网络RTK参数全局化及其应用

Application of Parameter Globalization in Network RTK

针对网络RTK服务中各小区的相位模糊度、电离层延迟及对流层延迟等参数基准不一致的问题,提出了参数全局化的概念,并给出了数学模型;分析了单基线解算模式引起的网络不完整问题,提出了整体全局化和部分全局化的概念,并进一步给出了确定部分全局化子网的算法;将全局化方法应用于模糊度参数,可以实现模糊度的水平统一及确认;将该方法应用于电离层延迟、对流层延迟等误差参数,可以改善其质量。

The concept of parameter globalization is presented in this paper,which is based on the inconsistency of phase ambiguity,ionosphere delay and troposphere delay of each cell in network RTK service,and the mathematical model is also given.A problem of incomplete network caused by single baseline solution is discussed.Based on this problem,we propose a whole and partial globalization strategy,and the algorithm of determining partial global sub network is presented.Applying the method of global optimization to the ambiguity parameters,a common level can be achieved and ambiguity recognition can be realized.This method can also be used to the ionospheric delay,tropospheric delay and other error parameters,which can improve its quality.