ID 原文 译文
24985 该 FSS 表现出良好的机械柔性，并在 0 ～ 60°宽角度入射波，以及不同极化条件下，表现出稳定的频率选择特性。 The FSS exhibits good mechanical flexibility, and exhibits stable frequency selection characteristics under incident waves with a wide angle of 0 ～ 60° and different polarization conditions．
24986 这一宽角度与极化稳定性对于柔性 FSS 在共形覆盖条件下应用不可或缺。 This wide angle and polarization stability are indispensable in the application of flexible FSS under conformal coverage conditions．
24987 相较于传统 PCB 工艺，本文提出的基于增材工艺带通 FSS不但成本低、加工效率高，还具有柔性共形、极化与宽角度稳定等优势，有望满足柔性覆盖/共形电磁兼容与防护的需求。 Compared with the traditional PCB process, the band-pass FSS based on additive process proposed not only has lowcost and high processing efficiency, but also has the advantages of flexible conformal, polarization and wide-angle stability. It is expected to meet the need for flexible coverage/conformal electromagnetic compatibility and protection．
24988 曲率滤波算法通过构造滤波算子快速优化变分模型，但全变分曲率滤波及高斯曲率滤波易致去噪过平滑且椒盐噪声去除较差。 The curvature filtering algorithm optimizes the variational model quickly by constructing a filter operator, but the total variational curvature filtering and Gaussian curvature filtering are easy to cause over smooth denoising with poor salt and pepper noise removal．
24989 提出了基于图像中值灰度相似度函数加权曲率滤波算法，其中，中值灰度相似度函数方差取决于小波变换最高频子带系数，能较好防止图像过平滑，且提高椒盐噪声去除能力; A weighted curvature filtering algorithm based on image median gray similarity function is proposed, in which the variance of the median gray similarity function depends on the highest frequency subband coefficient of wavelet transform, which can prevent the image from being too smooth and improve the ability of removing salt and pepper noise．
24990 因此，采用中值灰度相似度函数分别对局部高斯曲率与局部全变分曲率投影算子加权，并分别迭代局部加权高斯曲率投影算子与局部加权全变分曲率投影算子，直至输出图像梯度总能量满足停止条件。 Therefore, the local Gaussian curvature projection operator and the local total variational curvature projection operator are weighted by the median gray level similarity function, and the local weighted Gaussian curvature projection operator and the local weighted total variational curvature projection operator are iterated respectively until the total energy of the output image gradient meets the stop condition．
24991 实验表明，基于图像中值灰度相似度函数加权全变分曲率滤波与加权高斯曲率滤波比传统全变分曲率滤波和高斯曲率滤波去噪效果更好。 Experimental results show that the denoising effect of weighted total variation curvature filter and weighted Gaussian curvature filter based on image median gray similarity function is better than the traditional total variation curvature filter and Gaussian curvature filter．
24992 研究多天线窃听者场景基于混合精度模数转换器(Analog-to-Digital Converter，ADC)大规模多输入多输出(Multiple Input Multiple Output，MIMO)中继系统，中继将接收到的信号放大转发，通过在基站采用最大比合并接收信号，推导出合法用户与窃听者的频谱效率表达式，最终得出系统保密频谱效率表达式。 The multi-antenna eavesdropper scenario based on a mixed-precision analog-to-digital converter massive MI-MO (Multiple Input Multiple Output) relay system is studied, where the relay amplifies and forwards the received signal. Using maximum ratio to combine the received signals at the base station, the expressions of spectral efficiency of legitimate users and eavesdroppers are derived, and the expression of secrecy spectral efficiency of the system is obtained．
24993 根据能量效率定义建立功耗模型，推导保密能量效率表达式，并分析保密频谱效率和保密能量效率之间的平衡关系，进而揭示基站天线数、ADC量化位数等参数对物理层安全性能的影响。 Based on the definition of energy efficiency, a power consumption model is established． The expression of secrecy energy efficiency is derived. And the tradeoff between the secrecy spectral efficiency and the secrecy energy efficiency is analyzed. It further reveals the influence of parameters such as the number of base station antennas and the number of ADC (Analog-to-Digital Converter) quantization bits on the physical layer security performance.
24994 仿真结果表明，随着窃听者天线数增多，窃听能量增强，保密频谱效率会减小; The simulation results show that as the number of eavesdropper antennas increases and eavesdropping energy increases, the secrecy spectral efficiency will decrease.