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一、什么是极化角?极化角对接收信号的影响。我们国内卫星一般都是线极化,线极化分为水平极化和垂直极化。地面接收天线极化的定义是以卫星接收点的地平面为基准,天线馈源(或极化器)矩形波导口窄边平行于地平面,则电场矢量平行于地平面,定义为水平极化;反之馈源矩形波导口窄边垂直于地平面定义为垂直极化。假定卫星波束中心与卫星同经度,那么与星下点同经度(但纬度不同)的非星下点接收天线能很好地与卫星辐射电
First, what is the polarization angle? Polarization angle on the received signal. Our domestic satellites are generally linear polarization, linear polarization is divided into horizontal polarization and vertical polarization. The definition of terrestrial receiving antenna polarization is based on the ground plane of the satellite receiving point. The narrow edge of the rectangular waveguide port of the antenna feed (or polarizer) is parallel to the ground plane. The electric field vector is parallel to the ground plane and is defined as horizontal polarization ; On the other hand, the narrow rectangular edge of the feed rectangular waveguide is defined as vertical polarization perpendicular to the ground plane. Assuming that the center of the satellite beam has the same longitude as the satellite, the non-satellite receiving antenna with the same satellite under the star (but with different latitudes) will work well with the satellite radiance