ID 原文 译文
8704 考虑了各介质区域内部的面元耦合以及区域之间和交界处面元的耦合作用,对地海交界分区域复合粗糙面的散射问题,提出了一种基于分区域面元的迭代物理光学法,采用快速远场近似(fast far field approximation,FaFFA)与局部耦合技术加速其迭代过程。 Considered within the area of the media in front of the coupling and the area and the surface of the junction between yuan, the coupling effects of the sea border points regional composite rough surface scattering problem, this paper proposes a iterative physical optics method based on surface areas, using the fast far field approximation (the fast far field approximation, FaFFA) and local coupling technology accelerate the iteration process.
8705 对比了陆地粗糙面、海面和地海交界分区域复合粗糙面的电磁散射特性,计算了分区域复合粗糙面的散射系数,并讨论了极化方式、入射角、边界形状、陆地粗糙面的均方根高度、相关长度和近海海面的风速对地海交界分区域复合粗糙面电磁散射特性的影响。 Compared the rough surface, the surface of the land and sea border points to regional composite electromagnetic scattering characteristics of rough surface are calculated by composite areas rough surface scattering coefficient, and discussed the polarization modes, incidence Angle, boundary shape, root mean square land rough surface height, and correlation length of the offshore wind speed over the ground sea border points and the influence of the regional composite electromagnetic scattering characteristics of rough surface.
8706 基于迭代物理光学法所获取的分区域复合粗糙面总散射场,采用正侧视条带式成像模式,选用距离多普勒算法对不同特点的地海分区域复合粗糙面进行合成孔径雷达(synthetic aperture radar,SAR)成像,并讨论了陆地粗糙面与海面各自的相对介电常数对SAR成像的影响。 Based on iterative physical optics method to obtain the composite rough surface areas the total scattering field, the positive side strip type imaging mode, selects the range doppler algorithm on different characteristics of earthsea composite rough surface areas for synthetic aperture radar (synthetic aperture radar, SAR) imaging, and discusses the rough land surface and the surface of the respective relative dielectric constant effects on SAR imaging.
8707 该研究包括了地海交界环境的建模、电磁散射特性的求解及其SAR成像,由仿真结果得到了地海交界分区域复合粗糙面的SAR像特点,对反演地海交界环境的电磁特性以及遥感、探测具有借鉴意义。 The study included the sea border environment modeling, solution of the electromagnetic scattering characteristics and its SAR imaging, to the sea border points are obtained by the simulation results, the SAR regional composite rough surface as characteristic, the electromagnetic characteristics of inversion to sea border between the environment and the significance of reference to the remote sensing, detection.
8708 基于四元数小波变换和稀疏表示理论,提出了一种图像融合方法,该方法弥补了传统的多尺度理论分析和稀疏表示理论在融合过程中的不足。 Quaternion based wavelet transform and sparse representation theory, this paper proposes a image fusion method, this method makes up for the traditional theory of multi-scale analysis and the theory of sparse representation in the fusion process.
8709 所提方法分为3步:首先,利用四元数小波变换分解所给的源图像,得到各个尺度下的高通子带和低通子带; Proposed method is divided into three steps: first, using quaternion decomposition of the wavelet transform to the source image, get various scales high-pass subband and low-pass subband;
8710 其次,对高通子带选用系数绝对值最大和低通子带采用稀疏表示的规则进行融合,获得融合系数; Second, chosen in high-pass subband coefficient of absolute value maximum and low-pass subband fusion with the rules of the sparse representation, and get the fusion coefficient;
8711 最后,对融合系数进行四元数小波逆变换得到融合图像。 Finally, the fusion coefficients are quaternion wavelet inverse transformation for fusion image.
8712 此外,对所提融合方法进行了理论分析。 In addition, the proposed fusion method are analyzed in theory.
8713 在数值实验中用6组测试图像测试所提方法性能,并将融合结果与稀疏表示、离散小波变换、对偶数复小波变换、四元数小波变换等融合方法所得结果进行了主观与客观的比较。 In numerical experiments with six groups of test image test performance, the proposed method and the fusion results with sparse representation, discrete wavelet transform, for even after wavelet transform, the quaternion wavelet transform fusion methods, such as the results are compared and the subjective and objective.