The micro Synthetic Aperture Radar (SAR) satellite weighs less than 100 kg and synthesizes high-resolution images of a region of interest by processing the amplitude and phase information of the back-scattered echo signal. As it is crucial to acquire only the channel information of the region of interest to generate an ideal SAR image, many publications have addressed methods to minimize hardware errors and satellite maneuvers. Furthermore, the space environment affects hardware performance, such as variations in temperature and signal quality. In this study, a method for onboard compensation of X-band chirp signals considering the variation in temperature is proposed and verified by an analysis of the Impulse Response Function (IRF) using the data acquired by testing hardware in the thermal chamber.
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Kang et al. (2024) studied this question.
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