本发明还提供了一种整周模糊度初始化方法。
The invention also provides a whole circumference ambiguity initializing method.
相位测量中，一个主要问题是整周模糊度的确定问题。
The ambiguity resolution is one of the primary problems in GPS carrier phase measurement.
整周模糊度搜索一直是GPS快速精确定位的关键问题。
Searching for integer cycle ambiguities has been a hot topic in precise GPS fast positioning.
第二，研究了GPS整周模糊度解算的LAMBDA算法。
Second, the GPS integer ambiguity is studied by LAMBDA algorithm.
首先用零空间约束法确定搜索空间，然后用CTS搜索整周模糊度的最优解。
First, a null-space restriction is used to define the searching space, and then, CTS is applied to search the optimal result of the integer ambiguity in the searching space.
基于LAMBDA算法和FASF算法，提出了一种新的整周模糊度快速求解算法。
A new algorithm for fast integer ambiguity resolution based on LAMBDA and FASF methods is proposed.
为了加速整周模糊度的搜索过程，解相关的方法得到了应用，并被证明是行之有效的。
In order to speed up the searching process for the integer values of ambiguity, the method of decorrelation is applied, which works "in practice" sufficiently well.
用LAMBDA方法确定GPS载波相位测量的整周模糊度，需要较高精度的浮点解。
When using the LAMBDA method to fix an integer ambiguity of GPS carrier phase measurements it is necessary to have a high accuracy of float solution.
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；
When realizing kinetic GPS differenced positioning using single frequency GPS receiver, the decision of integer ambiguity of phase observation is rather difficult.
通过对算例的分析，提出需要解决的问题：整周模糊度、实时钟差和天顶湿延迟的估计方法。
After the examples are analyzed, there are problems which need to be solved such as ambiguity, real-time clock bias error and the estimate method of zenith wet delay.
利用基线约束剔除不合理的整周模糊度组合，通过残差列表获取最优模糊度，并引入历史检测。
Unreasonable ambiguities are rejected according to base-line and the best ambiguity is achieved by error list and the historical test is introduced.
为缩短模糊度搜索时间，提高模糊度解算的正确率，本文引入LAMBDA法进行解算整周模糊度。
To shorten the time of the solution of integer ambiguity and improve its validity, the LAMBDA algorithm is introduced.
再以该近似解和协方差矩阵为初值，由无迹卡尔曼滤波(ukf)实时估计双差整周模糊度的精确解。
Then the float ambiguity resolution was passed into an unscented Kalman filter as initial state value. UKF estimated the precise ambiguity resolution in real time with the initial value.
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。
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.
利用马尔柯夫估计，推导了GPS整周模糊度估计矢量和导航定位参数估计矢量的表达式，以及相应的协方差矩阵；
The GPS integer ambiguity estimates, the navigation parameter estimates and their variance-covariance matrix are derived by using Markovian estimation.
由于该方法不需要确定模糊度的浮点解，且能大大减小整周模糊度的搜索范围，所以使得整周模糊度的解算时间大大减少。
The process does not need to identify the floating resolution of the ambiguity and the search space of ambiguity can be greatly reduced.
理论分析与仿真结果表明：与仅采用单频GPS测量信息相比，该方法不仅能有效地提高相对定位精度，而且还能大大减少整周模糊度判定所需的历元数。
The simulation result shows that this method can not only improve the positioning precision, but also reduce the epochs greatly needed by fixing the ambiguity.
理论分析与仿真结果表明：与仅采用单频GPS测量信息相比，该方法不仅能有效地提高相对定位精度，而且还能大大减少整周模糊度判定所需的历元数。
The simulation result shows that this method can not only improve the positioning precision, but also reduce the epochs greatly needed by fixing the ambiguity.
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