摘要
利用GPS电离层探测技术分析了2010-08-01太阳风暴对全球电离层VTEC造成的扰动异常影响。受朝向地球的日冕物质抛射影响,08-03首先对北美地区电离层VTEC产生扰动异常,最大值达到15TECu。由于地球自转,发生电离层VTEC异常集中的区域会随太阳直射点向西移动,一般发生于其所在区域的地方时13:00～17:00。另外,还分析了此次太阳风暴对GPS观测数据质量及电离层高阶项误差的影响。结果表明,此次太阳风暴期间,GPS观测数据质量并未受到明显的影响,但使得L1、L2载波的电离层高阶项误差增大,误差影响达到cm级。
We analyzed the disturbance anomalyin the global ionosphere VTEC caused by so- lar storm on August 1,2010, based on the GPS ionosphere detection technology. Affected by the Coronal Mass Ejection toward Earth, the solar storm had some impact on the ionosphere VTEC of North American on August 3, and the maximal VTEC anomaly was 15 TECu. Be- casue of the earth rotation, the ionosphere VTEC anomaly area would move to the west a- long with the sun point-blank point, and the ionosphere VTEC anomaly generally occurred at local time 13.00-17 ..00. In addition, we analyzed the impact of this solar storm on the quality of GPS observation data and ionosphere higher order term error. The result showed that GPS observations weren＇t influenced obviously, but this solar storm made ionosphere higher order term error on L1 and L2 carriers larger, and the error influence reached to centimeter level during this solar storm.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第6期689-693,共5页
Geomatics and Information Science of Wuhan University
