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http://dx.doi.org/10.5394/KINPR.2011.35.6.477

How sun spot activity affects on positioning accuracy?: Case study of solar storm  

Yoo, Yun-Ja (Korea Ocean Research & Development Institute)
Cho, Deuk-Jae (Korea Ocean Research & Development Institute)
Park, Sang-Hyun (Korea Ocean Research & Development Institute)
Publication Information
Journal of Navigation and Port Research / v.35, no.6, 2011 , pp. 477-482 More about this Journal
Abstract
Solar flares have the 11-year cycle and release a large energy which may produce coronal mass ejections (CME). The NOAA (National Oceanic and Atmospheric Administration) predicted that the sun spot activity will be maximized in 2013-2014. A strong solar flare can cause the disturbance of global positioning system including various communication of TV, radio broadcasting. The actual solar storm in 1989 caused power outages in Canada during 9 hours and about 600 million people had experienced a blackout. Such a solar storm can shorten the GPS satellite's life span about 5 to 10 years which can resulted in economic loss considering the amount of multi-billion won. This paper analyzed the influence of recent X-class solar storm occurred on 15th of February about 10:45 this year that was reached Korea (Bohyun observatory) on 18th of February about 10:30 (01:30 - UTC), and compared with the data before and after a week. The proton data of 18th of February considered that the solar storm reached on earth showed a fluctuation compared to the data before and after a week. The positioning results at Daejeon and Seoul of Korea also showed higher positioning error compared to the data before and after a week results.
Keywords
sun spot activity; solar flares; solar storm; RINEX data; positioning accuracy;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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