ID 原文 译文
23875 该方法首先计算 GNSS 卫星反射信号和直射信号的强度比，即反射信号相关功率和直射信号相关功率的比值； Firstly, the method needs to calculate the intensity ratio of GNSS satellite reflected signal and direct signal, which is the ratio of the reflected signal correlation power and the direct signal correlation power.
23876 然后根据海冰厚度的经验模型得到海冰厚度的信息。 Then the sea ice thickness is obtained based on the empirical model.
23877 为了验证该方法的有效性，在辽宁鲅鱼圈区进行的实验中对 GNSS 卫星反射信号进行了长期观测，结果表明，GNSS 卫星反射信号反演的海冰厚度值为 10~20 cm，与同比观测值之间具有很好的一致性。 Preliminary analysis of the GNSS reflected signal collected during the sea ice experiment can obtain sea ice thickness which is 10~20 cm and shows good agreement between the GNSS-R sea ice thickness.
23878 森林区域林下地形及树高的反演是极化干涉雷达的一个重要应用。 The inversion of topography and tree height in forest area is one of the most important applications in the Polarimetric SAR Interferometry (PolInSAR).
23879 该文首先对极化干涉 SAR 数据的相干区域进行建模及运用最优正规矩阵近似干涉互相关矩阵，得到白化正规干涉互相关矩阵。 In this paper, the coherent region of the PolInSAR data is modeled and the best normal matrix is used to approximate the cross correlation matrix, further, the whitened interferometric cross-correlation matrix is obtained.
23880 白化正规干涉互相关矩阵的相干区域为一条直线，任意求得两个不同极化状态下的相干系数进行直线拟合，完成地表的估计，再结合体散射去相干与树高之间的关系，运用查表方法完成树高的估计。 The coherence region of the whitened interferometric cross-correlation matrix is a straight line. Two arbitrary coherences obtained under two different polarization states can be applied to fitting a straight line. Based on the fitting line, the topographical phase can be estimated successfully. Referring to the relationship between the volume scattering and the tree height, look-up table method is used to search the correct tree height.
23881 该方法回避了传统方法中求解所有极化状态下的相干系数估计及相干区域边缘提取的步骤，在简化参数反演提升估计效率的同时获得正确地表与树高估计，最后运用仿真数据完成算法有效性与可靠性的验证。 The proposed method can avoid the complex steps of the traditional method, which needs to solve all the coherences under different polarization states to obtain the edge of the coherent region. The proposed method simplifies the inversion procedure and improves the efficiency of inversion, meanwhile, achieves the correct topography as well as the tree height. Finally, the simulation data are applied to validating the validity and reliability of the proposed method.
23882 为有效提高强杂波及目标复杂运动特性条件下的雷达动目标探测能力，该文结合时频分布(TFD)类动目标检测和稀疏表示方法的优势，建立了短时稀疏 TFD(ST-STFD)原理框架，提出短时稀疏傅里叶变换(ST-SFT)和短时稀疏分数阶傅里叶变换(ST-SFRFT)雷达动目标检测方法，并应用于海上目标微动特征提取及检测中。 In order to effectively improve radar detection ability of moving target under the conditions of strong clutter and complex motion characteristics, the principle framework of Short-Time sparse Time-Frequency Distribution (ST-TFD) is established combing the advantages of TFD-based moving target detection and sparse representation. Then, Short-Time Sparse Fourier Transform (ST-SFT) and Short-Time Sparse FRactional Fourier transform (ST-SFRFT)-based radar moving target detection methods are proposed and applied to micro-Doppler signature extraction and detection of marine target.
23883 实测雷达数据验证表明，该方法在时间-稀疏域能够实现时变信号的高分辨低复杂度时频表示，具有运算效率高、时频分辨好、抗杂波等优点，为进一步提升雷达杂波抑制和动目标检测能力提供了新的思路和途径。 It is verified by real radar data that the proposed methods can achieve high-resolution and low complexity TFD of time-varying signal in time-sparse domain, and has the advantages of high efficiency, good time-frequency resolution, anti-clutter, and so on. It can be expected that the proposed methods can provide a novel solution for radar clutter suppression and moving target detection.
23884 分割运动手部时，为了不依赖不合理的假设和解决手脸遮挡问题，该文提出一种基于肤色、灰度、深度和运动线索的分割方法。 For moving hand segmentation, in order not to use unreasonable assumptions and to solve the hand-face occlusion, a segmentation method based on skin color, grayscale, depth and motion cues is proposed.