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Proceedings Paper

Photonics-based inverse synthetic aperture radar for near-field RCS calculation
Author(s): Angran Zhao; Sijie Liu; Xiangchuan Wang; Fangzheng Zhang; Shilong Pan
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Paper Abstract

A photonics-based inverse synthetic aperture radar (ISAR) for near-field RCS calculation is proposed. The proposed radar implements the function of radar range profile target recognition, 2D ISAR image and near-field RCS calculation. Firstly, a photonics-based ISAR is proposed with a frequency-quadrupled linear frequency-modulated continuous wave (LFMCW) signal covers 18-26 GHz. A 2D ISAR image with 2 cm*2 cm resolution is obtained. Secondly, a method of calculating the RCS from the ISAR image is also proposed. According to the Parseval theorem, by summing the pixel values of target area 2D ISAR image and multiplying by the scaling factor, the mean RCS value of target in the radar working band can be obtained. In the experimental demonstration, the standard metal spheres with diameters of 10 cm, 15 cm and 20 cm are tested 1.2 m away from the radar. The testing results show that the difference between the RCS test value and the theoretical value is less than 1.31 dB.

Paper Details

Date Published: 12 March 2020
PDF: 6 pages
Proc. SPIE 11435, 2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing, 114350G (12 March 2020); doi: 10.1117/12.2550112
Show Author Affiliations
Angran Zhao, Nanjing Univ. of Aeronautics and Astronautics (China)
Sijie Liu, Nanjing Univ. of Aeronautics and Astronautics (China)
Xiangchuan Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Fangzheng Zhang, Nanjing Univ. of Aeronautics and Astronautics (China)
Shilong Pan, Nanjing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 11435:
2019 International Conference on Optical Instruments and Technology: Optical Communication and Optical Signal Processing
Jian Chen; Yi Dong; Fabien Bretenaker, Editor(s)

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