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一种适用于超宽带SAR的改进的RDM算法

An Improved RDM Algorithm for UWB SAR
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摘要 RDM算法本质上是一种适合于高波段窄带SAR的算法,低波段超宽带SAR的长合成孔径、大距离迁徙的特点使得传统的RDM算法不再适用。本文首先分析了大距离迁徙对RDM算法的影响,在此基础上提出了一种改进的适合于超宽带SAR的扩展的RDM算法(ERDM),通过将正侧视SAR的长孔径等效成多个斜视模式SAR孔径的合成和距离弯曲(RC- MC)校正,有效地克服了超宽带SAR大距离迁徙和调频率非常数带来的不利影响。最后,通过计算机点目标仿真,验证了本文提出的算法的有效性。 An new Extended Reflectivity Displacement Method(ERDM )algorithm for UWB SAR is presented in this paper. This new method overcomes the disadvantage of long synthetic aperture and great range migration for UWB SAR and extends the RDM applicability. The results of simulation show that the method can work effectively.
出处 《信号处理》 CSCD 北大核心 2008年第1期91-94,共4页 Journal of Signal Processing
关键词 RDM 超宽带SAR ERDM RDM ERDM UWB SAR
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参考文献8

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