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In order to get the strong convective cloud characteristics exhibiting in satellite images, about 20000 hourly gauge data of 333 surface rainfall stations and corresponding 4000 IR digital cloud images of GMS 4 during the period of 1992～1994 in Henan, Hubei and Sichuan provinces were analyzed.

对1992～1994年夏季四川、湖北、河南3省333个地面雨量站2万多个雨量观测数据以及与之相应的4千余幅GMS－4红外数字云图资料的分析结果表明，云顶温度、温度梯度、云团的膨胀、穿透性云顶的存在、云体相对于云团中心的偏离量与云的降水强度有着明显的对应关系。

Firstly, from Gauss' equations and relative motion equations, the relation of control impulse and relative motion was expressed as analysis formulas and simplified based on the near circular condition. By deeply analyzing the mechanism of impulses in each directions (radial, in-track and cross-track directions) effect on relative motion respectively, two maneuvers to establish formation flying are provided: one is to utilize the impulses in radial and cross-track directions, the other is to utilize the impulses in along-track and cross-track directions. Both of the two methods can establish satellite formation flying of any configuration. The method with impulses irradial and cross-track directions needs only 3 impulses, while the method with impulses in along-back and cross-track directions needs 4 impulses. Lastly, by an example of establishing a space-circle formation flying, two maneuvers were compared with each other in the amount of impulses and fuel consuming estimation.

首先由高斯型拉格朗日轨道摄动运动方程得到轨道坐标系中控制冲量与轨道根数偏差的关系，基于近圆轨道的条件简化并带入相对运动方程，得到控制冲量与相对运动的关系表达式；通过深入分析各个方向（径向、沿迹向与轨道面法向）的控制冲量对相对运动的影响，给出了分别用径向与轨道面法向控制冲量组合和沿迹向与轨道面法向控制冲量组合实现编队捕获的两种控制策略；最后给出了一个空间圆编队捕获实例，并从燃料消耗、施加冲量次数及捕获时间等角度对比研究了两种控制策略的特点。

Ensure a more integrated approach to observation across networks such as those of WMO's WWW, GAW and hydrology and those co-sponsored by WMO such as the Global Climate Observing System; and across disciplines including terrestrial and oceanic, with emphasis on satellite observations

对于跨网络的观测，例如WMO的WWW，GAW和水文网以及象全球气候观测系统这样的WMO合作主持的项目，以及包括陆地和海洋重点放在卫星观测的跨学科的观测，使用更为综合的方法

This is one of the small, satellite, annual genera close to Poa .

这是小，卫星，接近于Poa的一年生草本的属之一。

The accuracy of the measurements of the geocentric vector plays a key role in satellite navigation,but it is affected by the earth oblateness.

卫星利用紫外敏感器和星敏感器进行自主导航的方法中地心矢量的测量精度是影响导航精度的重要因素之一，而地心矢量的测量又受到地球扁率的影响。

Hence, a new space VLBI satellite is needed to support geodetic and geodynamic study.

因此，本文研究了可以对空间VLBI卫星精密定轨的几种技术和应用的可能性。

Firsthand observations and satellite images show that the immediate area around the geographic North Pole is now mostly annual, or first-year, ice—thin new ice that forms each year during the winter freeze.

第一手的观察和卫星图片显示几乎是每年，或者是第一年出现这种情况：冬天封冻时新形成的薄冰环绕地理北极点。

Hamilton discovered the quaternion ,to the middle period of last century,the application of the quaternion and the quaternion matrix are discovered widely in geostatics,the theory of ped-top using, strap-down inertial ,naviation, enginery and organ,robot technology and artificial satellite attitude control,and so on.

R。 Hamilton发现四元数到上世纪中叶，四元数和四元数矩阵方法在刚体动力学、陀螺使用理论、捷联惯性导航、机器与机构、机器人技术、人造卫星姿态控制等领域应用非常广泛。

Several methods of deriving horizontal wind fields from satellite temperature data are analyzed and compared in this paper, including the calculation methods of geostrophic wind, gradient wind and balance wind.

本文分析和比较了利用卫星温度资料计算水平风场的方法，包括地转风、梯度风和平衡风的计算方法。

It is a contest to get a satellite into orbit, and we're way ahead on this.

这是一个使卫星进入轨道的竞赛，我们致力于此。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。