In this setup, the small antenna directs waves of electromagnetic energy towards the animal and towards a receiver.

在这个设置中，小天线将电磁能量波导向动物和接收器。

Instead of building an extremely large antenna to capture returning waves, these satellites combine signals from a relatively small antenna moving through space to sharpen resolution.

这些卫星并没有建造一个非常大的天线来捕获返回波，而是将来自一个相对较小的天线在太空中移动的信号组合起来，以提高分辨率。