| ID | 原文 | 译文 |
| 12544 | 为研究存在障碍物环境下的电波传播问题，提出利用区域分解原理求解抛物线方程 (parabolicequation, PE) 的方法。 | In order to study the wave propagation problems under the obstacles environment, we use the domain decomposition principle to solve parabolic equation. |
| 12545 | 该方法首先建立电波传播的 PE 数学模型，对障碍物所在区域进行区域分解，对不同区域的场值进行分区计算，即分别使用离散混合傅里叶变换 (discrete mixed Fourier transform, DMFT) 算法与有限差分(finite difference, FD) 算法进行计算，并引入追赶算法提高计算效率，从而实现该情况下空间中整体场值的快速计算。 | In this method, we firstly establish the mathematical model of theparabolic equation, then decompose the domain in the barrier. Next, we calculate the field values of different regions bypartition using discrete mixed Fourier transform(DMFT) and finite difference(FD) algorithms respectively. Then,Thomas algorithm is introduced to improve the calculation efficiency and achieve the total field computation quickly inthe obstacles environment. |
| 12546 | 最后，引入矩量法 (method of moment, MoM) 用于对新算法的精度验证，仿真结果表明两种方法具有较好的一致性。 | Finally, method of moment is used to validate our new method. Simulation results show thattwo methods have good consistency. |
| 12547 | 新算法具有适用性强、计算速度快的特点，为求解存在介质障碍物环境下的电波传播问题提供了一种新颖的可靠的途径。 | The new algorithm has the characteristics of extended applicability and increased computation speed, providing a novel and reliable approach to study the wave propagation problems under the obstacleenvironment. |
| 12548 | 为清晰认知短波定向扇形天线阵，改进阵列波束合成方法，提升波束合成系统性能，利用鱼骨天线阵列模型模拟接收实际不同极化的天波信号，分析阵列合成波束的指向、增益随来波极化和阵列单元数的变化规律，得到在高极化角来波信号时，来波极化补相时阵列的合成波束比按主极化补相时指向更稳定且增益最大可提高 2 dB。 | In order to clearly recognize the shortwave directional sector antenna array, we improve the arraybeamforming method and the performance of the beamforming system, and use the model of fishbone antenna array tosimulate the reception of different polarization signals. We analyze the direction and gain of beam vary with thepolarization of incoming wave and the number of array elements. The results show that when the incoming wave signalis a high polarization angle, the direction of the array beamforming according to the polarization phase complement ofthe incident wave is more stable than that of the main polarization phase complement, and the gain can be improved by 2dB. |
| 12549 | 同时利用实测数据对两种补相方式下阵列的波束合成性能进行了验证，与理论分析吻合很好。 | At the same time, performance of the beamforming of two complementary phase modes are compared with themeasured data. It fits well with the theoretical analysis. |
| 12550 | 本文方法为进一步深入研究阵列极化特性提供了理论基础，并对波束合成实际工程化应用提供了理论依据。 | This method provides a theoretical basis for further studying thepolarization characteristics of the array and the practical engineering application of the beamforming. |
| 12551 | 提出了一种基于非相干散射雷达（incoherent scatter radar，ISR）等离子体谱线提取高精度电子密度的方法。 | A method of using plasma lines analysis to obtain the high-resolution electron density is presented inthis paper. |
| 12552 | 以欧洲非相干散射雷达科学联合会（European Incoherent Scatter Scientific Association，EISCAT）在2015 年 10 月 31 日 14:00—14:09UT 观测到的增强等离子体谱线为例，进行了具体的分析讨论。 | The enhanced plasma lines observed by European Incoherent Scatter Scientific Association (EISCAT) UHFradar at 14:00−14:09UT on October 31, 2015 are analyzed and discussed. |
| 12553 | 首先，采用曲线拟合的方法将增强的等离子体谱线从频谱中提取出来。 | First, by using curve fitting method, theenhanced plasma lines are extracted from the intensity profile. |