Its orbit is between 800- 1000 km above the earth, and it runs around the north and south poles of the earth, with a running period of about 1 15 minutes. Fengyun-1 meteorological satellite in China is a polar-orbiting meteorological satellite. Its advantages are global coverage and wide observation field of vision.
Satellite characteristics
For polar-orbiting satellites, a satellite can observe a specific area every 12 hours, while meteorological satellites mainly monitor weather systems and atmospheric conditions, which is quite different in the morning and afternoon. Therefore, the polar-orbiting meteorological satellites adopt the networking observation mode, with one satellite crossing the border in the morning, one satellite crossing the border in the afternoon and two crossings in the evening, and the time resolution of global observation data can reach 6 hours.