收藏本站
收藏 | 手机打开
二维码
手机客户端打开本文

A Detection Method of the Ionosphere Anomaly in SBAS

【摘要】:In order to detect the slow varying ionosphere anomaly existing in the GNSS measurements in SBAS, an algorithm based on the carrier phase is proposed. On the basis of the analysis of the feature of ionosphere delay, the carrier-phase measurements with high accuracy is applied to reconstruct a temporal rate of ionosphere delay. Then, the temporal rate is processed by an adaptive filter to prevent it from the influence from the ionosphere anomaly. Finally, a virtual ionosphere delay vulnerable to the anomaly is established. A test variable for detecting the anomaly is set up by combining the real delay with the virtual delay and the hypothesis test method is utilized to check if there is an ionosphere anomaly. Based on the real measurements, the corresponding simulation is implemented and the results demonstrate that the algorithm proposed in the paper has a significant improvement on the detection speed. Furthermore, the effect on the estimates of the ionosphere corrections from the anomaly is greatly eliminated.

知网文化
【相似文献】
中国重要会议论文全文数据库 前9条
1 ;A Detection Method of the Ionosphere Anomaly in SBAS[A];第三届中国卫星导航学术年会电子文集——S05卫星导航增强与完好性监测[C];2012年
2 ;Estimation of Compass Satellite Differential Code Biases Using Combined GPS/Compass Observation[A];第三届中国卫星导航学术年会电子文集——S08卫星导航模型与方法[C];2012年
3 ;Evaluation of Ionospheric Correction Models in the Middle Latitude[A];第三届中国卫星导航学术年会电子文集——S08卫星导航模型与方法[C];2012年
4 ;Common-View Time Transfer based on COMPASS GEO Satellite[A];第三届中国卫星导航学术年会电子文集——S04原子钟技术与时频系统[C];2012年
5 Simon D P Williams;;The impact of a non-tidal ocean loading model of high temporal resolution on geodetic GPS height time series[A];第三届中国卫星导航学术年会电子文集——S08卫星导航模型与方法[C];2012年
6 ;An Integrity Monitoring Algorithm for Satellite Clock Based on Test Statistics[A];第三届中国卫星导航学术年会电子文集——S04原子钟技术与时频系统[C];2012年
7 ;ON IMPROVEMENT OF BARE SURFACE SOIL MOISTURE ESTIMATION WITH L-BAND DUAL-POLARIZATION RADAR[A];遥感定量反演算法研讨会摘要集[C];2010年
8 ;Real-time Maximum Correlation Matching Based on Approximated Local Gravity Map[A];第三届中国卫星导航学术年会电子文集——S09组合导航与导航新方法[C];2012年
9 ;Study on the relationship between land surface temperature and vegetation index and land cover in Beijing using Landsat TM images[A];遥感定量反演算法研讨会摘要集[C];2010年
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978