摘要
GNSS数据质量可为高精度数据处理提供基础性的参考信息,目前GPS数据质量检查方法成熟且数据资源丰富,而北斗数据质量缺少系统全面的分析。该文介绍北斗观测数据质量检查内容和方法,并基于国家基准站计算了北斗数据多路径效应、周跳、信噪比等质量结果,分析了北斗质量特性和影响因素,并将北斗与GPS进行了对比。结果表明,北斗数据多路径误差、信噪比等质量指标与高度角和信号频率有关,在相同环境下北斗数据质量在多路径误差方面优于GPS数据质量,信噪比方面北斗SN2优于GPS,SN1和SN3较GPS稍差。
GNSS data quality provides basic reference information for high-precision data process- ing. At present, GPS data quality inspection methods are mature and rich in data resources, while BDS data quality is lack of systematic and comprehensive analysis. This paper introduces the contents and meth- ods of BDS observation data quality inspection, and calculates the quality results of BDS data multipath effect, cycle jump, signal to noise ratio based on national reference stations, analyzes the quality charac- teristics and influencing factors of BDS, and the data quality of BDS and GPS is compared. The results show that the value of MP and SN of BDS data are related to the height and signal frequency. Under the same environment, the MP of the BDS data is superior to the GPS data quality, and the BDS＇s SN2 is su- perior to the GPS, SN1 and SN3 are slightly worse than GPS.
出处
《测绘科学》
CSCD
北大核心
2017年第7期29-35,共7页
Science of Surveying and Mapping
基金
国家863计划(2014AA123104)
测绘地理信息公益性行业科研专项(201512006)
国家重点研发计划项目(2016YFB0501405)
国家基础测绘科技项目(2016KJ0205)
关键词
国家基准站
北斗数据
质量
多路径误差
信噪比
national reference stations
BDS data
quality
multi-path error
signal to noise ratio
