| 星载编队飞行InSAR地形图生成方法研究 |
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| 引用本文： | 唐智,周荫清,李景文.星载编队飞行InSAR地形图生成方法研究[J].宇航学报,2004,25(3):278-282,322. |
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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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| 基金项目： | 十五"预研资助项目(No.402040302) |
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| 摘 要： | 研究了星载编队飞行InSAR的空间几何关系及特点,给出了编队飞行InSAR的回波信号模型和高度计算公式,给出了相位与地形图高度的换算方法。对于InSAR系统特有的迎坡缩短等现象给出了有效的斜距地距变换方法,提出了几何作图实现方法和编程实现方法。根据真实地貌,分三种情况讨论了几何作图与编程实现。在仿真实验中,设置了圆锥体地面场景验证算法,校正后的图形能够反映地面真实场景。
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| 关 键 词： | InSAR 编队飞行 地形图生成 |
| 文章编号： | 1000-1328(2004)03-0278-05 |
Study on DEM generation in satellite-borne InSAR formation flying |
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| TANG Zhi,ZHOU Yin-qing,LI Jing-wen.Study on DEM generation in satellite-borne InSAR formation flying[J].Journal of Astronautics,2004,25(3):278-282,322. |
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| Authors: | TANG Zhi ZHOU Yin-qing LI Jing-wen |
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| Abstract: | The geometric relationship and characteristic of satellite-borne formation flying InSAR is studied.The echo signal model for formation flying InSAR and the formula for height calculation are given out.The transformation method for phase to height of DEM is put forward.In order to solve the problem of foreshortening in InSAR system particularly,a valid slant range to ground range transformation method is presented.The realization of geometry construct and the realization of programming are both proposed.According to real terrain,three situations are discussed in geometry construct and the realization of programming.In simulation experiment,a cone terrain is set to verify the algorithm.The DEM after correction can describe the real terrain. |
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| Keywords: | InSAR Formation flying DEM generation |
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