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每天,电视里的气象卫星图都会把变幻莫测的天气形势准确生动地传递给人们。然而有谁知道,这样及时的信息是通过什么方式获得的呢? 寻求答案还要上溯到40多年前。1960年4月1日,美国发射了第一颗气象卫星,使气象卫星及其应运而生的卫星气象学得了迅速发展。国际上使用的气象卫星有两种:一种叫极轨气象卫星,距地面高度为800-1000公里。沿南北方向经两极附绕行。一种叫地球静止气象卫星,相对静止于赤道某地上空3.6万公里处,可以观测到全球近1/3范围。我国是从70年代初开始利用自己研制的设备来接收美国极轨气
Every day, the weather satellite imagery on TV will convey the unpredictable weather situation to people accurately and vividly. However, who knows, in what way is such timely information obtained? The answer to the question goes back more than 40 years. On April 1, 1960, the United States launched its first meteorological satellite, which made the meteorological satellite and its emerging satellite meteorology a rapid development. There are two kinds of weather satellites used internationally: one is a polar orbiting meteorological satellite with a height of 800-1000 km above the ground. Along the north and south by the two poles attached around. A device called the geostationary meteorological satellite that is relatively still standing at 36,000 kilometers above the equator can be observed in nearly 1/3 of the world. Since the early 1970s, China has used its own equipment to receive the polar track of the United States