星下点的英文

sub satellite point

substellar point = subastral point

• 星:    star
• 下:    below; down; under ...
• 点:    drop

例句与用法

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1. Gps ; tec ; flare ; subionosphere point
   Gps tec耀斑星下点
2. Sub - satellite point
   卫星星下点
3. 3 . expatiated on the application theory of basic orbit , including subastral point calculation , visibility analysis , coverage evaluating and spacecraft life - span estimate
   3 、阐述了基本轨道应用分析理论，包括星下点轨迹计算、可见性分析、覆盖评估和轨道寿命估算。
4. In order to increase pointing precision , the error caused by inductosyn and ad2s80a are analyzed as a focus , consequently , high precision inductosyn is used , then current iscompensated and finally the input and output differences are adjusted when
   根据卫星轨道姿态,运用球面三角形找出卫星及星下点与目标点之间的关系,建立了指向反射镜与目标点的角度关系。
5. 4 . realize the render and display of subastral point tracks on the global satellite images . also include the display of satellite coverage ; realize the render of the three - dimension scene in which satellites orbiting the earth , including the render of satellite track and satellite model ; realize the render of scene based on the ground viewpoint , including the render of sky background , satellite ana satellite track
   4 、实现了在全球卫星影像地图上卫星的星下点轨迹的绘制和显示,以及覆盖区域的显示;实现了卫星围绕地球旋转的三维场景显示、卫星轨迹显示以及卫星模型显示;实现了以地面观测站为观测视点的场景显示,地面以及天空背景显示,卫星及卫星轨迹显示。