• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Proceedings of the 54th annual meeting : Taking navigation to new heights >The Effect of Flares on GPS Satellite Orbits
【24h】

The Effect of Flares on GPS Satellite Orbits

机译：耀斑对GPS卫星轨道的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The purpose of this paper is to estimate the magnitude of the effect of large solar flares on GPS satellite orbits. This is done by computing the change in acceleration brought about by a change in the solar model parameter due to the flare intensity by using the model of Cappelari, Velez and Fuchs, with cross-sectional areas and reflectivity values for block I and II satellites from Fliegel, Gallini and Swift. Satellite orientation and orbital parameters are assumed. Then, the equation of relative motion (Newton's law of gravitation and 2nd law) is used to compute the orbital position of the satellite for various flare durations with and without the perturbing acceleration from the flare. The resulting second order differential equations are solved by using a fourth order Runge-Kutta technique. The resulting differences in position are tabulated for various flare durations. The report concludes that by using a solar constant only; errors larger than 1 cm may result due to a change in solar radiation pressure in the event ofrna large flare. Additionally it was noted that long term dips or rises in the total solar luminosity can cause orbital errors up to 7cm in a GPS satellite orbital period.
机译：本文的目的是估计大太阳耀斑对GPS卫星轨道的影响程度。这是通过使用Cappelari，Velez和Fuchs模型计算由耀斑强度引起的太阳模型参数变化所引起的加速度变化来完成的，其中I和II块卫星的横截面积和反射率值来自Fliegel，Gallini和Swift。假设卫星方向和轨道参数。然后，使用相对运动方程式（牛顿引力定律和第二定律）来计算在有和没有来自耀斑的加速度的情况下，各种耀斑持续时间下卫星的轨道位置。通过使用四阶Runge-Kutta技术求解所得的二阶微分方程。表中列出了各种耀斑持续时间产生的位置差异。该报告得出的结论是，仅使用太阳常数。如果发生大的耀斑，可能会由于太阳辐射压力的变化而导致大于1 cm的误差。此外，还注意到，总的太阳光度的长期下降或上升会在GPS卫星轨道周期内引起高达7cm的轨道误差。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号