太阳跟踪的方法主要有两种，光电跟踪和视日运动轨迹跟踪。
There are mainly two ways to track the sun, photoelectricity track and sun angle track.
事实上，一年的长短就是根据太阳在恒星中的这种视运动而确定的。
The length of the year, in fact, is determined from this apparent motion of the sun among the stars.
在提出日凌干扰处理新模型的基础上，根据太阳视面与天线主瓣半功率点截面的相对运动关系，系统阐述了日凌时天线噪声温度的分析方法。
A new model of dealing with solar radiating disturbance is put forward and a systematic explanation to the antenna noise temperature analysis in case of solar radiating disturbance is made.
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