利用北斗系统的电离层格网信息计算电离层延迟的方法  

A Method for Calculating Ionospheric Delay Using Ionospheric Grid Information of Beidou Navigation Satellite System

作　　者：赖山东 孙宏飞 LAI Shandong;SUN Hongfei(Jiangxi Institute of Natural Resources Surveying,Mapping and Monitoring,Nanchang 330009,China;Anhui Han-valley Geomatics Co.,Ltd.,Hefei 230051,China)

机构地区：[1]江西省自然资源测绘与监测院,江西南昌330009 [2]安徽汉谷测绘有限公司,安徽合肥230051

出　　处：《测绘与空间地理信息》2022年第12期98-102,共5页Geomatics & Spatial Information Technology

摘　　要：根据北斗系统(BDS)中的D2导航电文中所提供的电离层格网信息的结构和特点给出了一种能自动确定穿刺点四周格网点编号的方法,并以北斗的实测数据为例证明了该方法的正确性和可行性,从而实现了利用BDS的D2导航电文在增强区域中自动完成观测值的电离层延迟改正的计算方法,并能够为北斗系统的单频接收机用户提供服务。According to the structure and characteristics of the ionospheric grid in D2 navigation message of Beidou Navigation Satellite System,a method of calculating the four grid point numbers around the ionospheric pierce point is proposed.With the observational data of BDS,the validity and feasibility of the method is proved.In this way,the calculation method of ionospheric delay correction of observed values is realized automatically by using D2 navigation message of BDS in the enhanced area,and the service can be provided to users of single frequency receiver of BDS.

关 键 词：北斗卫星导航系统 D2导航电文 电离层格网 穿刺点 

分 类 号：P228.4[天文地球—大地测量学与测量工程]