摘要
在GNSS测量工作中,临近的历元可能会出现连续的周跳情况,对定位的结果造成严重的影响。为提高定位结果的精度与可靠性,对周跳的探测修复一直是GNSS工作者需要解决的问题。GNSS观测过程中,原始观测值受观测环境的影响而易发生周跳现象,针对原始观测值,利用经典的相位/伪距组合法,结合粗差检验方法模型进行整体平差,处理载波相位观测值中存在的周跳,实现周跳值探测修复功能,为进行观测值周跳探测的预处理提供快速解决方法。通过设计仿真实验进行方法验证,处理结果显示:结合粗差检验法的周跳探测与修复在理论上正确可行,能够实现对模拟周跳的探测与修复,其中对观测值中2周以上的周跳具备较强的探测修复能力,且探测精度高,探测速度快,探测结果可靠,验证该方法的正确性、实用性和可靠性。
In GNSS measurement,continuous cycle hop may occur in adjacent ephemeris,which has a serious impact on positioning results.In order to improve the accuracy and reliability of positioning results,the detection and repair of cycle slip has always been a problem that GNSS workers need to solve.GNSS observations in the process,the original observed value is affected by environment and prone to cycle slip phenomenon,in view of the original observations,this paper use the classical phase/legal pseudorange group,combined with the test method of gross error model for overall adjustment,the processing cycle of carrier phase observation value,realize the value of cycle slip detection repair function,detection pretreatment for observation provides a quick solution.Methods validation,through simulation experiment,dealing with the results showed that combination of gross error test of cycle slip detecting and repairing is feasible in theory,can realize the simulation of cycle slip detecting and repairing,among them more than 2 weeks in the observed value of cycle slip have strong ability of detection and repair,and detection of high precision,fast detection,reliable detection results,verify the correctness,practicability and reliability of this method.
作者
赵祥伟
陈正宇
ZHAO Xiangwei;CHEN Zhengyu(China Energy Engineering Group Jiangsu Power Design Institute Co.,Ltd.,Nanjing 211102,China)
出处
《电力勘测设计》
2022年第7期48-52,共5页
Electric Power Survey & Design
关键词
GNSS
伪距/载波观测量
周跳探测
周跳修复
粗差检验
整体平差
GNSS
pseudo range/carrier observations
cycle slip detection
repair cycle slip
gross error test
overall adjustment
