| 基于SAR回波仿真的BAQ压缩性能研究 |
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| 引用本文： | 张帆,汪丙南,向茂生.基于SAR回波仿真的BAQ压缩性能研究[J].系统仿真技术,2010,6(1):6-10. |
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| 作者姓名： | 张帆 汪丙南 向茂生 |
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| 作者单位： | 1. 中国科学院,电子学研究所微波成像国家级重点实验室,北京,100080
2. 中国科学院,电子学研究所微波成像国家级重点实验室,北京,100080;中科院研究生院,北京,100039 |
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| 基金项目： | 国家"八六三"高技术计划资助项目 |
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| 摘 要： | 分析了合成孔径雷达（Synthetic Aperture Radar，SAR）回波的统计特性，引入了基于SAR分布目标回波仿真的方法，研究了分块自适应量化（Block Adoptive Quantization，BAQ）压缩对SAR回波信号特性的影响。然后介绍了BAQ算法原理，以SAR回波的量化噪声因子、相关系数和SAR图像的辐射分辨率为评估指标。利用郊区和城市两幅机载SAR图像进行试验，分析了不同压缩比对两块地形目标的影响效果，试验表明，在保证成像质量的前提下，郊区地形可以采用比城市地区更高的压缩比。
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| 关 键 词： | 合成孔径雷达 分块自适应量化 SAR回波 信号分析 |
Study on BAQ Compression Performance Based on SAR Echo Simulation |
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| ZHANG Fan,WANG Bingnan,XIANG Maosheng.Study on BAQ Compression Performance Based on SAR Echo Simulation[J].System Simulation Technology,2010,6(1):6-10. |
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| Authors: | ZHANG Fan WANG Bingnan XIANG Maosheng |
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| Affiliation: | ZHANG Fan1,WANG Bingnan1,2,XIANG Maosheng1(1.National Key Laboratory of Microwave Imaging Technology,Institute of Electronics,Chinese Academy of Sciences,Beijing 100080,China,2.The Graduate School of Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | The SAR echo statistics was analyzed,the simulation design that SAR distributed target echo simulation was used to study on the effect of BAQ compression on echo was introduced.BAQ algorithm was analyzed,the SAR echo QNF(quantization noise factor),SAR echo correlation coefficient and SAR image radiation resolution were selected to evaluate the performance of BAQ in different terrain.Two airborne SAR images of suburb and city were used to do experiment,the effect of different compression ratio in different t... |
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| Keywords: | synthetic aperture radar block adaptive quantization synthetic aperture radar echo signal analysis |
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