An Accelerated Algorithm Based on GO-PO/PTD and CWMFSM for EM Scattering From the Ship Over a Sea Surface and SAR Image Formation
An Accelerated Algorithm Based on GO-PO/PTD and CWMFSM for EM Scattering From the Ship Over a Sea Surface and SAR Image Formation
复制标题
基于GO-PO/PTD和CWMFSM的海面船舶电磁散射及SAR成像加速算法
DOI：
10.1109/tap.2019.2963241
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发表时间：
2020-01
影响因子：
5.7
通讯作者：
Meng Xiao
中科院分区：
文献类型：
--
作者：
Dong Chun-Lei;Guo Li-Xin;Meng Xiao
本文提出了一种加速射线跟踪算法，以提高计算效率的三维船舶目标的复合散射位于一个随机的海面。通过采用一种新的邻域搜索技术、一种新的0-1变换规则和八叉树节点的排列，加速了光线跟踪。它可以降低代码复杂度，提高计算效率。结合该技术，进一步建立了基于几何光学、物理光学和物理衍射理论（GO-PO/PTD）和毛细波修正小面散射模型（CWMFSM）的加速算法。这对宽带合成孔径雷达（SAR）散射回波的模拟具有重要意义，使SAR成像算法成为可能。通过与基于FEKO的多层快速多极子方法（MLFMM）的仿真结果比较，验证了该方法的有效性。通过仿真图像与实测图像的对比，进一步验证了该方法的准确性。
This article proposes an accelerated ray-tracing algorithm to improve the computational efficiency of composite scattering from the 3-D ship target located on a random sea surface. The ray tracing is accelerated by using a new neighbor search technique, with a new 0–1 transformation rule and arrangement of octree nodes. It can reduce the code complexity and improve the computational efficiency. Combined with this technique, an accelerated algorithm based on the geometrical optics, physical optics with physical theory of diffraction (GO-PO/PTD) and capillary wave modification facet scattering model (CWMFSM) is further established. This is meaningful for the simulation of scattered echoes for wideband synthetic aperture radar (SAR), enabling SAR images to be formed using an imaging algorithm. The effectiveness of the proposed method was verified by comparing the simulation results with those produced by the FEKO-based multilevel fast multipole method (MLFMM). Further confirmation of its accuracy was obtained by comparing the simulated images with the measured ship image.
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影响因子：
5.7
作者：
G. Karagounis;D. De Zutter;D. Vande Ginste
通讯作者：
G. Karagounis;D. De Zutter;D. Vande Ginste
影响因子：
4.2
作者：
Z. Zubac;D. De Zutter;D. Vande Ginste
通讯作者：
Z. Zubac;D. De Zutter;D. Vande Ginste
GO/PO 和 PTD 具有虚拟发散因子，可快速分析凹面复杂目标的散射
影响因子：
5.7
作者：
W. F. Huang;Z. Q. Zhao;R. Zhao;J. Ye. Wang;Z. P. Nie
通讯作者：
Z. P. Nie
DOI：
10.1109/apusncursinrsm.2018.8608605
发表时间：
2018-07
期刊：
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
影响因子：
--
作者：
Xin-Zhuo Li;Y. Jiao;Wangqiang Jiang;Min Zhang
通讯作者：
Xin-Zhuo Li;Y. Jiao;Wangqiang Jiang;Min Zhang
影响因子：
4.2
作者：
M. Ilić;B. Notaroš
通讯作者：
M. Ilić;B. Notaroš