Solid State Telescope(SST), one of the four space plasma instruments being developed for STSAT-1, is designed specifically to measure the energetic electrons with energies from 25KeV to 600KeV. With three other plasma instruments, Electro-static Analyzer(ESA), Langmuir Probe(LP), and Scientific Magnetometer(SM), SST allows in-situ detection of penetrating auroral electrons in the polar region and thus, the study of microscale physics with high time resolution data of the earth\\/s polar region that has not been previously achieved with other space missions. <br /><br />
As our society increasingly relies on spacecraft operations in the Earth’s magnetosphere, the forecast of the space weather become more significant. Specially, the long-duration (for several days) high intensity fluxes of relativistic electrons (more than MeV energy) have been revealed to affect serious operation failure or damage to spacecrafts and satellites. So many researchers have tried to understand the dynamics of those relativistic electrons: where they come from and how they get so high energy. This work focus on the possibility of substorm injected electrons as seed electrons of relativistic electrons at the inner magnetosphere during magnetic storm time and we tested ULF and whistler chorus wave as one of acceleration mechanisms of relativistic electrons. <br /><br />