中文摘要：

通过改进卫星激光测高地面轨迹交叉点高差时间序列算法，利用各期ICESat观测值的交叉点和不同期间交叉点的高差组成高程变化的时间序列，探测东南极恩德比地地区近年来冰盖表面高程变化趋势，得到恩德比地2003～2007年冰盖高程变化趋势为4．79±0．13cm／a。

英文摘要：

In this paper, several techniques were used to improve the arithmetic of satellite laser altimetry ground track crossover elevation change time series, and to construct the elevation change time series using the satellite laser altimeter crossover elevation difference in the single and different laser operation periods of ICESat to detection the trend of ice sheet elevation change in the Enderby Land region of the east Antarctica, the elevation change rate we got is 4.79 0.13cm per year from 2003 to 2007 in this region.