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关于理想共振的几点讨论 被引量:1
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作者 赵长印 刘林 《天文学报》 CSCD 北大核心 1991年第3期268-276,共9页
本文给出了理想共振平衡点附近的共振周期的分析表达式,由此证实了深振区内,共振周期不依赖于振幅的规律.文中还用简单方法导出了共振带宽度的估计式.通过对几种不同共振模型的计算,验证了两个表达式的正确性.
关键词 理想共振 共振周期 共振 宽度
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导管对圆柱共鸣腔径向共振模式的扰动 被引量:1
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作者 张方 战可涛 +2 位作者 冯晓娟 林鸿 张金涛 《计量学报》 CSCD 北大核心 2011年第5期455-458,共4页
修正进气导管的影响对声学共鸣法测量Bohzmann常数kB十分必要。基于一阶声学微扰理论研究了导管对圆柱形共鸣腔理想径向共振模式的扰动,分析了导管末端不同连接方式所带来的声阻抗差异,计算了导管对。(001)径向模式的共振频率和半... 修正进气导管的影响对声学共鸣法测量Bohzmann常数kB十分必要。基于一阶声学微扰理论研究了导管对圆柱形共鸣腔理想径向共振模式的扰动,分析了导管末端不同连接方式所带来的声阻抗差异,计算了导管对。(001)径向模式的共振频率和半宽的扰动值分别为△f/f0≈-0.04×10^-6和△g/f0≈14.15×10^-6,同时分析了导管长度、半径以及径向安装位置的变化对理想径向共振模式扰动的影响。 展开更多
关键词 计量学 声学共鸣法 圆柱形共鸣腔 理想径向共振模式 导管 扰动
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The unified ideal model of mean motion resonance of artificial satellites due to geopotential perturbations 被引量:1
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作者 ZHANG MingJiang ZHAO ChangYin +2 位作者 XIONG YongQing SUN RongYu ZHU TingLei 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第4期840-847,共8页
From Kaula's Earth gravitational potential written in classical orbital elements, the unified ideal model of mean motion resonance of artificial satellites due to geopotential perturbations is developed in this pa... From Kaula's Earth gravitational potential written in classical orbital elements, the unified ideal model of mean motion resonance of artificial satellites due to geopotential perturbations is developed in this paper first, through a suitable sequence of canonical transformations constructed by implicit functions. This unified ideal orbital resonance model is valid for all the commensurabilities between the rotational angular velocity of the Earth and the angular velocities of mean orbital motion of artificial satellites with arbitrary inclination and small eccentricity, and can be also transformed into Garfinkel's general expression of ideal resonance problem. Then 1/1 resonance of the 24-hour satellite with arbitrary inclination and small eccentricity is analyzed under the effect of harmonics of J2 and J 22 of the geopotential, based on the unified ideal model of mean motion resonance. The analytical expressions of the libration period and libration half width of the 1/1 resonance of the 24-hour satellite with arbitrary inclination and small eccentricity are presented. 展开更多
关键词 artificial satellite mean motion orbital resonance unified ideal model
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