Extended NCS Based on Method of Series Reversion for Imaging of Highly Squinted SAR
Extended NCS Based on Method of Series Reversion for Imaging of Highly Squinted SAR
复制标题
基于级数反演方法的大斜视SAR成像扩展NCS
DOI:
10.1109/lgrs.2010.2084562
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发表时间:
2011-05
影响因子:
4.8
通讯作者:
Wu Yirong
中科院分区:
文献类型:
--
作者:
Sun Lu;Bao Zheng;Xing Mengdao;Liu Yan;Sun Guangcai;Wu Yirong
In the case of high range resolution and squint angle, current chirp scaling algorithm (CSA) and nonlinear CSA (NCSA) have a finite ability to achieve high-quality images. The problem stems from a range-dependent (i.e., space-variant) cubic- and higher order terms of range frequency, which require sufficient compensation or space-variant filtering, in the phase of the synthetic aperture radar transfer function, and this letter aims at dealing with this problem. First, an inequation is introduced to evaluate the highest order of range frequency terms whose space-variant coefficient has to be taken into account. Then, based on the method of series reversion, this letter proposes the extended NCS which can weaken the range dependence of the considered range frequency terms and achieve accurate range cell migration correction and range compression. Simulation results are presented to validate the proposed method.
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DOI:
10.1017/cbo9781139207249.009
发表时间:
2012
期刊:
--
影响因子:
--
作者:
W. Marsden
通讯作者:
W. Marsden
影响因子:
3.4
作者:
SMITH, AM
通讯作者:
SMITH, AM
影响因子:
4.4
作者:
CAFFORIO, C;PRATI, C;ROCCA, E
通讯作者:
ROCCA, E
影响因子:
8.2
作者:
RANEY, RK;RUNGE, H;WONG, FH
通讯作者:
WONG, FH
影响因子:
8.2
作者:
Davidson, GW;Cumming, I
通讯作者:
Cumming, I