摘要
与现有加密方法的处理方式不同,回波数据置乱方法是对保证回波数据安全的另一种有益尝试。回波数据置乱方法通过降低图像的质量和图像的分辨率,从而影响非法截获者对图像的判读,因此对于回波数据的安全同样具有重要的意义。文章结合SAR成像原理,从理论上分析了回波数据行列置乱和I/Q置乱方法的成像效果,并通过仿真验证了理论分析成像效果的正确性。
Differ from the existing method of encryption, echo data disorder method was another helpful attempt for the security of echo data. Echo data disorder could degrade the quality and resolution of image, which may affect enemy＇ s comprehension to image, therefore echo data disorder method makes important significance in the security of echo data. Combining with SAR imaging principle, the paper analyzed the imaging effect after echo data row-column disorder and I/Q disorder theoretically, and validated the analysis theory result of imaging effect using simulation.
出处
《电子对抗》
2010年第6期10-14,共5页
Electronic Warfare
关键词
行列置乱
I/Q置乱
成像效果
row-column disorder
I/Q disorder
imaging effect
