Abstract
The Small Demonstration Satellite 4 (SDS-4) is the first zero momentum three-axis controlled 50kg class satellite from J AX A. It was launched on May 17, 2012 on H-IIA Launch Vehicle, and, SDS-4 has four main demonstration missions: (1) Space-based automatic identification system experiment for tracking ships(SPAISE), (2) Flat-plate heat pipe on-orbit experiment(FOX), (3) Quartz crystal Microbalance for contamination environment monitoring(QCM), and (4) In-flight experiment of space materials using THERME(IST). SDS-4 was required reduction of system noise by SPAISE mission requirement, and conducted several system EMC test in system test phase. This paper reports on the specific antinoise measures and summarized how adaptation to the small satellite in the future.
