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arXiv 2107.10071eess.SP
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两种高效易用的室内三维AOA定位NLOS缓解解决方案

Two Efficient and Easy-to-Use NLOS Mitigation Solutions to Indoor 3-D AOA-Based Localization

Wenxin Xiong, Joan Bordoy, Andrea Gabbrielli, Georg Fischer, Dominik Jan Schott, Fabian Hoeflinger, Johannes Wendeberg, Christian Schindelhauer, Stefan Johann Rupitsch

摘要:

针对视距(LOS)和非视距(NLOS)混合室内环境中的三维(3-D)到达角(AOA)源定位问题,提出了两种有效且易于使用的误差抑制解决方案。一个加权的线性最小二乘估计推导出的第一个LOS AOA组件的方向向量的到来,虽然在一个次优的方式。接着,利用残差平方和进行数据选择,以丢弃易出错的NLOS连接。在这样做时,第一种方法构成,可以获得更准确的封闭形式的位置估计。第二种方法应用模拟退火随机框架来实现鲁棒的$\ell_1$ -最小化准则,因此属于统计鲁棒化方法。计算机仿真和超声波现场实验进行了评估的两种方法的性能,展示了各自的情况下,他们出色的定位结果。

英文摘要:

This paper proposes two efficient and easy-to-use error mitigation solutions to the problem of three-dimensional (3-D) angle-of-arrival (AOA) source localization in the mixed line-of-sight (LOS) and non-line-of-sight (NLOS) indoor environments. A weighted linear least squares estimator is derived first for the LOS AOA components in terms of the direction vectors of arrival, albeit in a sub-optimal manner. Next, data selection exploiting the sum of squared residuals is carried out to discard the error-prone NLOS connections. In so doing, the first approach is constituted and more accurate closed-form location estimates can be obtained. The second method applies a simulated annealing stochastic framework to realize the robust $\ell_1$-minimization criterion, which therefore falls into the methodology of statistical robustification. Computer simulations and ultrasonic onsite experiments are conducted to evaluate the performance of the two proposed methods, demonstrating their outstanding positioning results in the respective scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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