Performance Improvement and System Design of Geo-SAR Using the Yaw Steering

Performance Improvement and System Design of Geo-SAR Using the Yaw Steering
复制标题

使用偏航转向的 Geo-SAR 性能改进和系统设计

DOI:
10.1109/jsen.2017.2735808
复制
发表时间:
2017-10
影响因子:
4.3
通讯作者:
Yuexin Gao
Yuexin Gao
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Jianlai Chen;Guang-Cai Sun;Yong Wang;Mengdao Xing;Yuhong Zhang;Yuexin Gao

文献摘要

参考文献

被引文献

相似文献

在许多情况下,偏航控制可能不能有效地补偿地球同步合成孔径雷达(Geo-SAR)中的大多普勒质心。因此,现有的研究主要集中在二维波束控制方面,而对偏航控制的研究相对较少。然而,在没有任何波束控制的情况下,距离和方位角可能会严重耦合,或者与二维波束控制相耦合。幸运的是,我们发现偏航转向可以克服这个严重的问题,并且可以在改善系统性能方面带来几个好处。本文首先阐述了偏航转向的优点,然后结合偏航转向的优点给出了系统设计的两个方面。偏航控制的三个主要优点是:1)使二维旁瓣接近正交化,提高了成像质量;2)大大减少了合成孔径时间,减少了成像处理的计算负担;3)大大减轻了原始数据的方位变化,简化了成像处理。
The yaw steering may be ineffective to compensate for the large Doppler centroid in geosynchronous SAR (Geo-SAR) in many cases. Therefore, the available studies are concentrated on the 2-D beam-steering, rather than the yaw steering. However, the range and azimuth may be severely coupled without any beam-steering or with the 2-D beam-steering. Fortunately, we found that the yaw steering could overcome this serious problem, and can bring several benefits in terms of the performance improvement of the system. In this paper, we first illustrate the benefits of the yaw steering, and then provide two aspects of the system design with the incorporation of demonstrating the benefits of the yaw steering. The demonstrated three main benefits of the yaw steering are: 1) makes the 2-D side-lobes nearly orthogonal, and improves the imagery quality; 2) largely reduces the synthetic aperture time, and decreases the computation burden of imaging processing; and 3) substantially mitigates the azimuth-variation of raw data, and simplifies the imaging processing.
斜视模式和椭圆轨道地球同步SAR雷达参数设计
DOI: 10.1109/jstars.2016.2570231
发表时间: 2016-06
期刊: IEEE Jstars
影响因子: --
作者:
Zegang Ding;Wei Yin;Tao Zeng;Teng Long
通讯作者: Teng Long
DOI: 10.1049/el.2011.1892
发表时间: 2012-01
影响因子: 1.1
作者:
M. Bao;M. Xing;Yongkang Li
通讯作者: M. Bao;M. Xing;Yongkang Li
DOI: 10.1109/lgrs.2005.844591
发表时间: 2005-04-01
影响因子: 4.8
作者:
Fiedler, H;Boerner, E;Krieger, G
通讯作者: Krieger, G
倾斜地球同步轨道SAR差分干涉测量中的最佳3D变形测量
DOI: 10.1007/s11432-016-9083-4
发表时间: 2017-06-01
影响因子: 8.8
作者:
Hu, Cheng;Li, Yuanhao;Cui, Chang
通讯作者: Cui, Chang
DOI: 10.1109/tgrs.2013.2296357
发表时间: 2014-10-01
影响因子: 8.2
作者:
Ruiz-Rodon, Josep;Broquetas, Antoni;Rocca, Fabio
通讯作者: Rocca, Fabio