| 机载编队飞行InSAR的运动误差分析与补偿 |
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| 引用本文： | 唐智, 周荫清, 李景文. 机载编队飞行InSAR的运动误差分析与补偿[J]. 电子与信息学报, 2005, 27(6): 932-935. |
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| 作者姓名： | 唐智 周荫清 李景文 |
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| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100083 |
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| 摘 要： | 该文分析了机载编队飞行InSAR中的运动误差问题。将飞机间距变化(垂直航迹的基线变化)情况分为间距逐渐增大、间距逐渐减小、间距呈正弦曲线规律变化3种情况讨论。推导了相位变化与基线变化的定量关系, 给出了飞机间距变化和速度差异的仿真结果。采用方位向去斜坡处理,提出在测绘区域内放置两个控制点,补偿基线变化导致的相位误差,可以大幅度地提高整片区域数字高度模型的精度。仿真结果说明该分析正确。
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| 关 键 词： | InSAR 编队飞行 运动误差 |
| 文章编号： | 1009-5896(2005)06-0932-04 |
| 收稿时间： | 2004-01-19 |
| 修稿时间： | 2004-01-09 |
Motion Error Analysis and Compensation for Airborne Formation Flying InSAR |
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| Tang Zhi, Zhou Yin-qing, Li Jing-wen . Motion Error Analysis and Compensation for Airborne Formation Flying InSAR[J]. Journal of Electronics & Information Technology, 2005, 27(6): 932-935. |
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| Authors: | Tang Zhi ZHOU Yin-qing Li Jing-wen |
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| Affiliation: | School of Electronic and Information Engineering, Beihang University, Beijing 100083, China |
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| Abstract: | Motion error problem for airborne formation flying InSAR is analyzed. The plane interval changes (across track baseline changes) are discussed in three situations: interval increasing, interval decreasing, interval changing according to sine curve. Phase changes with baseline changes are derived quantificationally. The simulation result of plane interval changes and velocity difference are given out. Azimuth slope eliminating is adopted. Two control points are set in topographic area to compensate the phase error of baseline changes. This algorithm can improve the digital elevation model precision for whole area. The simulation results prove that the analysis is right. |
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| Keywords: | InSAR |
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