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移变模式双基地SAR的分辨特性及速度选择 被引量：2

The Resolution Ability and Velocity Determination in Translational Variant Bistatic SAR
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摘要 分辨率是SAR的重要指标之一,研究移变模式双基地SAR的分辨特性,旨在为该模式系统性能指标的设计提供依据。首先采用梯度方法给出了移变模式下地面距离分辨率的计算公式,并考察了其随位置的变化。然后从成像处理的角度推导出移变模式下方位分辨率的计算公式,并给出了求解方法。最后以"星空"配置为例,仿真了不同空载平台速度下,共同照射范围、合成孔径时间以及方位分辨率的变化情况,为该模式下速度的选择提供了参考。 Ground resolution is very important to SAR images. This paper studied the resolution ability of translational variant bistatic SAR for the designing of proper bistatic configurations. It firstly analyzed the range ground resolution and its relationship with locations using the gradient method. Then it deduced out the azimuth resolution formula and described the calculating method. Finally, simulation results are given and some hints for velocity determination in ＇ space-air＇ configuration is also addressed.
作者 仇晓兰 胡东辉 丁赤飚
机构地区 中国科学院空间信息处理与应用系统技术重点实验室 中国科学院电子学研究所 中国科学院研究生院
出处 《宇航学报》 EI CAS CSCD 北大核心 2009年第4期1609-1614,共6页 Journal of Astronautics
基金 中国科学院知识创新工程青年人才领域前沿项目
关键词 双基地SAR 分辨率 合成孔径时间 多普勒带宽 移变模式 Bistatic SAR Resolution Synthetic time Doppler band Translational variant
分类号 TN959.72 [电子电信—信号与信息处理]
  • 相关文献

参考文献14

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二级参考文献28

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共引文献32

同被引文献18

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二级引证文献2

宇航学报
2009年 第4期

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