摘要:
正 我们研制的微波辐射计是用于机载的和地面的无源探测设备,可用来接收地面上各种物质辐射的微波能量,从而判别不同的地物目标。天线是微波辐射计用来接收地物辐射能量的部件,对天线除要求高增益低旁瓣外,还要求有比较好的方向图,紧凑的结构和具有所要求的地面分辨率。如图1所示,天线尺寸(D),飞行体高度(H)和地面分辨率(r)的关系为
Abstract:
After comparing many types of antennas, we decided on the corrugated horn feed cassegrainian antenna. After improvement in input feeding method, the antenna becomes usable. After many flying tests, it proves rugged enough. For X-band, the characteristics of the antenna are: diameter D=800 mm, Gain G=34.7 dB, Side lode 2%, beam width 20.5=247 .
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