Abstract Since its launch on 20 May 2004, FORMOSAT-2 (FS2) is still the unique satellite to observe the transient luminous events (TLEs) from orbit. In nearly 9 years from 4 July 2004 to 31 May 2013, the number and distribution of TLEs observed are summarized. The instrument used for the observation of TLEs is called imager of sprites and upper atmospheric lightning (ISUAL). This is the first time the observation results are presented in the International Astronautical Congress (IAC). Due to the orbital characteristics of FORMOSAT-2, unobserved gaps exist between each two orbits. Also, the ISUAL has its detection threshold. In this paper, besides the presentation of above results, globalization extension of TLEs is performed based on FORMOSAT-2׳s observation. Factors considered include number of orbits ISUAL in operations, daytime and night-time, season, non-observed areas, observability of TLEs, limb view hiding, and other factors. An estimated global occurrence rate is 24TLEs/min, but this number is still much less than the possible potential rate of 195. To enhance the results, more instruments and longer observation time are required.
Highlights FORMOSAT-2 (FS2) is still the unique satellite to observe the transient luminous events (TLEs) from orbit. The number and distribution of TLEs observed from 4 July 2004 to 31 May 2013 are summarized. Due to the orbital characteristics of FORMOSAT-2, unobserved gaps and time exist. Globalization extension estimated a rate of 24 TLEs per minute, much less than the potential rate of 195. To enhance the results, more instruments and longer observation time are required.
Globalization extension of transient luminous events from FORMOSAT-2 observation
Acta Astronautica ; 98 ; 64-70
2014-01-08
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
AEP , associated electronics package , AP , array photometers , CCD , charged-couple device , CG , cloud to ground , +CG , positive cloud to ground lightning , −CG , negative cloud to ground lightning , DPU , data processing unit , ELVES (elves) , Emission of Light and VLF due to EMP Sources , EMP , electromagnetic pulse , FOV , field of view , FS2 , FORMOSAT-2 , IAA , International Academy of Astronautics , IAC , International Astronautical Congress , ICCD , intensified CCD , ISS , International Space Station , ISUAL , imager of sprites and upper atmospheric lightning , PIP , payload interface plate , RSI , remote sensing instrument , S/C , spacecraft , SOH , state-of-health , SP , spectrophotometer , SSR , solid-state recorder , TLE , transient luminous event , UT , universal time , VLF , very low frequency , Transient luminous event , Sprite , Blue jet , Gigantic jet
Globalization extension of transient luminous events from FORMOSAT-2 observation
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