摘要
从SAR图像的F .Leberl构像模型出发 ,推导了成像载体匀速运动条件下的SAR图像定向参数的直接变换 (DirectTransformationforF .LeberlModel,F .LDT)解法。通过比较F .LDT解法与F .Leberl构像方程线性化迭代解法的实验结果 ,得出结论 :F .LDT解法可以满足精度要求 ,且无需初值 ,不需迭代 ,计算过程简单 ,避免了线性化迭代方法不收敛的情况。最后对影响F .LDT解法精度的因素进行了分析。
In this paper,a Direct Transformation for F.Leberl Model (F.LDT) method for the solution to SAR directional parameters is introduced,which is derived from the F.Leberl equation on condition that the carrier's velocity being equal. In the experiments,we compared the results of the F.LDT method with that of the linear method. The results indicate that the F.LDT method is valid,which has the advantages of needing no initial value and no interation, What's more,it can avoid the case without convergence. Finally,we analysed the factors that affect the precision.
出处
《测绘学院学报》
北大核心
2002年第4期272-275,279,共5页
Journal of Institute of Surveying and Mapping
基金
国家自然科学基金资助项目 (698962 5 0 -4 )
国家 863项目 (2 0 0 1AA13 2 0 11)
