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超声相干技术—相比较法及其应用
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作者 王汝菊 《外藉学者来所报告集》 1991年第2期124-130,共7页
关键词 超声干技术 相比较法 声波 频率
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相位误差对相控阵天线影响分析与改进 被引量:12
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作者 杨东萍 未连保 衣尚军 《无线电工程》 2013年第3期24-26,共3页
为减少相位误差对相控阵天线的影响,介绍了相控阵天线数字移相器相位量化误差产生的原理,分析了相位量化误差对相控阵天线波束指向精度和天线波束性能的影响。为改善这一情况,提出采用递推比较补偿馈相法代替传统的确定性馈相法,通过对... 为减少相位误差对相控阵天线的影响,介绍了相控阵天线数字移相器相位量化误差产生的原理,分析了相位量化误差对相控阵天线波束指向精度和天线波束性能的影响。为改善这一情况,提出采用递推比较补偿馈相法代替传统的确定性馈相法,通过对2种方法进行比较分析,证明在不改变硬件的条件下,递推比较补偿馈相法能够减少相位量化误差的影响,降低波束指向误差的极大值和均方差,提高相控阵天线的指向精度和波束性能。 展开更多
关键词 控阵天线 位量化误差 指向精度 递推比较补偿馈
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A Comparison between Heathcliff and Chillingworth from the Perspective of Romanticism
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作者 姜复宁 于静波 《International English Education Research》 2015年第4期87-90,共4页
Heathcliff and Chillingworth are the two typical satan type heroes among literature works. To some extent, their revenge is similar, but there are also differences. However, there are few comparisons between the two h... Heathcliff and Chillingworth are the two typical satan type heroes among literature works. To some extent, their revenge is similar, but there are also differences. However, there are few comparisons between the two heroes from the perspective of romanticism. From the analysis of the author's living background and their literary genre of the two works, the paper will analyse the reasons why Heathcliff and Chillingworth want to revenge, and reflect their similarities and differences in terms of their character, means, ending, and so on. The paper will analyse the two heroes by using the methods of literature data collection, text comparison and induction, and come to a conclusion that the romanticism carried by the two authors is influential in shaping the two satan type heroes. Thus to gain more details about the similarities of the two cruel revenger, and the differences of their individuality and different ways of revenge. 展开更多
关键词 ROMANTICISM SIMILARITIES DIFFERENCES
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