隧道空间环境下高精度快速人员定位研究

Research on High Precision and Fast Personnel Localization in Tunnel Space Environment

隧道工作人员的人身安全逐渐得到相关部门的重视,设计一种隧道空间环境下高精度快速人员定位方法。根据接收信号强度测距技术的特性,引入高斯滤波算法去除低频率点,改进并优化指纹库降低测距误差,在此基础上结合到达时间定位技术的定位原理以及误差消除方法,实现距离测量与人员定位,并使用改进卡尔曼滤波误差抑制算法,提升隧道空间环境下人员定位的精度与速度。实验结果表明,所提方法通过改进接收信号强度测距技术与到达时间降低了距离测量误差,能够准确实现隧道空间环境下人员高精度快速定位。

The personal safety of tunnel workers is paid more and more attention by relevant departments.Therefore,the high precision and fast personnel positioning method under the tunnel space environment is studied.According to the characteristics of the received signal strength ranging technology,Gaussian filtering algorithm is introduced to remove the low frequency points,and the fingerprint database is improved and optimized to reduce the ranging error.Based on the positioning principle of the time of arrival positioning technology and the error elimination method,the distance measurement and personnel positioning are realized,and the improved Kalman filter error suppression algorithm is used to improve the accuracy and speed of personnel positioning in the tunnel space environment.According to the experimental analysis results,the improved received signal strength ranging technology and arrival time positioning technology have lower distance measurement error,and the fusion of the two technologies can quickly and accurately realize the high precision and fast positioning of personnel in the tunnel space environment.