Image Simulations For The Advanced Optical Satellite (Alos-3)

The "Advanced Optical Satellite" (nicknamed "ALOS-3") is the next high-resolution optical mission as a successor of the Advanced Land Observing Satellite (ALOS) in Japan Aerospace Exploration Agency (JAXA), and now conducting the Critical Design Review (CDR) phase. The mission objecttives of ALOS-3 are (1) to contribute safe and secure social including provisions for natural disasters, and (2) to create and update geo-spatial information. The "wide-swath and high-resolution optical imager" is designed to be achieved the missions, which consists of the panchromatic band with 0.8 m ground sampling distance (GSD) and multi-spectral six bands with 3.2 m GSD, and the observation swath width is 70 km at nadir. In addition, the satellite has the body pointing capability within 60 deg. from nadir that will contribute to an emergency observation. In this study, the simulated images generation is introduced to investigate the feasibility of the missions as a part of pre-flight phase study.