ID 原文 译文
14505 网络基于3×3卷积核,在网络中加入融合空间金字塔注意力的点积残差块,引入Dropblock正则化,并提出了低层特征掩膜化。 The network is based on 3×3 convolution kernel，and a dot product residual block which fuses the attention of spatial pyramid is added to the network．Dropblock regularization is introduced，and low－level feature masking is proposed．
14506 该模型低层特征具备高层特征的语义信息,而且参数量较少,结构简单有效。 The low－level features of the model havesemantic information of high－level features with few parameters and simple and effective structure．
14507 训练时,使用提出的基于角度距离损失函数监督神经网络学习,提高了网络的类间特征分离和类内特征聚类的特征判别能力。 During training，the proposed loss function based on angle distance is used to supervise the learning of neural network，which improves the feature discrimination ability of feature separation between classes and featureclustering within classes．
14508 实验结果表明,该方法在CK+和FER2013数据集上识别准确率分别达到了97.88%和72.81%,具有较强竞争力。 Experimental results show that the recognition accuracy of this method on CK+and FEＲ2013 data sets reaches 97．88% and 72．81%，respectively，and it has strong competitiveness．
14509 此外,消融实验表明所提出的改进方法可提高表情识别率,进一步验证了其有效性。 In addition，ablation experiments show that the improved method can improve the expression recognition rate，which further verifies its effectiveness．
14510 在分析低轨卫星通信系统中不同链路所需波束类型的基础上,将所需波束类型归纳为宽波束和可切换点波束两大类,进而提出了用一副相控阵天线来实现这两种波束的方式。 According to the analysis of the beam types required by different links in low Earth orbit( LEO)satellite communication systems，the beam types are classified into two categories:
14511 以16×16单元顺次旋转切角阵为研究对象,采用最小二乘优化方法综合阵列方向图,得到对地等通量覆盖的宽波束;合理设计波束分布,采用相控阵常规的波束切换功能,得到点波束覆盖图。 the wide beam and thesteerable spot－beam．An innovative method is proposed that only one phased array is used to realize boththe two types of beam．By taking a 16×16 sequentially rotated array as the research object，the least square optimization method is adopted to synthesize the array pattern and the wide beam covering the Earth with equal flux is obtained． The beam distribution is designed reasonably and the conventional beam switching function is adopted to obtain the spot beam coverage diagram．
14512 仿真结果表明,宽波束和可切换点波束均能实现对星下±55°范围的覆盖。 The simulation results show that both the widebeam and the steerable spot－beam can achieve coverage of ±55° below the satellite．
14513 相比常规的多天线方式,这种多工作模式波束实现技术大大降低了卫星系统的复杂度,降低了设计、集成、测试和维护卫星天线系统的时间和成本,降低了卫星平台天线布局的难度,因此具有重要意义。 Compared with theconventional multi － antenna method，the proposed multi － mode beam realization technology reduces thecomplexity of the satellite system greatly，as well as the time and cost of designing，integrating，and maintaining，and also the antenna layout difficulty．Therefore，the proposed method is of great significance.
14514 针对低轨卫星通信过程中功率受限的约束以及宽带业务需求的不断增长,研究了一种宽带传输技术。 To deal with power constraint and increasing broadband service requirement，this paper proposesa broadband transmission technology for low Earth orbit( LEO) satellite communications．