earth based meaning in Chinese

地面的

This dissertation established a novel distributed spaceborne sar simulation system based on the high level architecture ( hla ) . this dissertation developed a mathematical model of instantaneous sphere earth model and instantaneous circle orbit model for the geometry system between the satellite platform and the targets on earth based on the satellite platform ’ s orbit features and sar system ’ s operational characteristics , unlike the traditional sphere earth model and circle orbit model
本文从建立精确的、易于仿真的星地几何关系入手,舍弃了传统的星载sar研究中的球型地球模型和圆形轨道模型,根据星载sar的轨道特点和sar的工作特点,对局部球型地球模型进行改进,建立了在瞬时球型地球模型和瞬时圆形轨道模型下的星载sar仿真。