一种基于光线追踪的单点定位方法,用于非视线环境
Shuo Hu1, Lixin Guo1, Zhongyu Liu1
1School of Physics, Xidian University, Xi'an 710071, China.
Sensors (Basel, Switzerland)
|January 8, 2025
概括
本研究引入了一种使用到达角和光线追踪的新单位定位方法,以提高复杂的非视线环境中的精度. 这种方法改变了非视线路径,显著提高了本地化性能.
科学领域:
- 信号处理 信号处理
- 电磁学和传播的传播
- 地缘空间信息系统 (Geospatial Information Systems) 是一个地理空间信息系统.
背景情况:
- 非视线 (NLOS) 定位受到多路径传播的挑战.
- 现有的方法往往侧重于错误缓解,而不是基本的传播问题.
- 在复杂环境中精确定位仍然是一个关键的研究领域.
研究的目的:
- 为复杂的多路径NLOS环境提出一种新的单站点本地化方法.
- 为了利用到达角度 (AOA) 估计和射线跟踪 (RT) 来增强定位.
- 为了提高在困难的传播条件下定位非合作目标的准确性.
主要方法:
- 使用射线追踪生成通用源 (GS),将NLOS路径转换为相当的视线路径 (LOS).
- 实施一种新的GSs权重机制.
- 使用代重量最小方程 (IRLS) 估计器与多路相似度位移矩阵 (MSDM) 相结合.
主要成果:
- 拟议的方法在复杂的多路径NLOS场景中显著提高了定位精度.
- 定位性能接近克拉梅尔-拉奥下界 (CRLB).
- 集成MSDM进一步提高了在高多路径波动的区域的准确性.
结论:
- 这种新的单站点本地化方法有效地应对复杂的多路径NLOS环境中的挑战.
- 与传统方法相比,这种方法显示出更高的性能,达到接近最佳的准确性.
- 这种技术在不利的传播条件下为准确的目标定位提供了有希望的解决方案.
关键词:
在AOAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA在IRLS中,IRLS是IRLS,IRLS是IRLS.在NLOS的NLOS.美国 美国 美国 美国 美国传播传播传播的传播一个站点的本地化定位
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