An improved CS algorithm for geosynchronous SAR

被引：0
|
作者：
Li C.-P. [1 ]
Zhang H.-T. [1 ]
Tan X.-M. [1 ]
机构：
[1] China Academy of Space Technology Xi'an
来源：
Yuhang Xuebao/Journal of Astronautics | 2011年 / 32卷 / 01期
关键词：
Bend compensation; Geosynchronous orbit; Modification CS algorithm; SAR; Yaw traction;
D O I：
10.3873/j.issn.1000-1328.2011.01.028
中图分类号：
学科分类号：
摘要：
Geosynchronous SAR has its own advantages which ordinary low orbit SAR doesn't have. However, the motion trajectory of "8" shape brings imaging difficult, and the imaging algorithms which are based on line motion also lose effectiveness. With regard to this issue, combining with yaw traction control and bend compensation, improved CS algorithm is proposed. In this paper, the geosynchronous SAR echo model, the yaw traction, the equivalent squint angle, and the formula of the improved CS algorithm are studied respectively. In order to solve the imaging problem, a large synthetic aperture is divided into small ones according to the requirement for resolution ratio. Simulations prove imaging properties of the algorithm.
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页码：179 / 186
页数：7
相关论文
共 10 条
  • [1] Tomiyasu K., Pacelli J.L., Synthetic aperture radar imaging from an inclined geosynchronous orbit, IEEE Transactions on Geoscience and Remote Sensing, 21, pp. 324-328, (1983)
  • [2] Murphy L.M., Synthetic aperture radar imaging from geosynchronous orbit-concept, feasibility and applications, The 38th Congress of The International Astronautical Federation, (1987)
  • [3] Madsen S.N., Edelstein W.N., DiDomenico L., A geosynchronous synthetic aperture radar for tectonic mapping, disaster management and measurements of vegetation and soil moisture, IEEE Symposium on Geoscience and Remote Sensing, 1, pp. 447-449, (2001)
  • [4] Davide B., Hobbs S.E., Giuseppe O., Geosynchronous synthetic aperture radar: Concept design, properties and possible applications, Acta Astronautica, 59, 1, pp. 149-156, (2006)
  • [5] pp. 160-166, (2001)
  • [6] Chen J.-L., Xu M., Zhu J., Yaw steering and accuracy requirement of distribution SAR satellites, Spacecraft Engineering, 17, 1, pp. 143-145, (2008)
  • [7] Runge H., Benefits of antenna yaw steering for SAR, IGARSS'91, pp. 257-261, (1991)
  • [8] Raney R.K., Doppler properties of radar in circular orbit, International Journal of Remote Sensing, pp. 1153-1162, (1986)
  • [9] Liu G.-P., Study of ultra wind-band SAR efficiency imaging algorithm, (2003)
  • [10] Yuan Y., Yuan H., Lei L., Et al., An imaging method of GEO Spaceborne-Airborne bistatic SAR, Radar Science and Technology, 5, 2, pp. 128-132, (2007)
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