ID 原文 译文
12904 该频变耦合双工器快速综合方法保持了较好的通带等波纹特性，且可以根据设计需要，任意指定各通道滤波器的频变耦合拓扑结构。 The proposed method shows that the passband of the diplexer maintains better equirippe characteristics and the coupling topology of each channel filter can be arbitrarily specified according to the specifications.
12905 针对工程设计中综合射频系统高空核电磁脉冲(high altitude nuclear electromagnetic pulse, HEMP)防护指标无法分解到各组成设备的难题，研究HEMP对综合射频系统的耦合。 Aiming at the problem that high altitude nuclear electromagnetic pulse(HEMP) protection index of integrated radio frequency system cannot be decomposed into each component equipment in engineering design, the coupling of HEMP to the integrated radio frequency system (IRFS) is studied.
12906 采用多通道耦合分析与验证方法。分别对综合射频系统“超短波”，very-hgh frequency, VHF)天线、“短波”(high frequency, HF)天线、L波段天线、机架以及互联线缆的HEMP耦合进行了仿真分析，并在有界波实验室开展了相应的测试。 A multi-channel coupling analysis and verification method is adopted. The HEMP coupling of VHF antenna, HF antenna, L band antenna, frame and interconnected cable in the IRFS is simulated and analyzed, and corresponding tests in the bounded wave HEMP simulators conducted.
12907 仿真和试验结果显示，最主要的耦合通道是VHF天线，最大耦合电压达800 V(次要通道是综合射频 机架模块的非金属连接器孔缝，最大耦合电压达100 V(HEMP对屏蔽线缆的耦合电压忽略不计。 Simulation and test results show that the most important channel for HEMP coupling to IRFS is the VHF antenna, and the maximum coupled voltage is up to 800 V. The secondary channel is the aperture of the non-metallc connector of the IRFS rack module, and the maximum coupled voltage of the aperture is up to 100 V. The coupling voltage of the cable can be ignored.
12908 以上耦合电压指标可作为机载综合射频系统分解到各个天线和模块的工程防护设计指标要求。 These coupling voltage indices can be used as engineering protection design for arborne IRFS, and be decomposed into various antennas and modules.
12909 基于 !24 MHz 欧洲非相干散射甚高频雷达(European incoherent scatter very high frequency radar, EISCAT VHF radar)在 !003—2014 年间所观测的极区中层冬季回波(polar mesosphere winter echoes, PMWE) 数据，分别从出现率、持续时间、高度分布、日变化、季节变化方面分析讨论了PMWE的平均时空特征，并对国际上PMWE与太阳和地磁活动的相关关系理论中存在的ー些问题进行了讨论。 The main purpose of the paper is to analyze the average spatial-temporal characterstcs of polar mesosphere winter echoes (PMWE)in terms of occurrence rate, duration, height distribution, dally and seasonal variation by using statstical data based on the european incoherent scatter very high frequency (EISCAT VHF) radar during 2003—2014. At the same time, some problems in the theory of correlaton between PMWE with solar and geomagnetc activities are discussed.
12910 结果表明：PMWE出现的几率非常低且持续时间普遍较短，其平均出现率为3.26%，每次出现的平均持续时间为67 min’高度分布范围主要在6!〜70 km，且在66〜67 km高度范围内出现率最高’PMWE大多出现在白天，极少出现在夜晩，且11月份的出现率较高，12月份的出现率非常低。 The results show that the occurrence of PMWE is very few and the duration is generaHy short. The average occurrence rate of PMWE is 3. 26%. The average duration of each occurrence of PMWE is 67 minutes. Its height distribution ranged is 62—70 km and the highest occurrence rate occurs in the height range of 66—67 km. Secondly, it is found that PMWE manly occurred in the daytime and rarely occurred in the night. The PMWE occurrence rate in November isrelatively high and in December is very low.
12911 本文的研究为解释PMWE形成的物理机制提供了有价值的参考。 It can provide an importance consult interesting to explain the physcal information mechanism of PMWE.
12912 传统的基于密码机制和安全协议的无线网络安全存在隐患，新的基于物理层的射频指纹(radio frequency fingerprinting ,RFF)方法利用发射机射频信号的细微差异来区分不同个体，具有难以克隆、伪造的优点，有着广阔的应用前景。 The traditional wreless network security based on cryptographic mechanism and security protocol has potental safety hazard. The new physical layer-based RF fingerprinting method uses the fine- feature of transmitter RF signals to distinguish different individuals. It has the advantages of being difficult to clone and forge, and has broad application prospects.
12913 本文首先讨论了理想RFF应具备的四种基本特性，即唯一性、时不变性、 独立性和稳健性，分析了在四种基本特性方面的研究现状。 This paper first discusses the four basic characteristics of ideal RF fingerprinting, namely uniqueness, time invariance, independence and robustness, and analyzes the research status in four basic characterstics.