| 地球同步轨道圆迹SAR研究 |
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| 引用本文： | 洪文,林赟,谭维贤,王彦平,向茂生.地球同步轨道圆迹SAR研究[J].雷达学报,2015,4(3):241-253. |
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| 作者姓名： | 洪文 林赟 谭维贤 王彦平 向茂生 |
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| 作者单位： | (中国科学院电子学研究所 北京 100190) |
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| 基金项目： | 探索研究项目和国家自然科学基金(61431018, 61201404)资助课题 |
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| 摘 要： | 该文介绍了地球同步轨道圆迹合成孔径雷达(Geosynchronous Circular SAR, Geo-CSAR)的概念，通过设计同步轨道的轨道参数，可以形成近圆的卫星相对地球轨迹，使SAR载荷的凝视成像模式成为可能，实现对地的大面积定点连续观测以及真3维信息获取；研究分析了Geo-CSAR的成像能力，指出其在瞬时覆盖度、连续观测范围及3维精确定位方面，具有现有低轨星载SAR无法比拟的优势，是实现全球不间断覆盖的有效途径之一，在军事侦察、灾害监测方面具有重要的应用前景。
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| 关 键 词： | 对地观测 地球同步轨道 合成孔径雷达 圆迹SAR 大面积定点连续观测 3维成像 |
| 收稿时间： | 2015-05-22 |
Study on Geosynchronous Circular SAR |
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| Hong Wen,Lin Yun,Tan Wei-xian,Wang Yan-ping,Xiang Mao-sheng.Study on Geosynchronous Circular SAR[J].Journal of Radars,2015,4(3):241-253. |
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| Authors: | Hong Wen Lin Yun Tan Wei-xian Wang Yan-ping Xiang Mao-sheng |
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| Affiliation: | (Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) |
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| Abstract: | The concept of Geosynchronous Circular SAR (Geo-CSAR) is introduced in this paper. With the design of the geosynchronous orbit parameters, a near-circular satellite sub-track could be formed to enable the staring imaging mode, which supports the advanced applications for wide-field and 3-D information acquisition under long-term consistent observation. This paper also analyzes Geo-CSAR's imaging formation capabilities, and concludes its attractive advantages over low-earth orbit spaceborne SAR in terms of instantaneous coverage, consistent observing area, 3-D positioning accuracy and etc.. Encouraging expectations for Geo-CSAR thus could be positively predicted in military investigation and disaster monitoring management applications. |
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