KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Author: search.filters.author.Hemmakorn, N.Subject: search.filters.subject.Ionospheric scintillation

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    The analysis of ionospheric scintillation on the global Positioning System (GPS) at Bangkok
    (2006-12-01)
    Theerapatpaiboon, P.
    ;
    Supnithi, P.
    ;
    Leelaruji, N.
    ;
    Hemmakorn, N.
    This paper presents analysis of ionospheric scintillation on GPS signal (1575.45 MHz) by using the GSV4000 GPS receiver installed at KMITL. The characteristic of ionospheric scintillation on GPS signal are analyzed by employing S<inf>4</inf> index to identify the amplitude scintillation and σ<inf>ø</inf>(60 sec) to identify the phase scintillation, From the results, we found that the ionospheric scintillation phenomena impact on the GPS signal leading to the error in the global positioning system, differ from the non-scintillation period more than 20 meters. © 2006 ICASE.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    The effects of sumatra-andaman earthquake on total ionospheric electron content (TEC) and ionospheric scintillation of GPS signal in thailand
    (2005-12-01)
    Theerapatpaiboon, P.
    ;
    Leelaruji, N.
    ;
    Hemmakorn, N.
    ;
    Supnithi, P.
    This paper presents the effects of Sumatra-Andaman earthquake (26 December 2004) on the total ionospheric electron content (TEC) by using the TEC Meter (JAVAD) installed at KMITL. From the results, we found that the total ionospheric electron content enhancement at the time of this earthquake is higher than other days about 7 TEC units. Furthermore, the study includes the effect of this phenomenon on GPS signal (1575.45 MHz) by employing S<inf>4</inf> index and σ<inf>φ</inf> (60sec) to identify the severity of amplitude scintillation and phase scintillation, respectively. From the observation, we can conclude that TEC variation is the cause of ionospheric scintillation leading to the position error on GPS about 8 meters. © 2005 IEEE.