We consider the micro positioning platform which is equipped with only four receivers. This paper considers estimating the Direction Of Arrival (DOA) using four isotropic receivers. As a signal is reflected or scattered, its amplitude attenuates significantly. Thus, as we estimate the DOA, we use receivers with high signal amplitude, since they have more probability to receive a direct signal (not a reflected signal), compared to other receivers with low signal amplitude. Every receiver uses both the phase difference and the signal amplitude, in order to estimate the DOA. The efficiency of the proposed DOA estimation is verified by comparing it with the MUltiple SIgnal Classification (MUSIC) algorithm using computer simulations.

中文翻译：

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使用四个各向同性接收器的到达方向估计


我们考虑仅配备四个接收器的微型定位平台。本文考虑使用四个各向同性接收器来估计到达方向 (DOA)。当信号被反射或散射时，其幅度会显着衰减。因此，当我们估计 DOA 时，我们使用具有高信号幅度的接收器，因为与其他具有低信号幅度的接收器相比，它们更有可能接收直接信号（而不是反射信号）。每个接收器都使用相位差和信号幅度来估计 DOA。通过使用计算机模拟将其与多重信号分类（MUSIC）算法进行比较，验证了所提出的 DOA 估计的效率。