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柔性基线抖动对星载双天线InSAR系统性能的影响分析 被引量：3

Analysis of Spaceborne Dual-antenna InSAR System Characteristic Under Flexible Baseline Oscillation
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摘要 该文针对星载双天线InSAR存在柔性基线抖动现象,分析了其对系统主要性能的影响。首先建立了基线抖动模型,在一定参数范围内,得到了简化的副天线回波信号模型,采用改进的2维频域算法可得原始回波数据;分析波束失准并提出了一种波束对准方案;阐述了低频/高频抖动对SAR图像与干涉图的影响。以典型系统参数为例,数值模拟和理论分析结果一致,可为系统设计和应用提供一定的理论参考。 The main performance of spaceborne dual-antenna InSAR system in case of flexible baseline oscillation is investigated.Based on the mast motion model,a reduced raw echo signal of the slave antenna is derived under a limited condition.Then,the antenna beam misalignment is analysed and an alignment scheme is proposed.Finally,the oscillation effect on the SAR image resolution and the interferogram coherence is expounded for both the slow and high frequency.In the example of typical system,theoretical analysis and numerical simulation conducted show the result is consistent,which could provide an reference for the system design and application.
作者 王晓光 王治强 杨新 刘薇
机构地区 中国科学院光电研究院 中国科学院研究生院
出处 《电子与信息学报》 EI CSCD 北大核心 2011年第5期1114-1118,共5页 Journal of Electronics & Information Technology
关键词 INSAR 基线抖动 波束失准 干涉图 InSAR Baseline oscillation Beam misalignment Interferogram
分类号 TN958 [电子电信—信号与信息处理]
  • 相关文献

参考文献11

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共引文献16

同被引文献21

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二级引证文献3

电子与信息学报
2011年 第5期

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