The received signal strength (RSS) is widely used in range-based localization because of its practical advantages, such as low cost and low complexity. For accurate ranging based on the RSS in indoor environments, well-defined propagation models (PMs) that consider the distortion of the RSS due to abrupt obstructions are required. This article proposes an exponential PM for indoor hallways whose structures can be modeled as a slab waveguide. This waveguide-shaped structure has two main power loss mechanisms: wave penetration and scattering. These loss mechanisms are quantified as exponential coefficients according to the law of conservation of energy. The surface-scattering theory and the multimode waveguide concept are utilized for the quantification of scattering and penetration, respectively. The proposed model is verified through actual site measurements using the vector network analyzer (VNA)-based channel-sounding system at IEEE 802.11ax frequency bands. The estimated range obtained from the measured data indicates that the proposed model leads to the ranging estimation performance that could not be achieved with existing sounding-based indoor channel models.

中文翻译：

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粗糙面板波导室内走廊基于信号强度的精细分辨率测距方案


接收信号强度（RSS）因其低成本、低复杂度等实用优势而广泛应用于基于距离的定位。为了在室内环境中基于 RSS 进行精确测距，需要定义明确的传播模型 (PM)，该模型考虑由于突然障碍物而导致的 RSS 失真。本文提出了一种适用于室内走廊的指数 PM，其结构可以建模为平板波导。这种波导形结构有两种主要的功率损耗机制：波穿透和散射。根据能量守恒定律，这些损失机制被量化为指数系数。表面散射理论和多模波导概念分别用于散射和穿透的量化。所提出的模型通过使用基于矢量网络分析仪 (VNA) 的信道探测系统在 IEEE 802.11ax 频段进行的实际现场测量进行了验证。从测量数据获得的估计距离表明，所提出的模型带来了现有基于探测的室内信道模型无法实现的测距估计性能。