Noaa and fy - 1 satellites are polar - orbiting meteorological satellites which are operated by the us national oceanic and atmospheric administration and the china meteorological administration respectively Noaa系列及风云- 1系列卫星分别是美国国家海洋及大气管理局和中国气象局的极地轨道气象卫星。
With resolution of down to about 1 km , polar - orbiting weather satellites enable good depiction of the structure of tropical cyclones and estimation of their location and strength 由于极地轨道天气卫星云图的分辨率可达约一公里，所以能清楚显示热带气旋的结构，有助估算热带气旋的中心位置和强度。
As a continuous effort to enhance its weather satellite information service , the observatory has put on the internet high resolution cloud pictures received from polar - orbiting weather satellites 天文台一直致力加强天气卫星资讯服务，现已把极地轨道天气卫星的高分辨率云图放进天文台互联网网页上。网址是
The high - resolution cloud images of polar - orbiting weather satellites can reveal the detailed cloud structure , while the cloud images of geostationary weather satellites have extensive geographical coverage 极地轨道天气卫星云图的解像度很高，可显示较细致的云团结构。地球同步天气卫星云图的覆盖范围则较广。
Polar - orbiting weather satellites are capable of observing features down to 1 km . this enables good depiction of the structure of tropical cyclones and estimation of their location and strength 由于极地轨道气象卫星的分辨率高，可达约一公里，故能较清楚显示热带气旋的结构，有助估算热带气旋的中心位置和强度。
The high - resolution cloud images of polar - orbiting weather satellites can reveal the detailed cloud structure , while the cloud images of geostationary weather satellites have extensive geographical coverage 极地轨道天气卫星云图的解像度很高，可显示较细致的云团结构。地球同步天气卫星云图的覆盖范围则较广。
Polar - orbiting weather satellites are capable of observing features down to 1 km . this enables good depiction of the structure of tropical cyclones and estimation of their location and strength 由于极地轨道气象卫星的分辨率高，可达约一公里，故能较清楚显示热带气旋的结构，有助估算热带气旋的中心位置和强度。
Most of them pass over the same place a couple of times a day . as they operate at a distance closer to the earth , they are only capable of taking cloud images of a limited area of the earth each time 它们大部份一天内经过同一地点一两次。由于较接近地球，它们每次只能拍摄到有限区域的云图。相对地球同步气象卫星，极地轨道气象卫星图像的数目较少，范围亦较小。
The images include those captured by the noaa series of polar - orbiting meteorological satellites noaa - 15 , 16 and 17 operated by the u . s . national oceanic and atmospheric administration and the fengyun - 1 series of satellites fy - 1d operated by the china meteorological administration 以上极地轨道卫星图像接收自美国国家海洋及大气管理局的noaa卫星系列noaa - 15号16号及17号及中国气象局的风云1号卫星系列风云- 1d 。
