| 机载SAR图像定向参数的F．LDT解法 |
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| 引用本文： | 靳国旺,朱彩英.机载SAR图像定向参数的F．LDT解法[J].测绘学院学报,2002,19(4):272-275,279. |
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| 作者姓名： | 靳国旺 朱彩英 |
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| 作者单位： | 信息工程大学测绘学院 河南郑州450052
(靳国旺)，信息工程大学测绘学院 河南郑州450052(朱彩英) |
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| 基金项目： | 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) |
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| 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找（Direct Transformation for F.Leberl Model。F.LDT）解法。通过比较F.LDT解法与F.Leberl构像方程线性代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。
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| 关 键 词： | F.LDT解法 SAR图像 构像方程 直接解法 迭代解法 精度 遥感图像 |
The F.LDT Method for Airborne SAR Directional Parameters |
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| JIN Guo-wang,ZHU Cai-ying Institute of Surveying and Mapping,Information Engineering University,Zhengzhou ,China.The F.LDT Method for Airborne SAR Directional Parameters[J].Journal of Institute of Surveying and Mapping,2002,19(4):272-275,279. |
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| Authors: | JIN Guo-wang ZHU Cai-ying Institute of Surveying and Mapping Information Engineering University Zhengzhou China |
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| Institution: | JIN Guo-wang,ZHU Cai-ying Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China |
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| Abstract: | 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. |
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| Keywords: | SAR Image imaging equation Direct Transformation for F Leberl Model |
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