정지궤도 해양센서의 궤도상 광학 성능 평가

Abstract

After Geostationary Ocean Color Imager(GOCI) was launched at June 27th, 2010, it is operated to observe the Korean peninsula on the geostationary orbit as one of the three main payloads in COMS satellite. Generally, the performance indicators are GSD(Ground Sample Distance), MTF(Modulation Transfer Function), and SNR(Signal to Noise Ratio) that verify the optical performance of payload. Most of all, the MTF performance is widely used since it is closely related to reliability and accuracy of observational target information in aspects of satellite image application. Especially, in case of ocean color sensor, for confirming the ability of GOCI to separate the slight difference of ocean color information, on-orbit MTF performance test and SNR assessment should be performed.dicators are GSD(Ground Sample Distance), MTF(Modulation Transfer Function), and SNR(Signal to Noise Ratio) that verify the optical performance of payload. Most of all, the MTF performance is widely used since it is closely related to reliability and accuracy of observational target information in aspects of satellite image application. Especially, in case of ocean color sensor, for confirming the ability of GOCI to separate the slight difference of ocean color information, on-orbit MTF performance test and SNR assessment should be performed.