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| Evaluation of Jamming Effect on SAR Based on Method of Modified Structural Similarity |
| Han Guo-qiang①② Li Yong-zhen① Wang Xue-song① Xing Shi-qi① Liu Qing-fu① |
| ①(School of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China) ②(Unit 63892 of PLA, Luoyang 471003, China) |
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Abstract In this paper, an evaluation method based on modified structure similarity of jamming effects on synthetic aperture radar is proposed. This method can not only make good use of structure similarity as juncture between the subjective and the objective evaluation methods, but also utilize the character of gradient modulus which matches with the human vision system's multichannel model, eventually, the modified evaluation index named GSSIM (Gradient Structural SIMilarity) is obtained by nonlinear combination. Simulation results show that GSSIM has an obvious advantage over traditional evaluation indexes, such as MSE, PSNR, Correlation and so on. Besides reflecting the influences of jamming on Region Of Interest (ROI) in the image, it can keep identical to Human Vision System (HVS), and furthermore, it improves the efficiency and accuracy of entire evaluation system.
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Received: 18 May 2010
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Corresponding Authors:
Han Guo-qiang
E-mail: twhgq@163.com
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2011, Vol. 33 
