Synthetic aperture imaging lidar is an active new imaging system, which can offer a finer azimuth resolution than the SAR system. An indoor system of synthetic aperture imaging lidar is given, which is a demonstration about synthetic aperture to image rotating objects. Firstly, the basic principle is introduced. Then, the basic method and key techniques are analyzed. After that an improved system is given with the transmitting and the receiving lens apart from each other which can eliminate the interference efficiently. Finally, the block diagram and the result of imaging system are given, which prove the validity of the system and the feasibility of the synthetic aperture techniques in optical domain.
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