ID 原文 译文
13844 介绍了这种天线实现圆极化和差波束的馈电原理, 应用仿真软件Ansoft HFSS对8单元阵列进行了仿真设计, 给出了仿真方向图, 分析了8路馈电信号幅度和相位误差对设计的影响。 The design method and the feed theory are introduced. The feed is simulated by using the software of Ansoft HFSS and the simulation patterns are given. At last, the affections of amplitude and phase are analyzed.
13845 结果表明, 该馈源在一定幅度相位误差范围内, 实现了112GHz频带范围内单脉冲跟踪, 且具有良好的性能。 The simulation results indicate that the feed can form dual circular polarization beam at the frequency range from 1 to 12 GHz and has a good performance.
13846 针对如何在频域使用反相对称法来进一步提高通信中的信噪比问题, 给出了一种计算噪声相关性的办法, 研究了不重叠和有部分重叠两种情况下的相邻频带噪声的相关性。 For promoting the signal-to-noise ratio using the phase-inversion symmetric modulation in frequency domain, a method for computing the correlation of noise is presented and the correlation of noise in adjacent frequency bands in the case of partially and fully overlapping is researched.
13847 证实了相邻频带的噪声具有相关性, 且这种噪声的相关性及其稳定性随着带宽的增加而减小。 The existence of relevance of noise in adjacent frequency bands is authenticated, and both the relevance and its stability become stronger as the width of frequency band decreases.
13848 论证了相邻频带的噪声相关性随着频带重叠程度的减小而线性减弱, 为使用反相对称法来进一步提高通信中的信噪比提供了指导, 并为通信噪声理论增加了新的内容。 The correlation of noise in adjacent frequency band decreases linearly as the overlap decreases in adjacent frequency bands, which provides the guidance for further promoting the signal-noise ratio using the phase-inversion symmetric modulation and enriches the theory of communication noise.
13849 为掌握通信电台在连续波辐照下的带内干扰规律, 揭示通信电台连续波带内干扰作用机理, 以某型超短波通信电台为受试对象, 通过搭建试验平台, 利用辐照法对其进行干扰效应试验研究，进而确定在不同参数指标作用下通信电台的受干扰规律。 In order to understand the communication station interference patterns in continuous wave irradiation zone and the interference mechanism of communication station in a continuous band, through building the test platform, we carried out the interference test of a certain type of VHF communication station using irradiation on radio different parameters under the action of interference patterns.
13850 研究结果表明：该超短波电台的带内敏感频率范围为30kHz；在相同的功率模式下, 电台工作于高频状态下更容易受到干扰；提高电台工作信号的功率能有效提高通信电台的抗干扰能力。 The experimental results show that the frequency range of the ultra short wave radio is 30 KHz, the higher frequency signal is more susceptible to interference under the same condition, and the increase of receiving power can effectively improve the anti-jamming ability.
13851 针对传统信号传播路径损耗模型接收的信号强度指示 (received signal strength indication, RSSI) 测距误差较大, 提出了基于反向传播 (back propagation, BP) 神经网络模型的RSSI测距方法。 In order to solve the problem of signal propagation path loss model and reduce the error of received signal strength indication (RSSI) distance measurement, we propose a RSSI ranging method based on back propagation (BP) neural network model.
13852 首先, 研究分析传统信号传播路径损耗模型及测距误差。 Firstly, we research and analyze the error model and the traditional ranging signal propagation path loss.
13853 其次, 利用BP神经网络构建新的路径损耗模型, 并将该模型应用到RSSI测距中, 对基于BP神经网络模型的RSSI测距方法进行研究。 Secondly, using BP neural network, we propose a new path loss model, which is applied to RSSI ranging, and then carry out research on RSSI location method based on BP neural network model.