Development of SIGMA(KHUSAT-3) CubeSat Mission
Abstract
Kyung Hee University (KHU) has been developing a CubeSat for the space science mission called Scientific cubesat with Instrument for Global Magnetic field and rAdiation (SIGMA), which includes Tissue Equivalent Proportional Counter (TEPC) and a magnetometer. Four institutes have participated in the SIGMA mission: School of Space Research at Kyung Hee University, Korea Astronomy and Space science Institute, York University, and University of New Hampshire. SIGMA has a 3-unit CubeSat, and the weight is about 3.2 kg. The main payload is TEPC which can measure the Linear Energy Transfer (LET) spectrum and calculate the equivalent dose for the complicated radiation field in the space. The magnetometer is a secondary payload using a miniaturized fluxgate magnetometer. We expect it to have a 1 nT resolution in the dynamic range of ±65535 nT. An Attitude Control System (ACS) uses torque coils, a sun sensor, and a magnetometer and spins the SIGMA spacecraft 4 rpm with the spin axis perpendicular to the ecliptic plane. Communication system of SIGMA consists of UHF uplink and S-band downlink. We had finished CDR and most test procedures of the SIGMA mission, including the operating scenario, radio communication, and electrical function test. In this paper, we introduce the system design and the scientific purpose of the SIGMA CubeSat mission. The miniaturized instruments and spacecraft spinning operation that is developed for the SIGMA mission will contribute to an important role for future small satellite space missions.
Poster
Development of SIGMA(KHUSAT-3) CubeSat Mission
Kyung Hee University (KHU) has been developing a CubeSat for the space science mission called Scientific cubesat with Instrument for Global Magnetic field and rAdiation (SIGMA), which includes Tissue Equivalent Proportional Counter (TEPC) and a magnetometer. Four institutes have participated in the SIGMA mission: School of Space Research at Kyung Hee University, Korea Astronomy and Space science Institute, York University, and University of New Hampshire. SIGMA has a 3-unit CubeSat, and the weight is about 3.2 kg. The main payload is TEPC which can measure the Linear Energy Transfer (LET) spectrum and calculate the equivalent dose for the complicated radiation field in the space. The magnetometer is a secondary payload using a miniaturized fluxgate magnetometer. We expect it to have a 1 nT resolution in the dynamic range of ±65535 nT. An Attitude Control System (ACS) uses torque coils, a sun sensor, and a magnetometer and spins the SIGMA spacecraft 4 rpm with the spin axis perpendicular to the ecliptic plane. Communication system of SIGMA consists of UHF uplink and S-band downlink. We had finished CDR and most test procedures of the SIGMA mission, including the operating scenario, radio communication, and electrical function test. In this paper, we introduce the system design and the scientific purpose of the SIGMA CubeSat mission. The miniaturized instruments and spacecraft spinning operation that is developed for the SIGMA mission will contribute to an important role for future small satellite space missions.
