Generally, GNSS-based indoor navigation systems use repeaters or pseudolites. However, these methods are vulnerable to multipath errors and require additional information, including the repeater or pseudolite position. In this study, we propose a novel one-way indoor positioning system using GNSS signal transmitters. Our system uses paired transmitters, each of which broadcasts the same set of satellite signals. The autocorrelation functions of the combined signals are analyzed as the overlap of each individual autocorrelation function. The estimated position can be determined along the track between the transmitters. The multipath error is absorbed by the clock bias and does not cause position bias error. Furthermore, the proposed system can be applied in current commercial GNSS receivers directly. A theoretical analysis of the pseudorange, user position, multipath error, and signal power is included and supported by simulation results. A field test was conducted to confirm the feasibility of the proposed system.

中文翻译：

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使用配对发射器的常规 GNSS 接收器的单向深度室内定位系统

通常，基于 GNSS 的室内导航系统使用中继器或伪卫星。然而，这些方法容易受到多径错误的影响，需要额外的信息，包括中继器或伪卫星的位置。在这项研究中，我们提出了一种使用 GNSS 信号发射器的新型单向室内定位系统。我们的系统使用成对的发射器，每个发射器都广播同一组卫星信号。组合信号的自相关函数被分析为每个单独的自相关函数的重叠。可以沿着发射机之间的轨道确定估计位置。多径误差被时钟偏置吸收，不会引起位置偏置误差。此外，所提出的系统可以直接应用于当前的商用 GNSS 接收器。伪距的理论分析，仿真结果包括并支持用户位置、多径误差和信号功率。进行了现场测试以确认所提议系统的可行性。