章动

带有微弱章动的圆球在粗糙水平面上的运动挑战X运动

Exercise . The Motion of a Sphere with Weak Nutation on a Rough Horizontal Plane

该方法明显优于章动NMR技术。

This method is superior obviously to nutation NMR technique .

由Z项估算章动的振幅

An estimation of the nutational amplitude by the z-term

从ILS的Z项中分离相同周期的章动项与非章动项的方法

The method for seperating the same periodical nutation and non-nutation terms from ILS z-terms

刚体地球CIP轴的极移和岁差章动

Polar migration and nutation of CIP axis of rigid earth

飞行试验结果表明，C星的云图网格配准精度优于1个可见像素，章动角和摇摆角也符合设计要求。

The on-orbit result showed that the gird registration of clouds imaging for FY-2C satellite was better than 1 visible pixel , and the nutation angle and swing angle met the requirements for design .

本文提出了一种从ILS的三组观测Z项中分离相同周期的章动误差项与非章动项的方法。

A method for separating the same periodical nutation and non nutation terms from the Z terms of ILS three group observations is developed .

由此对CIP轴进行了理论定义，并给出了其极移、岁差和章动的动力学方程。

Therefore , the theoretical definition of CIP and its dynamical equation on polar motion and precession-nutation have been given .

CAAD应用与发展浅析章动研究简评

A brief research on the development and the usage of CAAD

在各阶潮汐力矩的作用下，得到CIP轴岁差章动的表达式。

Under the effect of every order tidal moment , the expression of precession and nutation for the CIP axis is presented .

为此，在基于VLBI资料解算ERP高频变化时，建议采用直接求解模式，并考虑岁差章动模型偏差的影响。

In the solution of high frequency variation of ERP from VLBI observations , the direct solution mode with the consideration of the pole offsets is accordingly recommended .

J2摄动对相对轨道的影响分为相对轨道构形的漂移、相对轨道平面的章动和进动。

J2 perturbation makes the relative orbit drift in the in-track direction , nutation or procession .

具有线性电光效应的LiNbO3晶体完成光束章动功能。

LiNbO_3 crystals with linear electro-optic effect are utilized to perform the beam nutating function .

在章动传动减速器的总体结构设计的基础上，进一步完成了基于Solidworks系统的双圆弧螺旋锥齿轮章动传动减速器实体的三维建模和整机虚拟装配。

On the basis of the whole construction of the reducer , the 3D modeling and virtual assembly for nutation drive have been completed in Solidworks system .

计算了内核动力学对受迫章动的影响，结果表明其影响已在目前VLBI可检测的量级内。

The influence of inner core dynamics on nutations are computed , the results indicated that its effect can be perceived from VLBI observations .

比较了VLBI章动观测值和IAU1980章动理论值，其差异可为改进章动理论提供依据。

VLBI observations of nutations are compared with IAU 1980 nutation series . Their deviations can provide a basis for improving IAU nutation theory .

根据地球自由核章动在周日重力潮汐观测中的共振效应确定了自由核章动的复本征周期和品质因子Q值，研究了极移重力效应；

The complex eigen period period and Q value of the FCN are evaluated based on the resonance observed in the diurnal tidal gravity , the gravity change due to the polar motion is also studied .

地球固体内核（SIC）和地球其余部分之间的引力和压力的耦合作用引起了一个力矩，从而对地球的章动运动产生影响。

Gravitational and pressure couplings between the solid inner core ( SIC ) and the rest of the Earth give rise to torques through which the inner core influences the nutational motion of the Earth .

试验表明该微定位平台的z向最大位移为12μm，章动角随进动角的不同而变化，最大可达130μrad。

It is noted that the maximum displacement in z direction is up to 12 μ m. The nutation an - gle changes with the procession angle and the maximum nutation angle is approximately 130 μ rad .

关于IAU章动理论

On IAU nutation theory

本文通过提出一个新的假设把环形阻尼器内的流体认为是可变的SLUG讨论带部分充液阻尼器自旋卫星的章动阻尼。

A new assumption , that the fluid in an annular damper is supposed to be a variable slug , is taken to discuss the nutation damping of a spinning satellite with a partially filled viscous annular damper .

通过推导发现，奇数阶引潮力位产生的岁差章动力矩使得黄经章动和交角章动出现了异向项（即：黄经章动出现了cos项，交角章动出现了sin项）。

Theoretical deduction shows that precession-nutation moment induced by odd order tidal generating potential causes out of phases of longitude and obliquity nutation ( namely , there are cos term in longitude nutation , but sin term in obliquity nutation ) .

本文讨论FK5、新岁差常数，新章动理论的采用引起测时测纬结果的变化。

In this paper , the changes in time and latitude determinations caused by using FK5 , new astronomical constants , new nutation series are discussed .

磁悬浮支承应用于控制力矩陀螺具有高精度，长寿命的优点。高速转子的陀螺效应导致的失稳制约了其在CMG中的应用，尤其是章动造成的磁悬浮转子高速失稳问题。

There are many merits to support control moment gyroscope ( CMG ) by using magnetic bearings , expect for the high rotor instability caused by the nutation under the situation of CMG unbalance .

日长变化是表征地球自转运动的一个重要参数，它与极移、岁差和章动统称为地球定向参数（EOP）。

Length of Day ( LOD ) change is an important parameter which reflects the earth rotation . LOD change 、 Polar Motion ( PM )、 Precession and Nutation are called Earth Orientation Parameters ( EOP ) .

本文从爱因斯坦场方程的解开始，严格而细致地论证了相对论岁差和章动的起源，推导了测地、Lense-Thirring、Thomas岁差章动和黄极的相对论进动的理论表达式。

Beginning with the solution of the Einstein 's Field equation , this paper rigorously and intensively discusses the origin of the relativistic precession and nutation , and derives the theoretical expression of the geodetic 、 Lense-Thirring , Thomas precession , nutation and the relativistic advance of the ecliptic pole .

由于内核的存在，将出现两个新的与地球自转有关的章动模式，即顺向的自由核章动（PFCN）和内核摆动（ICW）模式。

Because of the inner core of the earth , there will have two nutation modes related to the earth 's rotation , i. e. a prograde free core nutation ( PFCN ) mode and a inner core wobble ( ICW ) mode .

通过PREM地球模型检测了内核对章动振幅的影响，由此发现内核在亚毫角秒量级上影响主要的章动项，它和当今的观测精度是一致的。

By the PREM earth 's model , the influence of the inner core to the vibration range of nutation is checked . The main solution is that the inner core has effects to the main nutation terms in 0.1 mas , which is coincided with recent observation precision .

地球动力学扁率值对章动计算的影响

Effect of Numerical Value of Earth Dynamical Flattening on Nutation Computation

万向支架弹性对陀螺仪章动漂移的影响

Influence of elasticity of cardan gimbals on Nutation drift of gyroscope