摘要
针对高频GNSS数据动态精密单点定位技术进行了研究,详细分析了RTKLIB、PANDA、Bernese 3种软件采用的定位模型、原理及精度,利用国际IGS站坐标对动态精密单点定位精度进行检核。最后选取2011年日本9.0级地震周边3个IGS基准站的1 Hz观测数据进行单历元动态数据处理,并分析站点位置精度及动态形变时间序列,验证了PANDA、Bernese动态精密单点定位精度普遍达到厘米级,RTKLIB精度较差。将解算结果同地震仪数据进行比较,两者具有良好的一致性,说明了高频GNSS观测数据可用于地震震级的迅速确定,并可作为地震仪的一种有效补充手段。
Based on high frequency GNSS data,this paper studies the dynamic precise point positioning technology,analyzes the positioning model,principle,and precision of RTKLIB,PANDA,and Bernese software,and verifies dynamic precise point positioning accuracy using international IGS stations coordinate.Lastly,single epoch dynamic data processing is carried out on 1 Hz observation data of three IGS reference stations around Japan 9.0 magnitude earthquake epicenter in 2011,station location changes and the dynamic deformation time series are analyzed.The PANDA and BERNESE dynamic precise point positioning accuracy reaches one centimeter level,while RTKLIB accuracy is poor.By comparing the calculating results with the seismograph data,it shows that both have good consistency,which illustrates the high frequency GNSS observations can be used to quickly determine the earthquake magnitude,as an effective supplementary means of seismograph.
作者
邓诗彬
DENG Shibin(Huihua Surveying and Mapping Co.,Ltd.,Dongguan 523080,China)
出处
《测绘与空间地理信息》
2020年第11期126-129,共4页
Geomatics & Spatial Information Technology
关键词
高频GNSS
精密单点定位
中国地壳运动监测网络
地震监测
high frequency GNSS
PPP
crustal movement observation network of China(CMONOC)
earthquake monitoring
