Effects of Anisotropic Ionospheric Irregularities on Space-Borne SAR Imaging
Effects of Anisotropic Ionospheric Irregularities on Space-Borne SAR Imaging
复制标题
各向异性电离层不规则性对星载SAR成像的影响
DOI:
10.1109/tap.2014.2333055
复制
发表时间:
2014-06
影响因子:
5.7
通讯作者:
Cheng Wang, Min Zhang, Zheng-Wen Xu, Chun Chen, D
中科院分区:
文献类型:
--
作者:
Cheng Wang, Min Zhang, Zheng-Wen Xu, Chun Chen, D
This paper discusses the degradation of space-borne synthetic aperture radar (SAR) imaging due to anisotropic ionospheric irregularities. In the case of the oblique incidence and anisotropy of ionospheric irregularities, two types of potential ionospheric effects on SAR imaging are derived from an improved transverse correlation function. First, in the range direction, the image shift due to both multiple scattering and dispersion of irregularities is considered. In addition, pulse broadening due to multiple scattering of the irregularities is also studied, which leads to degradation of the range resolution. Second, in the azimuthal direction, the decorrelation distance is obtained by the second moment of the generalized ambiguity function. Using the range Doppler algorithm (RDA), several degraded point target responses due to the ionospheric irregularities are evaluated. The simulation results show that the adverse effects of ionospheric irregularities on SAR imaging are worsened at lower frequencies and stronger ionospheric fluctuations.
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影响因子:
8.2
作者:
F. Meyer
通讯作者:
F. Meyer
影响因子:
8.2
作者:
Lianlin Li;Fang Li
通讯作者:
Lianlin Li;Fang Li
影响因子:
1.6
作者:
R. Dana;L. A. Wittwer
通讯作者:
R. Dana;L. A. Wittwer
影响因子:
1.6
作者:
D. Knepp;L. Nickisch
通讯作者:
D. Knepp;L. Nickisch
DOI:
10.1088/0959-7174/13/1/304
发表时间:
2003-01
期刊:
Waves in Random Media
影响因子:
--
作者:
Zhengwen Xu;Jian Wu;Zhensen Wu
通讯作者:
Zhengwen Xu;Jian Wu;Zhensen Wu