利用三颗导航卫星进行二维定位的解算模型及其仿真解算

给出了用户接收机只收到三颗导航卫星信号时的二维定位解算模型及其解算方法，重点介绍了解算方法中接收机概略坐标的求法及利用得到的概略坐标求解接收机位置和钟差，并做了仿真解算。从卫星和接收机不同位置的很多次仿真解算结果表明，接收机位置和钟差能够极收收敛，通常迭代两次就能得到非常好的结果，完全适合工程应用。

The calculating model and its imitating practical calculation for two dimensions positioning by three navigation satellites

This paper describes the calculating model and its solution for two dimensions positioning when user receivers only receives the signal from three satellites for navigation It detailedly describes the calculating method of user receiver outline coordinate in solution and how to calculate user receiver position and its time system difference by calculated outline coordinate. It does imitating practical calculation. The result of a great mang times imitating practical calculation from different satellites and receiver positions show that receiver position and its time system difference are very rapid convergence. It can gain very good result that the iterative algorithm is usually done twice. The solution completely fit application in project.