and the accuracy will decrease seriously due to limited calculation precision and prior velocity error. In order to improve the locating accuracy of far field sources by isometric placed sensors in a straight line, a new locating method with nonprior velocity is proposed. After exhaustive research, this paper states that the hyperbola which is used for locating will be very close to its asymptote when seismic source locates in far field of sensors; therefore, the locating problem with prior velocity is equivalent to solving linear equations and the problem with nonprior velocity is equivalent to a nonlinear optimization problem with respect to the unknown velocity. And then, this paper proposed a new locating method based on a one-variable objective function with respect to the unknown velocity. Numerical experiments show that the proposed method has faster convergence speed, higher accuracy, and better stability.
机译：地震源和传感器的相对位置对定位精度有很大的影响，特别是在远场条件下，由于有限的计算精度和先验的速度误差，精度会严重下降。为了提高等距放置传感器在直线上的远场源定位精度，提出了一种新的非先验速度定位方法。经过详尽的研究，本文指出，当地震源位于传感器远场时，用于定位的双曲线将非常接近其渐近线。因此，先验速度的定位问题等同于求解线性方程，非先验速度的问题等效于针对未知速度的非线性优化问题。然后，针对未知速度提出了一种基于单变量目标函数的新定位方法。数值实验表明，该方法收敛速度快，精度高，稳定性好。

著录项

  • 来源
    《Mathematical Problems in Engineering》 |2016年第4期|8540303.1-8540303.14|共14页
  • 作者

    Chen Qing; Liu Xiaowen; Li Juanjuan; Wang Manyi; Liu Peng;

  • 作者单位

    China Univ Min & Technol, IOT Percept Mine Res Ctr, Xuzhou 221008, Peoples R China|Xuzhou Inst Technol, Sch Math & Phys Sci, Xuzhou 221008, Peoples R China|China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou 221008, Peoples R China;

    China Univ Min & Technol, IOT Percept Mine Res Ctr, Xuzhou 221008, Peoples R China|China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou 221008, Peoples R China;

    China Univ Min & Technol, IOT Percept Mine Res Ctr, Xuzhou 221008, Peoples R China|China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou 221008, Peoples R China;

    Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing 221000, Jiangsu, Peoples R China;

    China Univ Min & Technol, IOT Percept Mine Res Ctr, Xuzhou 221008, Peoples R China|China Univ Min & Technol, Sch Informat & Elect Engn, Xuzhou 221008, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号