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中文摘要：
利用重心偏移重跟踪算法（OCOG）、阈值法对Jason-2的测高波形数据在中国近海区域进行了重跟踪分析，得到了两个区域经改正的海面高。将OCOG算法以及采用不同阈值的阈值法与法国空间局公布的最大似然估计法进行比较发现，OCOG算法表现较差，采用不同阈值的重跟踪结果也有很大差异，其中采用50％阈值的处理结果最接近最大似然估计法，在黄海和渤海两个区域的标准差分别是3cm和5cm。计算表明地面地理环境是影响波形重跟踪效果的重要因素，对Jason-2卫星而言，在渤海区域的重跟踪效果要差于黄海区域。
英文摘要：
The OCOG and Threshold algorithm are used to retrack the jason - 2 data in the coastal area of China, especially in the Bohai area and Huanghai area. The retraeking results are compared with the Maximum Likelihood Estimate method （MLE） issued by CNES. The comparison shows that OCOG has a worse accuracy, and the results derived from Threshold algorithm which use different threshold values vary significantly. The 50% threshold value has the best accuracy when compared with MLE method, the accuracy are respectively 3era and 5cm in the Huanghai area and Bohai area. The land terrain is the main factor which affects the results of retracking, and the accuracy in the Huanghai area is better than that in the Bohai area for the Jason - 2 wave- form data.
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