Volume 7 Issue 6
Feb.  2019
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Ming Jing, Zhang Xiaoling, Pu Ling, Shi Jun. PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System[J]. Journal of Radars, 2018, 7(6): 770-776. doi: 10.12000/JR18068
 Citation: Ming Jing, Zhang Xiaoling, Pu Ling, Shi Jun. PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System[J]. Journal of Radars, 2018, 7(6): 770-776. doi: 10.12000/JR18068

# PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System

##### doi: 10.12000/JR18068
Funds:  The National Natural Science Foundation of China (61571099), The China Postdoctoral Science Foundation (2015M570778)
• Received Date: 2018-09-03
• Rev Recd Date: 2018-12-19
• Publish Date: 2018-12-28
• Array Synthetic Aperture Radar (ASAR) system radar imaging field has gained attention because of its three-dimensional (3-D) imaging ability. A novel Circular Array SAR (CASAR) system is employed for 3-D high-resolution radar imaging to overcome the drawbacks exhibited by linear array SAR in high-resolution imaging and by circular SAR in side-lobe suppression. Point Spread Function (PSF) model based on the CASAR system is derived, and the advantages of the new configuration of the circular array in 3-D imaging are theoretically analyzed. Prototype CASAR experimental system is built on the basis of the abovementioned analysis. PSF simulation experiments and outdoor 3-D CASAR imaging experiments under outdoor conditions are performed to verify performance of the CASAR system in 3-D SAR imaging. Compared imaging results acquired using linear array SAR, circular SAR, and CASAR system proves that the CASAR system has high-resolution 3-D SAR images and demonstrates effective side-lobe suppression capability.
•  [1] Devadithya S, Pedross-Engel A, Watts C M, et al. GPU-accelerated enhanced resolution 3-D SAR imaging with dynamic metamaterial antennas[J]. IEEE Transactions on Microwave Theory and Techniques, 2017, 65(12): 5096–5103. DOI:  10.1109/TMTT.2017.2766060 [2] Ren X Z, Qin Y, and Tian L J. Three-dimensional imaging algorithm for tomography SAR based on multiple signal classification[C]. Proceedings of 2014 IEEE International Conference on Signal Processing, Communications and Computing, Guilin, China, 2014: 120–123. DOI:  10.1109/ICSPCC.2014.6986165. [3] Xie H T, Shi S Y, An D X, et al. Fast factorized backprojection algorithm for one-stationary bistatic spotlight circular SAR image formation[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017, 10(4): 1494–1510. DOI:  10.1109/JSTARS.2016.2639580 [4] Chen L P, An D X, and Huang X T. A backprojection-based imaging for circular synthetic aperture radar[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2017, 10(8): 3547–3555. DOI:  10.1109/JSTARS.2017.2683497 [5] Liu X, Yu J, Zhao H, et al.. An along-track sparse imaging method for forward-looking array SAR[C]. Proceedings of IET International Radar Conference 2015, Hangzhou, China, 2015: 1–5. DOI:  10.1049/cp.2015.0996. [6] Shi J, Zhang X L, Yang J Y, et al. APC trajectory design for " one-active” linear-array three-dimensional imaging SAR[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(3): 1470–1486. DOI:  10.1109/TGRS.2009.2031430 [7] Wei S J, Zhang X L, and Shi J. Spaceborne-airborne bistatic linear array SAR high resolution 3-D imaging based on sparsity exploiting[C]. Proceedings of the 2016 19th International Conference on Information Fusion, Heidelberg, Germany, 2016: 1518–1522. [8] Axelsson S R J. Beam characteristics of three-dimensional SAR in curved or random paths[J]. IEEE Transactions on Geoscience and Remote Sensing, 2004, 42(10): 2324–2334. DOI:  10.1109/TGRS.2004.834802 [9] Tang L, Zhu Y F, and Fu Q. Stepped frequency SAR imaging based on compensation in Doppler domain[C]. Proceedings of 2014 IEEE International Conference on Signal Processing, Communications and Computing, Guilin, China, 2014: 627–631. DOI:  10.1109/ICSPCC.2014.6986269. [10] Li Y C, Zhang L, Liu B C, et al. Stepped-frequency inverse synthetic aperture radar imaging based on adjacent pulse correlation integration and coherent processing[J]. IET Signal Processing, 2011, 5(7): 632–642. DOI:  10.1049/iet-spr.2009.0301 [11] Shi J, Zhang X L, Sun H, et al.. Explanation of synthetic aperture 3-D imaging technique via EFIE[C]. Proceedings of the 2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, Seoul, South Korea, 2011: 1–4.
###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142

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## PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System

##### doi: 10.12000/JR18068
###### School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Funds:  The National Natural Science Foundation of China (61571099), The China Postdoctoral Science Foundation (2015M570778)

Abstract: Array Synthetic Aperture Radar (ASAR) system radar imaging field has gained attention because of its three-dimensional (3-D) imaging ability. A novel Circular Array SAR (CASAR) system is employed for 3-D high-resolution radar imaging to overcome the drawbacks exhibited by linear array SAR in high-resolution imaging and by circular SAR in side-lobe suppression. Point Spread Function (PSF) model based on the CASAR system is derived, and the advantages of the new configuration of the circular array in 3-D imaging are theoretically analyzed. Prototype CASAR experimental system is built on the basis of the abovementioned analysis. PSF simulation experiments and outdoor 3-D CASAR imaging experiments under outdoor conditions are performed to verify performance of the CASAR system in 3-D SAR imaging. Compared imaging results acquired using linear array SAR, circular SAR, and CASAR system proves that the CASAR system has high-resolution 3-D SAR images and demonstrates effective side-lobe suppression capability.

Ming Jing, Zhang Xiaoling, Pu Ling, Shi Jun. PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System[J]. Journal of Radars, 2018, 7(6): 770-776. doi: 10.12000/JR18068
 Citation: Ming Jing, Zhang Xiaoling, Pu Ling, Shi Jun. PSF Analysis and Ground Test Results of a Novel Circular Array 3-D SAR System[J]. Journal of Radars, 2018, 7(6): 770-776. doi: 10.12000/JR18068
Reference (11)

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