首页> 美国卫生研究院文献>Wiley-Blackwell Online Open >The 6 September 2017 X‐Class Solar Flares and Their Impacts on the Ionosphere GNSS and HF Radio Wave Propagation
【2h】

The 6 September 2017 X‐Class Solar Flares and Their Impacts on the Ionosphere GNSS and HF Radio Wave Propagation

机译:2017年9月6日X级太阳耀斑及其对电离层GNSS和HF无线电波传播的影响

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

On 6 September 2017, the Sun emitted two significant solar flares (SFs). The first SF, classified X2.2, peaked at 09:10 UT. The second one, X9.3, which is the most intensive SF in the current solar cycle, peaked at 12:02 UT and was accompanied by solar radio emission. In this work, we study ionospheric response to the two X‐class SFs and their impact on the Global Navigation Satellite Systems and high‐frequency (HF) propagation. In the ionospheric absolute vertical total electron content (TEC), the X2.2 SF caused an overall increase of 2–4 TECU on the dayside. The X9.3 SF produced a sudden increase of ~8–10 TECU at midlatitudes and of ~15–16 TECU enhancement at low latitudes. These vertical TEC enhancements lasted longer than the duration of the EUV emission. In TEC variations within 2–20 min range, the two SFs provoked sudden increases of ~0.2 TECU and 1.3 TECU. Variations in TEC from geostationary and GPS/GLONASS satellites show similar results with TEC derivative of ~1.3–1.7 TECU/min for X9.3 and 0.18–0.24 TECU/min for X2.2 in the subsolar region. Further, analysis of the impact of the two SFs on the Global Navigation Satellite Systems‐based navigation showed that the SF did not cause losses‐of‐lock in the GPS, GLONASS, or Galileo systems, while the positioning error increased by ~3 times in GPS precise point positioning solution. The two X‐class SFs had an impact on HF radio wave propagation causing blackouts at <30 MHz in the subsolar region and <15 MHz in the postmidday sector.
机译:2017年9月6日,太阳发出了两个重要的太阳耀斑(SF)。分类为X2.2的第一个SF在UT 09:10达到峰值。第二个是X9.3,它是当前太阳周期中最密集的SF,在UT 12:02达到峰值,并伴有太阳无线电辐射。在这项工作中,我们研究了电离层对两个X级SF的响应及其对全球导航卫星系统和高频(HF)传播的影响。在电离层的绝对垂直总电子含量(TEC)中,X2.2 SF导致白天总体增加了2–4 TECU。 X9.3 SF在中纬度产生了约8-10 TECU的突然增加,在低纬度产生了约15-16 TECU的增强。这些垂直TEC增强的持续时间长于EUV发射的持续时间。在2–20 min范围内的TEC变化中,两个SF引起〜0.2 TECU和1.3 TECU的突然增加。对地静止卫星和GPS / GLONASS卫星TEC的变化显示出相似的结果,在太阳下地区,X9.3的TEC导数约为1.3–1.7 TECU / min,X2.2的TEC导数约为0.18–0.24 TECU / min。此外,对这两个SF对全球导航卫星系统导航的影响的分析表明,该SF不会在GPS,GLONASS或Galileo系统中造成失锁,而定位误差却增加了约3倍。在GPS精确点定位解决方案中。这两个X级SF对HF无线电波的传播产生了影响,导致太阳下地区<30 MHz以及午后时段<15 MHz的停电。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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