一种分布式地下浅层交叉定位系统的研究

A distributed cross the shallow underground research Positioning System

摘要:

由于地下介质结构比较复杂,震源近场存在明显的频散现象,使得传统交叉定位方法在浅层小区域定位中存在定位误差大等问题,对此本文提出了一种基于地下全向传感特征的分布式地下交叉定位方法,该方法通过P波模型建立、地下全向交叉定位和最小二乘球心拟合,实现了地下震源的精确的定位。实验结果表明：在20*20m范围内,地下定位均方根误差小于0.5m。

Abstract:

Since the subsurface structure is more complex and there exist an obvious dispersion phenomenon in the near-field of source, the traditional method of cross-positioning exist positioning errors in the shallow position-ing small area, this paper presents a feature-based underground omni-directional sensor distributed underground cross positioning method by P-wave model, underground locating and omni-directional cross globe least squares fit to achieve the precise positioning of the underground source. The research mean that: the RMSE of errors came from underground locating less than 0.5m in the range of 20*20m.