论文部分内容阅读
江苏通州市的黄晓锋同学问:1、介绍一下太阳同步轨道答:太阳同步轨道的理论定义是:轨道平面进动方向与地球公转方向大致相同,进动角速率等于地球公转平均角速率(0.9856度/日或360度/年)的人造地球卫星轨道。其实,说简单一点,就是能保证卫星每天以相同方向经过同一纬度的当地上空的轨道。选择太阳同步轨道,能保证卫星每天在特定的时刻经过指定地区,这当然便于我们获得最好的太阳光条件,从而得到高质量的地面目标图像,这就是气象卫星、资源卫星通常选择太阳同步轨道的原因。
Huang Xiaofeng Tongzhou City, Jiangsu Province, the students asked: 1, about the sun synchronous orbit A: The theoretical definition of the sun synchronous orbit is: orbital plane precession direction and Earth’s revolution direction is roughly the same, the precession angular velocity is equal to the Earth’s revolution average angular velocity (0.9856 degrees / Day or 360 degrees / year) of artificial Earth satellite orbit. In fact, to put it simply, is to ensure that satellites in the same direction through the same latitude over the local sky orbit each day. Choosing sun-synchronous orbitals ensures that the satellites pass the designated area at specific moments of the day, which of course allows us to obtain the best possible sunlight conditions for a high-quality ground target image. This is the meteorological satellites. Resource satellites usually choose the sun-synchronous orbit s reason.