Champ gravity field recovery based on variance component estimation 建筑物振动变形监测中的单历元算法研究
2.
Determining attitude with single epoch gps algorithm and its precision analysis 单历元定向和测姿算法及其精度分析
3.
Mean pole of the epoch 历元平极
4.
Enter the desired final epoch in the lower portion of the dialog , then click the calculate button to display the coordinates precessed to the final epoch 在下边的“最终坐标”对话框中输入你想得到的历元，并点击“计算”来显示坐标进动。
5.
Enter the desired final epoch in the lower portion of the dialog , then click the calculate button to display the coordinates precessed to the final epoch 在下面的窗口输入你想要的得到的标准历元，然后点击计算，这样就能够显示你想要得到的历元坐标。
6.
The result shows that not only to large cycle slip but also to small cycle slip , can be precisely detected in each frequency at single epoch 结果证明，不管对大周跳还是小周跳，该方法均能在单历元间准确地探测出各个频率上发生的周跳，较之双频组合观测值的探测方法具有更大的优越性。
7.
The comparison of different difference models for pseudo - range baseline is done . at last , we get some practical conclusions through computing some pseudo - range baselines in a gps network 摘要分析了对伪距单差、双差模式及同种模式不同解法，提出了加权平均单历元的伪距单差，通过解算实测的gps网，得出了一些具有参考价值的结论。
8.
3 investigation on new approaches of mitigating the ill - condition in gps rapid positioning using single frequency gps receivers the new approaches are investigated in gps rapid positioning using several - epoch single frequency phase data 单频gps快速定位中减弱病态性的新方法研究研究只利用几个历元的单频相位数据进行gps快速定位的新方法。
9.
After analyzing the existing ambiguity resolution methods the dissertation investigates the baseline rotation method based on the antenna - swap idea , and develops the fixed axis rotation maximum - minimum method ? farmm and the equivalent rotation maximum - minimum method ? ermm applicable for static basement and moving vehicle respectively . the former lowers the demands on rotation device while the latter improves the flexibility of antennae installation . meanwhile the dissertation also brings forward an ambiguity function search method which needs only one single epoch data with the outer aided information , and investigates the accuracy requirements for the assistant pointing information 其次,通过与gps等多星系统定向关键技术的对比分析,指出双星定向模糊度确定的难度;在分析现有模糊度求解方法的基础之上,研究了基于交换天线思想的转动基线模糊度确定方法,并提出了适合于静基座的定轴转动极大/极小值farmm法,以及适合于地面运动载体的等效转动极大/极小值ermm法,前者降低了对转动机构的要求,后者则提高了天线安装的灵活性;同时,提出了一种借助外部辅助信息的模糊度函数搜索法实现单历元双星定向,并分析了对外部辅助单轴姿态信息的精度要求。
10.
In this paper , we study that how to estimate the coordinate of currenly epoch using the observation preferably in the dynamic navigation . we study the mathematical models and methods for cleaning data in absolute positioning . and , we also studied the ionosphere model correction , the troposphere model correction and the rotation of the earth model correction . from studying , we improve the methods which smoothing pseudoranges in using phase 本文主要研究动态导航应用中，如何较好利用观测量来估计出当前历元的点位坐标，系统研究了绝对定位数据净化的模型和方法，研究了电离层模型改正、对流层模型改正及地球自转模型改正，改进了载波平滑伪距的方法。
