中文摘要：

利用13年T/P雷达高度计观测的后向散射信息,获取了格陵兰冰盖、亚马逊河及刚果热带雨林地区、塔克拉玛干沙荒漠、非洲利比亚Ubari-Murzuq沙海地区、俄罗斯西伯利亚草原及北美北达科他州温带草原地区的地表后向散射时间序列。根据Ku波段和C波段观测信息,探讨雷达高度计后向散射与地表覆盖物及气候环境变化的关系。

英文摘要：

By use of the Topex/Poseidon radar altimeter data for 13 years, the time series of baekscatter coefficient of Greenland ice sheet, the Amazon basin tropical forest and Congo tropical forest, Takla-Makan desert and Ubari-Murzuq sand sea in Libya, Siberian steppe and North Dakota temperate grassland are discussed. It is found that the time series of Ku and C wave bands and its difference reflect the relations between surface covering, climatic environment and backscatter coefficient.