基于改进的电离层延迟的BDS周跳探测方法  

Detection method of BDS cycle slips based on improved ionospheric delay

作　　者：陈雄川 王潜心[1] 姚一飞[1] 张铭彬 胡超[1] 毛亚[1] CHEN Xiongchuan;WANG Qianxin;YAO Yifei;ZHANG Mingbin;HU Chao;MAO Ya(School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《合肥工业大学学报（自然科学版）》2018年第2期255-259,283,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(41404033;51374209);国家重点实验室开放基金重点资助项目(SKLGIE2014-Z-1-1);高等学校博士学科点专项科研基金资助项目(20130095110022)

摘　　要：针对电离层延迟变化较剧烈时,现有的北斗导航卫星系统(BeiDou Navigation Satellite System,BDS)双频周跳探测方法探测效果会降低的问题,文章提出了改进的电离层延迟法,该方法首先基于灰色理论对电离层延迟变化量进行预测,然后根据实际值与预测值之差构造的电离层残差量作为新的周跳探测量进行周跳探测;通过实验验证了该方法在电离层延迟变化较剧烈,尤其在低采样率、低卫星高度角时,能有效弥补原来方法存在的不足。When the ionospheric delay rapidly changes,the detection effect of the dual cycle slip detection methods for BeiDou Navigation Satellite System(BDS)will reduce significantly.To solve this problem,an improved ionospheric delay method is proposed.In this method,the variation of ionospheric delay is predicted based on the grey theory,and then the ionospheric residual is constructed by the difference between the real and predicted values,which is regarded as the new cycle slips.The results show that the proposed method can effectively make up the deficiencies of the original method when the ionospheric delay rapidly changes,especially in low sample interval with low satellite elevation.

关 键 词：电离层延迟 双频 周跳探测 灰色理论 电离层残差量 

分 类 号：P228.43[天文地球—大地测量学与测量工程]