The design of MSC (multi-spectral camera) system operation

Multi-spectral camera (MSC) is a payload on the KOMPSAT-2 satellite to perform the Earth remote sensing. The instrument images the Earth using a push-broom motion with a swath width of 15 km and a ground sample distance (GSD) of 1 m over the entire field of view (FOV) at altitude 685 Km. The installment is designed to have an on-orbit operation duty cycle of 20% over the mission lifetime of 3 years with the functions of programmable gain/ offset and onboard image data compression/storage. The MSC instrument has one (1) channel for panchromatic imaging and four (4) channels for multi-spectral imaging covering the spectral range from 450 nm to 900 nm using TDI CCD Focal Plane Array (FPA). In this work, the architecture and function of MSC hardware including electrical interface and the operation concept which have been established based on the mission requirements are described. The design and the preparation of MSC system operation are analyzed and discussed.