Global navigation satellite systems (GNSS) can provide high-accuracy positioning services in the open environment, while they have poor performance in shadowed regions. Pseudolite (PL) systems, with flexible deployment, can carry on the role of GNSS to provide high-accuracy positioning services in the case of GNSS failure. Ground-based precise point positioning (gPPP) for pseudolite systems allows a user to use a stand-alone receiver to achieve centimeter-level positioning, but without integer ambiguity resolution (IAR). The purpose of this work is to transfer the GNSS precise point positioning-real-time kinematic (PPP-RTK) technology to a ground-based pseudolite system, referred to as gPPP-RTK, for faster convergence and higher accuracy compared to gPPP by achieving IAR. However, the estimation of transmitter phase biases (TPBs) is the core for gPPP-RTK. Therefore, based on our independently developed pseudolite system, we propose a method to estimate the TPBs and analyze their characteristics. In this study, it is shown that the TPBs are rather stable in time unless the PL system is restarted. As a result, the TPBs do not need to be broadcast to users frequently. A real-world gPPP-RTK experiment demonstrated that the convergence time dramatically shortened the horizontal and vertical components by 42% and 59%, respectively, compared with gPPP. Furthermore, gPPP-RTK showed a better positioning accuracy of 1.86 and 4.06 cm in the horizontal and vertical components, respectively, compared with that of 2.00 and 10.00 cm for gPPP. The performances of convergence time and positioning accuracy in the vertical component are significantly better than that in the horizontal component.

全球导航卫星系统（GNSS）在开放环境下可以提供高精度定位服务，而在阴影区域性能较差。伪卫星（PL）系统部署灵活，可以在GNSS失效的情况下，继续发挥GNSS的作用，提供高精度定位服务。用于伪卫星系统的基于地面的精确点定位 (gPPP) 允许用户使用独立接收器实现厘米级定位，但没有整数模糊度分辨率 (IAR)。这项工作的目的是将 GNSS 精确点定位实时运动 (PPP-RTK) 技术转移到地面伪卫星系统，称为 gPPP-RTK，与 gPPP 相比，通过实现更快的收敛和更高的精度IAR。然而，发射机相位偏差 (TPB) 的估计是 gPPP-RTK 的核心。因此，基于我们自主开发的伪卫星系统，我们提出了一种估计TPBs并分析其特征的方法。在这项研究中，表明除非重新启动 PL 系统，否则 TPB 在时间上是相当稳定的。因此，TPB 不需要频繁地广播给用户。真实世界的 gPPP-RTK 实验表明，与 gPPP 相比，收敛时间分别显着缩短了水平和垂直分量 42% 和 59%。此外，与 gPPP 的 2.00 和 10.00 cm 相比，gPPP-RTK 在水平和垂直分量上显示出更好的定位精度，分别为 1.86 和 4.06 cm。