回归轨道

系统研究了近地轨道、太阳同步轨道、回归轨道、静止轨道、临界和冻结轨道的设计原理，在此基础上，建立了轨道设计模型。

Systems analyzed on the design principle of near-earth orbit , regression orbit , stationary orbit , critical orbit and construction orbit . Base on this , a orbit design model is given .

最后给出了一个轨道高度750～800km，卫星太阳同步轨道、冻结轨道和回归轨道的算例。

At last , an example of design for sun-synchronous , frozen and return orbit in the orbit of some satellite which altitude was 750 to 800 km was given .

首先给出考虑J2摄动项时近地轨道卫星的轨道模型、星下点计算方法和覆盖判断准则，在此基础上给出一种近地回归轨道的迭代设计方法。

The orbit models , the calculation methods of sub satellite and the coverage judgement which take into account the J 2 perturbations are given first , and then an iterating methods of designing satellite orbit with repeat ground trace is proposed .

太阳同步兼回归轨道的控制方法

A control method of the sun - synchronous orbit with repeating ground trace

一种近地回归轨道区域性覆盖星座设计

Designing LEO Retrograde Orbit Satellite Constellation for Regional Coverage

一类由星下点反算卫星近圆回归轨道的方法

Calculation Method of a Kind of Near-round Repeating Satellite Orbit Using Nadir Points

由于以上的优点，太阳同步回归轨道成了所有卫星轨道中最常见的轨道之一。

Because of these merits , the sun synchronic and regressive orbit become one of the most popular orbit types .

太阳同步回归轨道既可以满足光照条件的要求，又可以满足时间分辨力的要求，是对地观测航天器首选轨道之一。

Repeat sun-synchronous orbit is one of the most important orbits for earth observation missions , because the orbit can satisfy the requirements of illumination and temporal resolution .

提出了一类近圆回归轨道的设计方法，解决当飞行任务对星下点有要求时，近圆回归轨道的设计问题。

A method of nearly-round repeating orbit designing is proposed . It 's aimed to resolve the question of orbit designing with the restriction of a specific satellite ground trace .

阐述了临界倾角太阳同步回归轨道这种特殊椭圆轨道的设计方法，总结了其轨道要素的计算步骤。

The method of designing special elliptic orbit which was critical inclined , sun synchronous and repeating ground trace was expounded , and the calculation process of this method was summarized .

在区域间断覆盖星座设计时常常选用每天运行12、13、14、15圈的近地圆回归轨道，因而最后列出了这4种回归轨道的轨道高度和倾角。

The near circle low earth orbits which repeat after 12 、 13 、 14 、 15 orbits per day are often chosen in designing regional partial coverage constellations , so the heights and the inclination angles of these 4 kinds orbits are listed in the end .

大起、大落、回归正常轨道，周而复始，这是互联网行业的发展规律。

Rise fast and fall hard , this law rules the development of Internet industry .

米切尔将尽快动身，到中东协助巩固以色列和哈马斯激进组织在加沙的停火，推动和平进程回归正确轨道。

He will go to the region as soon as possible to help strengthen the Gaza truce between Israel and the militant group Hamas , and get the peace process back on track .

在一个短时期内太阳将看起来太过于接近，直到地球回归其自身轨道。

The Sun may seem too close for a brief time until the Earth returns to her orbit .

收获信誉度毫无疑问会增强你的自信心，这样你很快就会回归乐观的轨道。

Gaining credibility is sure to strengthen your confidence , so you 'll be back on the optimistic path in no time .

所有这些措施都将使美国财政回归平稳运行轨道——尽管批评家指责瑞恩先生的数据是基于可信度极低的假设之上的——例如降低税率带来的失业率迅速下降、经济上涨。

All of this would place America 's finances on a sounder path - though critics note that Mr Ryan 's figures are based on some highly implausible assumptions , such as a prompt collapse in the unemployment rate and a surge in growth thanks to lower taxes .

因此，我们有必要对其进行反思，探索相应的对策，帮助他们重新回归正常生活的轨道。

Therefore , it is necessary for us to consider the phenomenon and explore countermeasures so as to help the group come back to normal life .

作为一个人口结构更具活力、创新能力更强并且私人储蓄率低的经济体，美国回归正常政策制定轨道的可能性要大于欧元区和日本。

As a more demographically dynamic and more innovative economy , with low rates of private saving , the chances of escape into normal policy settings are better for the US than for the eurozone or Japan .

新公共服务理论使得政府的权威、控制力、管理能力和权力运用的方式和方法等发生了根本性转变，从而使公共服务回归到以人为本的轨道上来。

Fundamental changes have been induced in the government authorities , control force , management capacity and power implementation by using the new theory of pulbic management , by which the public service is brought into the mode of humanistics .