| GEO-LEO双站SAR地面分辨特性及轨道构型分析 |
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| 引用本文： | 王跃锟,李真芳,张金强,姬莉.GEO-LEO双站SAR地面分辨特性及轨道构型分析[J].系统工程与电子技术,2017,39(5):996-1001. |
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| 作者姓名： | 王跃锟 李真芳 张金强 姬莉 |
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| 作者单位： | 西安电子科技大学雷达信号处理国家重点实验室, 陕西 西安 710071 |
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| 摘 要： | 针对地球同步轨道卫星发射低轨道卫星接收的新体制双站合成孔径雷达(geosynchronous-earth-orbit-low-earth-orbit bistatic synthetic aperture radar,GEO-LEO BiSAR)具有收发平台轨道差异大、空间大尺度异构等特点,对地面分辨特性和轨道构型进行了分析。文中从收发平台的空间几何关系出发,深入分析了地面二维分辨率和分辨率方向角等性能,给出在不同观测模式下的构型约束规律,并规划了轨道构型设计方案。仿真实验结果验证了理论分析的正确性。
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Ground resolution characteristic and orbital configuration analysis for GEO-LEO BiSAR |
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| WANG Yuekun,LI Zhenfang,ZHANG Jinqiang,JI Li.Ground resolution characteristic and orbital configuration analysis for GEO-LEO BiSAR[J].System Engineering and Electronics,2017,39(5):996-1001. |
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| Authors: | WANG Yuekun LI Zhenfang ZHANG Jinqiang JI Li |
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| Institution: | National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China |
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| Abstract: | The bistatic synthetic aperture radar (BiSAR) system consists of a geosynchronous earth orbit (GEO) illuminator and a low earth orbit (LEO) receiver. The new synthetic aperture radar (SAR) system has the characteristics of large differences of platform orbits and hybrid configurations. The ground resolution characteristics and orbital configurations of GEO-LEO BiSAR are analyzed. Starting from modeling geometry, the performance of two-dimensional (2D) ground resolution and resolution direction angle is analyzed in detail. Then the bistatic orbital contraints of different observation modes are obtained, and the planning scheme of orbital configuration is designed. Simulation results show the validity of the theoretical analysis. |
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