radar astronomy

Inverse Aperture Radar ( ISAR ) can image non-cooperative moving targets such as aircrafts , ships and celestial objects over a long distance under all weather and all day . It is of particular interest for strategic defense , anti-submarine warfare and radar astronomy .

逆合成孔径雷达（ISAR）能够对飞机、舰艇、天体等非合作运动目标进行全天时、全天候、远距离成像，在战略防御、反卫星、战术武器以及雷达天文学中都有重要应用价值。

Later innovations have included the replacement of tubes by transistors and of wires by printed circuits . See also radio and radar astronomy .

后来的发明还包括用晶体管取代了电子管，印制电路取代了导线。

In spectroscopy , physics , chemistry , medicine , optical communications , radar , astronomy and many other areas of research and application , the precise detection of weak signals always plays an important role .

在光谱学、物理、化学、医学、光通信、雷达、天文学等众多研究和应用领域，都涉及到微弱信号的精密检测。

In the application of satellite receive antenna 、 H-F radar antenna and electric astronomy interference array , source signal number is large and target refresh fast .

在卫星接收天线，高频地面雷达天线和射电天文中的干涉阵列等应用领域，测向有信源容量大，目标更新快的特点。