作者
Yufeng Wu, Guang-Cai Sun, Jun Yang, Jianlai Chen, Mengdao Xing
发表日期
2014/7/13
研讨会论文
2014 IEEE Geoscience and Remote Sensing Symposium
页码范围
680-683
出版商
IEEE
简介
Due to the effects of the earth's rotation and the satellite's elliptical orbit, the Doppler centroid varies along the orbit in geosynchronous earth orbit synthetic aperture radar (GEO SAR). With an ultrahigh orbit height, the beam may illuminate outside the earth surface with a rotation angle large than 9 degrees. Therefore, the usual attitude steering methods to minimize the Doppler centroid in low earth orbit SAR (LEO SAR) may not be suitable for GEO SAR. Considering the above two effects of GEO SAR and the beam illuminating restriction, a beam determination method to minimize Doppler centroid in GEO SAR is proposed in this paper. Guaranteeing that the beam not illuminate outside the earth surface, the proposed method can drastically decrease the Doppler centroid and the equivalent squint angle.
引用总数
201620172018201911
学术搜索中的文章
Y Wu, GC Sun, J Yang, J Chen, M Xing - 2014 IEEE Geoscience and Remote Sensing …, 2014