| ID | 原文 | 译文 |
| 13384 | 针对灰狼优化(grey wolf optimization, GWO)算法易陷入局部最优和收敛精度差的问题,提出了一种基于对立搜索和Levy飞行策略的改进灰狼优化算法——OLGWO算法。 | To solve the problem that the gray wolf optimization(GWO) algorithm is easy to fall into the local optimum and the convergence precision is poor, this paper proposes an improved gray wolf optimization algorithm based on opposition search and Levy flight strategy(OLGWO). |
| 13385 | 在算法初始化阶段,采用对立搜索策略以缩小可行解范围; | In the initial stage of the algorithm, the opposite search strategy is adopted to narrow the range of feasible solutions. |
| 13386 | 在灰狼位置更新过程中,为避免算法陷入局部最优采用了Levy飞行策略。 | And in the process of updating location of the gray wolves, Levy flight strategy is adopted to avoid the algorithm falling into the local optimum. |
| 13387 | 4个标准测试函数的仿真实验表明,所提OLGWO算法在收敛速度及求解精度方面均优于GWO算法,可以较快且准确地搜索到目标函数的最优值。 | By four standard test functions, simulation experiments show that the proposed OLGWO algorithm is superior to the GWO algorithm in terms of convergence speed and solution accuracy, and it can search for the optimal solution quickly and accurately. |
| 13388 | 基于OLGWO算法对隧道射线跟踪传播模型进行校正的结果表明,校正后的模型在均方根误差和线性相关性方面具有较优的性能,能够实现铁路隧道环境中信号接收功率的精确预测。 | Next, based on the OLGWO optimization algorithm, the ray tracing propagation model of the tunnel is corrected. The results show that the corrected model has better performances in terms of RMS and linear correlation and can achieve precise prediction of signal receiving power in the railway tunnel environment. |
| 13389 | 提出了一款具有双陷波特性的蜂窝结构分形超宽带(ultra-wideband, UWB)天线,采用二阶蜂窝结构作为辐射贴片和缺陷地结构接地板实现良好的超宽带特性。 | A beehive fractal ultra-wideband(UWB) antenna with double band-notched property is presented in this paper. The excellent ultra-wideband performance is achieved by using two order beehive structures as radiating patch and the defected ground structure. |
| 13390 | 通过在辐射贴片上挖去正六边形和矩形宽缝隙并引入对称鱼钩形枝节,在馈线处刻蚀倒U形窄缝隙产生了3.27～4.27 GHz和7.2～8 GHz两个频段的陷波特性。 | The double band-notched characteristics in 3.27—4.27 GHz and 7.2—8 GHz are achieved by embedding hexagon and rectangle wide gaps and adding two symmetrical fishhook shape stubs on the radiating patch and etching a narrow inverted U-shaped slot on the feeder line. |
| 13391 | 天线在2.8～11.6 GHz的频段内,可有效抑制WiMAX、C波段卫星和X波段卫星窄带系统的干扰.仿真和实测结果基本吻合,表明该天线适合应用于各种UWB通信系统。 | Therefore, the interference of WiMAX, C band satellite and X band satellite narrowband systems can be efficiently restrained at bandwidth from 2.8—11.6 GHz. Simulated and measured results show that the antenna is suitable for all kinds of UWB communication systems. |
| 13392 | 通过分析2010年至2017年期间的中国低纬地区海口站(20°N,110°E)特高频(ultra high frequency,UHF)电离层闪烁,发现绝大部分年份中春分前后电离层闪烁事件发生概率高于秋分前后,综合电离层垂测观测数据,认为主要原因是春秋分背景电离层电子密度和h′F日落增强现象的不对称性。 | By analyzing the observation data of UHF band scintillations recorded at Haikou station(geographic 20°N, 110°E) of the low latitude region in China from 2010 to 2017, we find that the occurrence is greater in the vernal equinox than in the autumn equinox in the eight years. Combined with the data from ionosonde observations, we conclude that the greater occurrence results from the asymmetry between the two equinoxes of the background F2 region electron density and h′F during sunset.The enhanced background F2 region electron density and the significant enhancement of h′F during sunset may be benefit tothe scintillation occurrences. |
| 13393 | 最后基于电离层闪烁月发生概率统计数据,及其与季节和太阳活动的相关性,建立了一种考虑春秋分不对称性的电离层闪烁发生概率季节变化统计模型。 | Based on the monthly occurrences of ionospheric scintillations,and the relationships between season and solar activity, a seasonal variation statistic model of scintillation occurrences with the equinoctial asymmetry is put forward. |