ID 原文 译文
12804 文中针对SAR舰船目 标切片图像,提出ー种基于精细分割的SAR图像舰船目标几何结构特征提取方法。 A new method for geometric structure feature of ship targets in SAR images based on fine segmentation is proposed.
12805 首先,采用基于Radon 变换的分割方法将舰船目标和成像干扰区域进行分离，对分离出的舰船目标切片进行阈值分割处理，并利用形态学手段处理分割图像，减小旁瓣影响，准确提取目标主区域。 Firstly, the Radon transform is adopted to separate ship targets with the “ghosting" or the))spider". The piimary area of ship targets is obtaned by the image threshold segmentation method, image processing based on the morphological method is adopted to inhibit the side lobe.
12806 然后基于椭圆形状约束进行目标区域的细化分割,解决分割区域“毛刺”现象和区域断裂现象，得到舰船目标的最佳图像分割区域。 Secondly, the target zone is refned based on the method of elliptical shape constraint, the “burr" phenomenon and the regonal fracture phenomenon are well solved, and then the best image segmentation area for ship targets is acquired.
12807 最后，通过逼近目标区域获得其对应的最小外接矩形(minimum enclosmg rectangle, MER)，进而实现目标区域几何结构特征的精确提取。 Finally, the minimum circumscribed rectangle of target zone is obtaned based on the successve approximation method to extract the geometric structure feature accurately.
12808 通过对获取的高分三号卫星SAR图像数据进行仿真实验!证明了本文方法提取舰船目标几何结构特征的高准确性和强稳定性，对海上舰船目标的识别与分类具有重要意义。 The experiments on the obtained GF-3 satellte SAR images demonstrate that our method proposed in this paper to extract the gec- metrc structure feature of ship targets with high accuracy and strong stability, and it is significant for the identification and classification of ship targets at sea.
12809 非线性目标的入射功率一散射谐波功率曲线(后文简称为谐波散射特性)对增强非线性探测系统的鲁棒性和后续的目标分类识别具有重大意义。 The incident power and scattered harmonc power relation of nonlmear targets (hereinafter to be referred as harmonc scatterng characteristics) demonstrates significant importance in enhancng the robustness of non-linear detection systems and subsequent target identification and recognition.
12810 本文研究了非线性目标谐波散射特性的建模方法和对应 的参数求解方法,文章通过建立等效电路，导出了非线性伏安特性曲线与散射参数的关系模型，并提出一种基于优化的递进求精解法来提高模型参数的求解效率；以齐纳二极管的实测基波数据作为建模求解的测试示例，结果表明建模参数的仿真谐波曲线与测量的谐波曲线在测量功率段均符合较好,故本文建模方法可为后续更多非线性目标(如PIN管、三极管等)谐波散射特性的获取提供有益指导。 In this paper, the modelng method of the nonlnear target harmonic scattering characteristics and the corresponding parameter extraction are studied, By establishing an equivalent circuit, this paper derives the relation between the non i inear volt-ampere characteristic curve and the scatter ing parameters and proposes a progressive optimization-based solution to improve the effciency of parameter extraction, Zener diode fundamental wave data is used to illustrate the modeling process, and simulated harmonc scattering characteristics based on the modeled parameters show the consstency wth harmonc measurement.Therefore, the proposed method could be a benefcal reference for obtanng harmonc scatterng characterstcs of other noniinear elements (such as PIN tubes, triodes, etc,),
12811 实际目标的雷达特性是多维空间中的函数，但雷达观测只能获得多维特性在低维空间中的切片或投影，深入分析有限的雷达观测数据蕴含的目标特性信息，对提升目标检测识别性能有重要意义。 The radar signature of complex target is a muti-dimensional function with many variables. The measurement from a special radar only obtains a slice or a projection of the multi-dimensional function in a lower dimensional space. Fully exploring the target sgnature from the limted radar measurement is helpful in target detection and recognition.
12812 从三维散射率分布函数出发，推导了不同维度雷达图像与散射率分布函数积分投影的傅里叶变换对关系，并通过分析该关系所隐含的近似条件，指出实际目标散射特性的复杂性，得出了多维空间中形式化的散射模型。 Based on the three dimensional scattering distribution function (SDF), the Fourier transform relation between the radar image and the mtegral projection of the SDF is deduced; the implicit simplification in the SDF is analyzed based on the complex scattering phenomenon of real targets; and the formalzed muti-dimensional scattering function is derived.
12813 基于散射中心和雷达图像从不同的角度对多维散射模型的低维映射进行分析，给出了若干目标特性分析实例，包括棱形结构的相位逆转现象、多次散射的极化相位关系、空间目标腔体结构的色散现象、柔性结构的图像散焦效应等。 The low dimensional representaton of ths multi-dimensonal scattering function is analyzed from the aspects of scatterng center model and radar image, and several examples are presented, such as the phase reversal of edge scatterers, the polarzaton scatterng matr x of multple scatterng, the scatterng dsperson of cavtes n spatal targets, and the mage defocus of flexble structures, and so on.