ID 原文 译文
56208 2 d B.此外,相对于经典的结合信号索引的正交频分复用,所提方法具有更高的系统频带利用率和系统误码性能,如当误比特率为10-5时,系统频带利用率可提升约9.1%,同时系统误码性能提升约0.13 dB. Furthermore, compared with the classical orthogonal frequency division multiplexing with IM (OFDM-IM), the proposed method has higher SE and bit error ratio performance.
56209 天线交叉极化隔离度与全极化相控阵雷达极化信息精确获取密切相关. High cross-polarization isolation (CPI) is crucial to the accurate polarization measurement for the fully polarimetric phased array radar (PPAR).
56210 为提高交叉极化隔离度,基于三馈点微带贴片天线阵元提出了一种全极化相控阵极化状态配置方法. In this paper, we propose a polarization state configuration (PSC) method to improve the cross-polarization isolation based on the triple feed microstrip patch element.
56211 不同于传统的固定极化状态,如线极化和圆极化,该方法可根据波束指向动态调整辐射信号的极化状态. Compared with the conventional fixed polarization state of radiated wave whether it has linear, circular or elliptical po?larization state, our PSC approach configures the polarization state on the basis of beam steering.
56212 将交叉极化隔离度提高问题建模成一个多变量带约束非线性最优化问题,从而实现全极化阵元激励幅度和相位的最佳配置. The CPI improvement is formulated as an optimization problem, thereby achieving the optimum configuration of magni?tude and phase for the fully polarimetric antenna.
56213 同时,为实现全极化相控阵在极化散射特性测量中的统一化表示,推导了任意极化状态下标准散射体的固有和后向散射矩阵的通用表达式. To facilitate the uniform representation for the polarization measurement application of PPAR, the universal expressions of intrinsic and measured backscatter matrices are derived for arbitrary polarization states.
56214 利用全极化相控阵天线验证了所提极化状态配置方法的有效性和可行性. The dual-polarization dipole array is used to evaluate the priority of the proposed method.
56215 通过仿真分析,结果表明该方法能够获得更高的交叉极化隔离度,并且能够适应相控阵天线波束宽角扫描特性. Simulation results reveal that our approach could obtain higher cross-polarization isolation while being available in a larger scanning range.
56216 经过极化状态配置后的隔离度参数可以显著提高全极化相控阵雷达极化测量精度. The configured CPI could improve the polarization measurement accuracy for the fully PPAR.
56217 互联网和物联网规模的迅速扩张促使全球数据存储总量呈现爆炸式的增长,导致数据系统从计算密集型向数据密集型方向发展. The rapid development of the Internet has led to explosive growth in the total volume of globaldata storage, leading to the development of data systems from computing intensive to data intensive.