| 基于Kalman滤波的星载双天线InSAR基线误差估计 |
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| 引用本文： | 王晓光,王治强,杨新.基于Kalman滤波的星载双天线InSAR基线误差估计[J].测绘学报,2010,39(6):561-565. |
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| 作者姓名： | 王晓光 王治强 杨新 |
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| 作者单位： | 中国科学院,光电研究院,北京100190;中国科学院,研究生院,北京,100049;中国科学院,光电研究院,北京100190 |
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| 摘 要： | 星载干涉合成孔径雷达（InSAR）基线的高精度测定是获取地面数字高程信息的关键技术。对双天线InSAR系统，采用光学相机和激光测距仪相结合实时动态测量基线。由于存在仪器误差和几何误差等，为满足干涉基线的确定精度，基于基线测量系统，构建状态方程和测量方程，并结合天线支撑臂模态分析，设计了Kalman滤波器，确定干涉基线的长度和指向。模拟仿真结果显示，该滤波器能够有效地估计干涉基线长度和指向，满足基线确定精度要求。
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| 关 键 词： | 合成孔径雷达 干涉基线 Kalman滤波 |
| 收稿时间： | 2009-12-17 |
| 修稿时间： | 2010-04-23 |
Baseline Error Estimation of Spaceborne Dual-antenna InSAR Based on Kalman Filter |
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| WANG Xiaoguang,WANG Zhiqiang,YANG Xin.Baseline Error Estimation of Spaceborne Dual-antenna InSAR Based on Kalman Filter[J].Acta Geodaetica et Cartographica Sinica,2010,39(6):561-565. |
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| Authors: | WANG Xiaoguang WANG Zhiqiang YANG Xin |
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| Institution: | WANG Xiaoguang1,2,WANG Zhiqiang1,YANG Xin11.Academy of Optic-electronics,Chinese Academy of Sciences,Beijing 100190,China,2.Graduate University,Beijing 100049 |
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| Abstract: | Considering that the determination precision of interferometric baseline of spaceborne dual-antenna InSAR would be reduced due to the effect of measurement errors and mast oscillations,an onboard estimator is proposed.Based on the baseline measurement system which comprises the optical camera and laser range finder,a Kalman filter was designed,which got blended with a second-order model of the mast flexible dynamics.Simulations conducted show that the filter could precisely estimate the baseline vector erro... |
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| Keywords: | SAR interferometric baseline Kalman filter |
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