Chinese Optics Letters, 2017, 15 (11): 112801, Published Online: Jul. 19, 2018   

Photonics-based real-time and high-resolution ISAR imaging of non-cooperative target Download: 1135次

Author Affiliations
Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
Abstract
Real-time and high-resolution imaging is demonstrated based on field trial detection of a non-cooperative target using a photonics-based inverse synthetic aperture radar (ISAR). By photonic generation and de-chirping of broadband linear frequency modulation signals, the radar can achieve a high range resolution thanks to the large instantaneous bandwidth (8 GHz at the K band), as well as real-time ISAR imaging using low-speed analog-to-digital conversion (25 MSa/s). A small-size unmanned aerial vehicle is employed as the non-cooperative target, and ISAR imaging is realized with a resolution far better than those achieved by the previously reported photonics-based ISARs. The capability for real-time ISAR imaging is also verified with an imaging frame rate of 25 fps. These results validate that the photonics-based radar is feasible in practical real-time and high-resolution ISAR imaging applications.

Fangzheng Zhang, Qingshui Guo, Ying Zhang, Yao Yao, Pei Zhou, Daiyin Zhu, Shilong Pan. Photonics-based real-time and high-resolution ISAR imaging of non-cooperative target[J]. Chinese Optics Letters, 2017, 15(11): 112801.

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