地球同步轨道星载SAR多普勒特性分析

郑经波; 宋红军; 尚秀芹; 吴勇

doi:10.3724/SP.J.1146.2010.00648

地球同步轨道星载SAR多普勒特性分析

doi: 10.3724/SP.J.1146.2010.00648

计量
- 文章访问数: 3680
- HTML全文浏览量: 147
- PDF下载量: 940
- 被引次数: 0
出版历程
- 收稿日期: 2010-06-21
- 修回日期: 2010-09-13
- 刊出日期: 2011-04-19

Doppler Properties Analysis of GEO Spaceborne SAR

摘要

摘要: 该文推导了适用于任意轨道高度的星载SAR多普勒中心频率和调频率的精确公式，为中高轨SAR多普勒特性的研究提供了有效的方法。基于上述公式，分析了地球同步轨道SAR多普勒中心频率与低轨SAR的联系；研究了星载SAR多普勒调频率随轨道高度的变化和地球自转对同步轨道SAR和低轨SAR调频率的影响；探讨了同步轨道SAR多普勒中心频率和调频率的特征。通过数值仿真验证了推导公式和多普勒特性分析的正确性。
- SAR /
- 地球同步轨道 /
- 多普勒中心频率 /
- 多普勒调频率
Abstract: In this paper, the Doppler centroid frequency and the Doppler frequency rate formulas of spaceborne SAR with arbitrary orbit altitude are derived, which provides an effective method for Doppler properties study of MEO SAR and HEO SAR. Based on these formulas, the relation of Doppler centroid frequency between GEO SAR and LEO SAR is analyzed. The change of spaceborne SAR Doppler frequency rate with the orbit altitude, as well as the influence of earth rotation on the Doppler frequency rate of LEO SAR and that of GEO SAR are studied. The properties of Doppler centroid frequency and Doppler frequency rate of GEO SAR is discussed in detail. The validities of formulas and the analysis of Doppler properties are demonstrated by the numeric simulations.
- SAR /
- Geosynchronous Earth Orbit (GEO) /
- Doppler centroid /
- Doppler frequency rate

HTML全文

参考文献(1)

Heygster G, Dannenberg J, and Notholt J. Topographic mapping of the German tidal flats analyzing SAR images with the waterline method[J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(3): 1019-1030.[2] Kim D J, Moon W M, and Kim Y S. Application of TerraSAR-X data for emergent oil-spill monitoring [J]. IEEE Transactions on Geoscience and Remote Sensing, 2010, 48(2): 852-863.[3] Moon W M, et al.. Radarsat-2 and coastal applications: surface wind, waterline, and intertidal flat roughness [J]. Proceeding of the IEEE, 2010, 98(5): 800-815.[4] Tomiyasu K and Pacelli J L. Synthetic aperture radar imaging from an inclined geosynchronous orbit [J]. IEEE Transactions on Geoscience and Remote Sensing, 1983, GE-21(3): 324-329.[5] Prati C, et al.. Passive geosynchronous SAR system reusing backscattered digital audio broadcasting signals[J]. IEEE Transactions on Geoscience and Remote Sensing, 1998, 36(6): 1973-1976.[6] Hobbs S E and Bruno D. A system trade-off analysis for radar imaging from GEO[C]. Remote Sensing and Photogrammetry Society, Leicester, UK, 2009: 278-283.[7] 周鹏, 皮亦鸣. 一种实用化的星机双基地SAR空间同步方法[J]. 电子与信息学报, 2008, 30 (6): 1312-1315.Zhou Peng and Pi Yi-ming. A practical method for spatial synchronization in spaceborne/airborne hybrid bi-static SAR[J]. Journal of Electronics Information Technology, 2008, 30(6): 1312-1315.[8] 史洪印, 周荫清, 陈杰. 同步轨道星机双基地三通道SAR地面运动目标指示算法[J].电子与信息学报, 2009, 31(8): 1881-1885.Shi Hong-yin, Zhou Yin-qing, and Chen Jie. An algorithm of GEO spaceborne-airborne bistatic three-channel SAR ground moving target indication[J]. Journal of Electronics Information Technology, 2009, 31(8): 1881-1885.[9] Raney R K. Doppler properties of radars in circular orbits [J]. International Journal of Remote Sensing, 1986, 7(9): 1153-1162.[10] Cumming I G and Wong F H. Digital Processing of Synthetic Aperture Radar Data : Algorithms and Implementation [M]. Boston, Artech House, 2005: 125-141.[11] 宋岳鹏, 柳祥乐, 杨汝良. 合成孔径雷达成像中频带分割与子带处理技术研究[J]. 电子与信息学报, 2009, 31(1): 152-155.Song Yue-peng, Liu Xiang-le, and Yang Ru-liang. Study on intersection of spectrum and sub-band processing technique in synthetic aperture radar imaging [J]. Journal of Electronic Information Technology, 2009, 31(1): 152-155.

施引文献

资源附件(0)

访问统计