noun
: a radar system that uses the motion of the vehicle (as a spacecraft) carrying it to simulate a system having a much larger antenna area and that is used to obtain high-resolution images of a surface (as of a planet)
noun
: a radar system that uses the motion of the vehicle (as a spacecraft) carrying it to simulate a system having a much larger antenna area and that is used to obtain high-resolution images of a surface (as of a planet)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012