A Plan of Spaceborne ISAR Satellite Imaging System Aiming at Space Objects

Propose a plan of spaceborne inverse synthetic aperture radar (SISAR) imaging to space object based on present techniques and equipments, and provide practical approach from on-board-computer (OBC) to payload to carry out mission requirements. Space objects are classified into three categories through the analyses of motion characters, three-axis-stabilized satellite, spin-stabilized satellite and space debris. Then simulation models are established respectively to achieve imaging investigations. The result shows that objects belonged to three-axis-stabilized and spin-stabilized satellite can be reconstructed clearly if proper parameters are set, and space debris can be detected and estimated correctly. The primary results verify the feasibility of SISAR system.