earth reference meaning in English
地球坐标系
Examples
- This work can be summarized as follows : 1 ) we define several reference frames , including earth reference frame , radar reference frame , target reference frame . then , we give the conversion relationships on the basis of introducing the model of the conversion model
本文的主要工作如下: ( 1 )完成了在仿真系统中用到的雷达视线坐标系、速度坐标系和目标坐标系的定义,在介绍坐标系转换模型的基础上给出了各个坐标系之间的转换关系式。 - The distinct trait of sun synchronic orbit satellite is that there will be the same sun conditions in the subpoint of the satellite wherever the satellite is , it benefits the earth reference equipments . and the regressive orbit satellitr ' s trait is that the satellite can cover the earth periodic , it benefits the dynamic reconnaissance . because of these merits , the sun synchronic and regressive orbit become one of the most popular orbit types
太阳同步轨道的主要特点是卫星在任一时刻其星下点的阳光条件基本相同，这对卫星上对地仪器的工作是非常有利的。而回归轨道的特点是周期性地覆盖地球，这有利于对地球上动态目标的侦察。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。 - Abstract : according to the fragment warhead of the missile , we propose dynamic characteristic of fragment dispersion in different reference frames , calculate dynamic distributing density function in earth reference frame and missile reference frame , and point out the dispersion section of the warhead is different from the dynamic distributing density in earth reference frame and missile reference frame
文摘:以某型防空导弹的破片杀伤式战斗部为例，分析了在不同坐标系中的破片动态飞散特性，分别计算出在地面坐标系和弹体坐标系中破片的动态飞散密度函数，指出在不同的坐标系中战斗部的飞散区和飞散密度不同。