接收机钟跳对VRS改正数生成的影响分析

Analyzing the Effect of the Receiver Clock Jumps on VRS Corrections

VRS技术是网络RTK系统中应用最广泛的一种技术方法,它依赖于对基准站间空间相关误差的构建。基准站的接收机由于钟差的调整会产生钟跳,钟跳不仅会对观测值产生影响,还会造成VRS改正数的不连续。从VRS改正数生成的数学模型出发,分析了不同钟跳对观测值和改正数的影响,给出了针对钟跳的观测值和改正数的修复方法。以两个CORS网中的观测数据为例进行了实验验证,证明了算法的正确性和可靠性。

VRS technology is the most widely used technical method of network RTK systems, which relies on the construction of space-related error between the base stations. Reference station receiver clock jumps due to the adjustment of clock error. Clock jumps will not only have an impact on ob- servations, but also cause the discontinuous VRS corrections. From the mathematical model genera- ted by VRS corrections, this paper analyzes the different influence on the observations and correc- tions of clock jump. It also gives the method of fixing the observations and Corrections. The method is proved to be correct and effective.