摘要
针对现有BDS在南极地区的导航服务性能研究缺乏实测数据,主要依赖仿真进行分析的问题,采用第29次南极科考中"雪龙号"采集的BDS观测数据,对BDS区域系统在南极地区的导航服务性能进行研究:主要分析BDS在南极的信噪比、周跳及电离层延迟等数据质量;并通过解算获得南极地区BDS的精度衰减因子、精度等定位性能。结果表明:在中山站附近地区BDS的数据质量和服务性能与标准服务区相比较差;仅采用BDS单系统定位能够在90%以上的时段保证20m的精度,能满足基本的导航需求。
Aiming at the problem that it is lack of measured data for the study of BDS navigation performance in the Antarctica,which mainly relies on simulation analysis,the paper used BDS data collected by Xuelong Ship in the 29 th Antarctic expedition to study on the performance of BDS navigation services in the Antarctica:the data quality,such as SNR,cycle slip and ionospheric delay,of BDS in the Antarctic was analyzed,and the positioning performance such as dilution of precision and accuracy was obtained through calculation.Result showed that the data quality and service performance of BDS near Zhongshan station were worse than those of standard service areas;while the BDS positioning of single system would have the accuracy of20 mduring more than 90 % of the period,which could meet the basic needs of navigation.
出处
《导航定位学报》
CSCD
2017年第4期64-69,共6页
Journal of Navigation and Positioning
关键词
BDS
南极
数据质量
定位精度
服务性能
BeiDou navigation satellite system
Antarctica
data quality
positioning accuracy
service performance
