| 分布式小卫星SAR回波信号仿真 |
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| 引用本文： | 武昕伟,张绪锦,张长耀.分布式小卫星SAR回波信号仿真[J].系统仿真学报,2007,19(13):3056-3059,3100. |
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| 作者姓名： | 武昕伟 张绪锦 张长耀 |
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| 作者单位： | 1. 中国电子科技集团公司第38研究所成像中心,安徽,合肥,230031;解放军炮兵学院四系电子工程教研室,安徽,合肥,230031
2. 中国电子科技集团公司第38研究所成像中心,安徽,合肥,230031 |
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| 摘 要： | 基于分布式卫星的空间构形及相对运动，在地心赤道坐标系内分析了卫星平台与地面目标之间的瞬时距离、相对速度及加速度变化规律，给出一种基于编队构形的分布式小卫星SAR目标回波信号产生的方法，并用距离-多普勒算法进行成像。这为进一步研究基于分布式卫星SAR的动目标检测性能提供了数据基础，有助于编队卫星SAR系统参数设计和选择。
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| 关 键 词： | 分布式卫星 编队构形 轨道根数 波束投影点 合成孔径雷达 回波仿真 |
| 文章编号： | 1004-731X（2007）13-3056-04 |
| 收稿时间： | 2006-05-24 |
| 修稿时间： | 2006-05-242007-05-14 |
Simulation of Echo Signal in Distributed Satellite-borne SAR |
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| WU Xin-wei,ZHANG Xu-jin,ZHANG Chang-yao.Simulation of Echo Signal in Distributed Satellite-borne SAR[J].Journal of System Simulation,2007,19(13):3056-3059,3100. |
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| Authors: | WU Xin-wei ZHANG Xu-jin ZHANG Chang-yao |
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| Abstract: | Based on spatial configuration and relative movement in the distributed satellites, a set of analytical formulas, which calculate instantaneous ranges and relative velocities and accelerations between satellite-borne SAR and targets on the earth, were derived in the Earth-Centered lnertial reference frame. A simulation method of satellite-borne SAR echo signal was proposed based on formation scheme in the distributed satellites, The simulated image was acquired by Range-Doppler imaging algorithm. The echo signal of scenes on the earth with overlaid moving point targets was simulated, in order to study new moving target detection theories for distributed satellite-borne SAR. At the same time, the work contributed to parameters design and performance analysis of the system. |
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| Keywords: | distributed satellites formation configuration orbital elements antenna footprint synthetic aperture radar echo simulation |
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