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首页> 外文会议>Saint Petersburg International Conference on Integrated Navigation Systems; 20050523-25; Saint Petersburg(RU) >IONOSPHERE BEHAVIOR STUDIES BASED ON GPS MEASUREMENTS
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IONOSPHERE BEHAVIOR STUDIES BASED ON GPS MEASUREMENTS

机译：基于GPS测量的电离层行为研究

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Brazil is crossed by the geomagnetic equator and it is an appropriate site to study of effects like solar storms on the IEA. The IEA is characterized by high values of TEC that implies in time delays greater than the ones typically of regions outside it. Large ionospheric gradients, as the ones present in the IEA, cause refraction effects on the rays greater than the ones presented at regions far from the IEA. Those effects can result in convergence or divergence producing focusing or spreading in the GPS signal power. In order to do studies on the VTEC over Brazil, it was analyzed data obtained from stations of the "Rede Brasileira de Monitoramento Continuo" [Brazilian's Continuously Monitoring Network] (RBMC) in RINEX (Receiver Independent Exchange) format. Programs were developed to simulate the Klobuchar model and then to compute the time delay correction. With RINEX data, using the pseudorange, the VTEC can be estimated. Analyzing the RINEX files through all the seasons of the year and mainly in the period of major solar activity, it is possible to establish the relation between the amount of error corrected by the Klobuchar model and the amount of error that effectively should be corrected in the geomagnetic equator region.
机译：巴西与地磁赤道交叉，是研究IEA太阳风暴等影响的合适地点。 IEA的特点是TEC值很高，这意味着时间延迟要大于其外部区域的典型延迟。与IEA中存在的电离层相比，大的电离层坡度对射线的折射影响要比在远离IEA的区域中呈现的电离层大。这些影响会导致会聚或发散，从而在GPS信号功率中产生聚焦或扩散。为了对巴西的VTEC进行研究，以RINEX（接收方独立交换）格式对从“巴西连续监测网”（巴西连续监测网）（RBMC）的电台获得的数据进行了分析。开发了程序来模拟Klobuchar模型，然后计算时间延迟校正。利用RINEX数据，使用伪距，可以估算VTEC。通过分析一年中所有季节的RINEX文件，以及主要在主要太阳活动期间的RINEX文件，可以建立由Klobuchar模型校正的误差量与应该有效校正的误差量之间的关系。地磁赤道区域。

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