A navigation concept is being developed that relies on passive one-way ranging using pseudorange and beat carrier-phase measurements of high-frequency (HF) beacon signals that travel along non-line-of-sight paths via ionosphere refraction. This concept is being developed as an alternative to GNSS positioning services. If the set of signals that reaches a user receiver has sufficient geometric diversity, then the position of that receiver can be determined uniquely. Ionospheric modeling uncertainty causes errors in the deduced user position, but these errors are compensated by estimating corrections to a parametric model of the ionosphere as part of the navigation solution. A batch filter estimates the user position and corrections to an a priori ionosphere model. In simulated case studies involving significant errors in the a priori ionospheric parameters, the total positioning error is on the order of tens of meters in the horizontal plane and on the order of meters vertically.

中文翻译：

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使用高频信号进行导航和电离层表征：模型和解决方案概念

正在开发一种导航概念，该概念依赖于被动单向测距，使用伪距和拍频载波相位测量高频 (HF) 信标信号，这些信号通过电离层折射沿非视距路径传播。该概念正在开发中，作为 GNSS 定位服务的替代方案。如果到达用户接收器的信号集具有足够的几何分集，则可以唯一地确定该接收器的位置。电离层建模的不确定性会导致推导出的用户位置出现错误，但这些错误可以通过估计对电离层参数模型的修正作为导航解决方案的一部分来补偿。批处理过滤器估计用户位置和先验修正电离层模型。在涉及先验电离层参数显着误差的模拟案例研究中，总定位误差在水平面为数十米，在垂直面为数米。