A new global navigation concept is studied that relies on carrier Doppler shift measurements from a large LEO constellation. This system could provide an alternative to pseudorange-based GNSS. The concept uses a high-fidelity model of received carrier Doppler shift. This model is used in a point-solution batch filter that simultaneously estimates eight unknowns: the three position vector components, receiver clock offset, three velocity vector components, and receiver clock offset rate. The filter uses eight or more measured Doppler shifts in its least-squares fit. A generalized Geometric Dilution of Precision (GDOP) analysis indicates that absolute position accuracies on the order of 1-5 meters and absolute velocity accuracies on the order of 0.01 m/sec to 0.05 m/sec may be achievable if the range-rate precision of the Doppler shift measurements is 0.01 m/sec. These accuracies are comparable to current pseudorange-based GNSS. Clock offset accuracy is on the order of 0.0001 to 0.0010 sec 1-.

中文翻译：

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使用来自 LEO 星座的载波多普勒频移进行导航：类固醇上的 TRANSIT

研究了一种新的全球导航概念，该概念依赖于来自大型 LEO 星座的载波多普勒频移测量。该系统可以替代基于伪距的 GNSS。该概念使用接收载波多普勒频移的高保真模型。该模型用于同时估计八个未知数的点解批处理滤波器：三个位置矢量分量、接收器时钟偏移、三个速度矢量分量和接收器时钟偏移率。滤波器在其最小二乘拟合中使用八个或更多测量的多普勒频移。广义几何精度稀释 (GDOP) 分析表明绝对位置精度约为 1-5 米，绝对速度精度约为 0.01 m/sec 至 0。如果多普勒频移测量的距离速率精度为 0.01 m/sec，则可以达到 05 m/sec。这些精度可与当前基于伪距的 GNSS 相媲美。时钟偏移精度约为 0.0001 至 0.0010 秒 1-.