GPS carrier phase integer ambiguity fast resolution is still the key issue and challenge for high accuracy survey and navigation, especially for single frequency receiver.
对于高精度测量和导航，GPS载波相位整周模糊度的快速求解仍然是一个难点，尤其对于单频接收机。
When realizing kinetic GPS differenced positioning using single frequency GPS receiver, the decision of integer ambiguity of phase observation is rather difficult.
利用单频GPS接收机进行实时动态差分时，相位观测值整周模糊度的实时确定比较困难；
Integer ambiguity resolution is the key problem of GPS based real-time attitude determination system which use double differencing carrier phase observables.
GPS姿态测量通常采用双差载波相位观测量，因此整周模糊值解算成为GPS实时姿态测量的关键问题。
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