摘要
为了解决多角度SAR数据三维属性散射中心提取中出现的散射系数函数形式未知、数据量大的问题,提出了一种对散射系数进行参数化建模的方法。这种建模方法在忽略雷达频率对散射系数的影响的前提下,首先根据散射系数幅度分段,然后在段内利用二维多项式进行建模。通过仿真实验验证,该方法简单易行,通过参数化模型恢复的图像,和原始图像有很高的相似度。不过,这种方法不能应用于延展型属性散射中心,需要在下一步的工作中继续进行研究。
In order to solve the problems that the function form of the scattering coefficient is unknown and the data capacity is huge when extracting 3-dimensional attributed scattering center from multi-angle SAR data,this paper puts forward a parameterized modeling algorithm in terms of the scattering coefficient.Ignoring the influence of radar frequency,this modeling algorithm firstly divides the scattering coefficient into segments according to its amplitude,and then constructs models hy means of 2-dimensional polynomial.The simulation experiments indicate the fact that this algorithm is simple and the image restored by the parameterized model has a high similarity with that restored by the original data.However,this algorithm cannot be applied to stretched attributed scattering centers,which needs to be studied in future work.
出处
《雷达科学与技术》
2013年第5期544-550,568,共8页
Radar Science and Technology
关键词
多角度SAR数据
属性散射中心
参数化建模
二维多项式
multi-angle SAR data
attributed scattering center
parameterized modeling
2-dimensional polynomial
