ID 原文 译文
13534 并且, 副模式的时延展宽同样会影响信号校正效果.通过分析可知, 带有时延展宽的副模式的相对衰减越小, 对校正效果影响越大, 并通过与传统导频估计修正的方法对比得出, 一体化方法对多模式传播的信号校正效果更好。 Moreover, the time delay broadening of the sub-mode also affect the signal correction effect.The analysis shows that the smaller the relative attenuation of the sub-mode with time delay broadening, the greater the effect on the signal correction. Compared with the traditional pilot estimation method, the integrated method has a better effect on the signal correction of multimode propagation.
13535 该研究为后续探索短波探通一体化技术提供了理论和实践依据。 The research of this paper provides theoretical and practical basis for the follow-up exploration in the integrated technology of HF communication and channel detection.
13536 基于多开口谐振环结构, 提出一种双频宽带左手材料。 Based on the multi-split resonant ring structure, a dual band broadband left-handed material is proposed.
13537 结构由正方形谐振环与工字型负载线组合而成, 具有频带宽、频率可调与易于加工的特点。 The structure is composed of a rectangular resonant ring and inverted H-shaped load line, and it has a wide frequency band, adjustable frequency and is easy processed.
13538 通过软件仿真与样品测试提取等效介质参数, 结果表明该结构左手频带分别位于7.8～8.2GHz和8.4～13.4GHz, 左手带宽共计5.4GHz。 The parameters are extracted by software simulation and physical test, and the results show that the left-handed bands of the structure are located at 7.8—8.2GHz and 8.4—13.4GHz respectively, and the total bandwidth is 5.4GHz.
13539 相较于传统结构, 该结构带宽更宽且在一定范围可对左手频带进行调节。 Compared with the traditional structure, this structure has wider bandwidth and can adjust the left-hand band in a certain range.
13540 X波段的高分辨率极化干涉合成孔径雷达 (synthetic aperture radar, SAR) 图像包含较强的斑点噪声, 不利于地物分类等应用。 High-resolution X-band polarimetric interferometric synthetic aperture radar (PolInSAR) images often contain strong speckle noise, which can be an obstacle for applications like land cover classification.
13541 针对这一问题, 先使用Nonlocal滤波进行预处理, 然后提取图像的极化特征和干涉特征, 再使用支持向量机 (support vector machine, SVM) 和AdaBoost分类器对极化和干涉特征矢量进行分类。 To overcome this problem, we apply the Nonlocal filter to the images first.After that, polarimetric and interferometric features are extracted and then used by the support vector machine (SVM) and the AdaBoost classifier for classification.
13542 利用N-SAR系统于渭南市采集的极化干涉SAR数据进行验证, 该数据共包含10类地物, 并有足够的ground truth用来进行分类器的训练和测试。 For demonstrating the effectiveness of the presented method, we test it on an PolInSAR image of Weinan collected by N-SAR.This area contains 10cover types and there is enough ground truth for training and validation.
13543 实验结果表明, AdaBoost分类器能对多类地物取得较好的分类效果, 且干涉信息的加入能带来一定改善。 Classification result shows that the AdaBoost classifier achieves good performance for various cover types, and that interferometric information can improve the accuracy.