查询词典 node longitude

This paper presents the formula of the initial values of theorbital parameters— celestial longitudeφ_0 of the sun, right ascension ofascending nodeΩ_0 and argument of perigeeω_0, used for calculating orbitalheat flux received by satellite.

文章给出了卫星热分析空间外热流计算中所需要的轨道参数太阳黄经、交点赤经和近地点幅角的初值φ0、_、_的计算公式。

All orbits by which targets can be covered are described according to the longitude of ascending node.

以升交点经度的范围来描述所有能覆盖到目标的轨道。

Using the analytic results above, in chapter 4, a special data relay constellation is designed for space station, which include mainly the selection of orbit altitude, eccentricity, inclination, longitude of ascending node, the number of orbit and distribution of satellite.

探讨了卫星相对于天基的运动特性，并利用地基运动特性的结果，得到了卫星相对于空间站在过顶时间限制条件下的升交点取值范围。

The analysed results show that among the 106 earthquakes of above magnitude 7.0 in 20th century,there are 71% occurred in the period when angle between Moon′s path and the celestial equator turns small and there are over 62% happened when the lunar longitude of ascending node lies from 350° to 210°.

分析结果表明，本世纪106次7.0级以上大地震71%发生于月亮轨道与赤道交角变小阶段，62%以上发生于月亮升交点黄经位于350°～210°期间。

The determination method of descending/ascending node, longitude of ascending node and frozen orbit parameters for sun-synchronous orbit satellite design was analyzed on the basis of six general orbital elements.

在轨道六要素的基础上，分析了卫星太阳同步轨道设计时降交点地方时、升交点赤经，以及冻结轨道参数等的确定方法。

The determination method of descending/ascending node, longitude of ascending node and frozen orbit parameters for sun-synchronous orbit satellite design was analyzed on the basis of six general orbital elements.

引言卫星的轨道设计一般可分为地面覆盖、轨道复现、卫星组网、星下点照明和卫星受照要求等几类[1]。

According to the results of small satellite to ground station, the longitude ranges of ascending node limited by the cross-time can be gained relative space station.

并且利用升交点经度特性，得到了在过顶时间限制条件下的升交点取值范围。

Seismic regions in which large intermediate and deep focus earthquakes have significant 18.6 years cycle have been determined by analyzing correlation between the events and the tropic longitude of lunar ascending node.

分析全球中源和深源大地震与月球交点运动的关系，确定了15个地区的中源和深源大地震有明显的18.6a地震轮回。

In chapter 3, the characteristics of relative motion of small satellite based on ground station are firstly analyzed, in which using spherical trigometry, the analytic formulas evaluating the longitude ranges of ascending node which can cover the target are deduced with J2 precession. With the solution, the longitude ranges of ascending node limited by the cross-time can be gained. Secondly, a serious of characteristics of small satellite to space station is studied.

在第3章，首先分析了卫星相对地基的运动特性，在地基的运动特性研究中，重点研究了以升交点地理经度来描述所有能覆盖到目标点的轨道，利用球面三角形方法推导了在考虑地球形状J2项摄动影响时，各种情况下能覆盖目标点的轨道升交点经度范围，得到了完整的解析表达式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。