简要介绍了GPS双频精密单点定位数学模型及自主研制的精密单点定位软件。
The mathematic model of GPS dual-frequency precise point positioning and the corresponding program named "GPS-PPP" recently developed by the author were presented.
针对某卫星导航定位系统，着重研究了建立增强型接收机多模定位数学模型的方法，并讨论了定位解算的步骤。
The creation of the mathematical model for the Augmented Satellite Navigation Receiver is mainly researched and the steps of calculation are also discussed.
针对某卫星导航定位系统，着重研究了建立增强型接收机多模定位数学模型的方法，并讨论了定位解算的步骤。
The creation of the mathematical model for the Augmented Satellite Navigation Receiver is mainly researched and the steps of calculation are also discussed.
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