| 匀速运动目标的聚束SAR成像特征分析 |
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| 引用本文： | 毛新华,丁岚,朱岱寅,朱兆达.匀速运动目标的聚束SAR成像特征分析[J].数据采集与处理,2010,25(3). |
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| 作者姓名： | 毛新华 丁岚 朱岱寅 朱兆达 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院,南京,210016 |
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| 基金项目： | 中国博士后基金，江苏省博士后科研计划 |
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| 摘 要： | 运动目标的合成孔径雷达(SAR)成像特征是SAR/GMTI系统中进行运动目标检测和成像的基础.以往研究都是在两维可分离条带SAR成像算法条件下讨论目标运动对成像的影响,而很少考虑高分辨聚束SAR成像算法处理后运动目标的成像特征.本文推导了两种典型高分辨聚束SAR成像算法(RMA和PFA)处理后的动目标误差谱表达式,并在此基础上从目标几何定位误差、残留距离徙动和散焦等方面给出了完整的聚束SAR运动目标响应特征分析.最后通过仿真数据处理验证了分析结果.
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| 关 键 词： | 合成孔径雷达 运动目标成像 距离徙动算法 极坐标格式算法 |
Analysis on Signatures of Moving Target on Spotlight SAR Image |
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| Mao Xinhua,Ding Lan,Zhu Daiyin,Zhu Zhaoda.Analysis on Signatures of Moving Target on Spotlight SAR Image[J].Journal of Data Acquisition & Processing,2010,25(3). |
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| Authors: | Mao Xinhua Ding Lan Zhu Daiyin Zhu Zhaoda |
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| Affiliation: | Mao Xinhua,Ding Lan,Zhu Daiyin,Zhu Zhaoda(College of Information Science , Technology,Nanjing University of Aeronautics , Astronautics,Nanjing,210016,China) |
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| Abstract: | Synthetic aperture radar(SAR) signatures of moving target are the basis of ground moving target detection and imaging in SAR/GMTI system.However,previous studies mainly based on the 2-D separable stripmap SAR processing,and little work has been done to investigate the signatures of moving target after the application of a particular fine resolution spotlight SAR image formation algorithm.This paper derives the image spectrum of the moving target after two representative fine resolution SAR image formation a... |
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| Keywords: | synthetic aperture radar moving target imaging range migration algorithm polar format algorithm |
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