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中文摘要：
首先给出海面高的计算方法，并引入基于高斯滤波的粗差探测方法，有效地剔除了各弧段测高数据存在的粗差。通过对3颗卫星同步运行段测高数据的分析，得到3组数据在中国近海及邻域的平均偏差分别为：Jason-1相对T／P需改正-8．77cm；Jason-2相对Jason-1需改正-7．33cm，两者均小于其在全球海域的改正值。以T／P测高数据所得平均海平面为基础，利用改正后的Jason-1、Jason-2数据，得到该海域18年海平面异常时间序列，海平面平均上升速率约为4．9mm／a。分别对中国近海各海域海平面异常时间序列进行分析，得到渤海、黄海、东海及南海的海平面平均上升速率分别为：2．5mm／a、3．2mm／a、3．6mm／a和6．2mm／a。将所得每周期离散正常点的观测数据格网化，然后逐格网计算海平面异常时间序列，得到研究海域18年来海平面异常平均上升速率的分布情况。结果表明，研究海域海平面上升速率高于全球平均水平。
英文摘要：
The method of sea surface height（SSH） computation is introduced. And an operative outlier detecting method using Gauss filter is applied in order to reject the outliers near the offshore. Then the satellite altimetric data of T/P, Jason-1 and the newest Jason-2 during formation flight phase are analyzed. The comparatively correction is-8.77 cm between Jason-1 and T/P, and-7.33 cm between Jason-2 and Jason-1, respectively, both are smaller than that of global. Based on theT/P mean sea surface height and the corrected Jason-1 and Jason-2 data, ]8 years＇ SLA time series are obtained and analyzed. In China sea and its vicinity, the average rising rate of the sea surface height is about 4.9rnm/a. And in regional areas, the average rising rates are 2. Smm/a, 3.2mm/a, 3.6mm/a and 6.2 mm/a in Bohai, Yellow Sea, East China Sea and South China Sea, respectively. The discrete sea surface height at normal points are gridded using the Shepard gridding method. The SLA time series are computed grid by grid to study the average rising rate in regional areas. It shows that the sea level rising rate in this area is higher than the global one.
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Derivation of the radial gradient of the gravity based on non-full tensor satellite gravity gradient
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