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中文摘要：
综合对比4种波形重跟踪算法,选择改进阈值法处理Jason-1GM数据,联合波形重跟踪后的Geosat和ERS-1GM数据,沿轨2Hz重采样以提高数据空间分辨率。通过数据质量控制剔除粗差数据,考虑海表面地形的影响,基于移去-恢复法和维宁-曼齐兹公式反演了中国近海及邻近海域（0°～45°N,100°～140°E）1′×1′的精细重力场。船测数据检核表明反演结果在开阔海域精度约4mGal,近岸浅水区约10mGal,均优于DTU10和V21.1模型。
英文摘要：
The advanced threshold method was selected for processing the Jason-1 geodetic mission waveform data based on the comparative analysis of four waveform retracking methods. Combined with the retracked ERS-1 and Geosat geodetic mission data, the along-track data were resampled at 2Hz to improve the spatial resolution of coast- al areas. Considering the influence of sea surface topography after the data quality control process,a refined 1′×1′ resolution gravity field of the China sea and its adjacent sea areas（0°～45°N, 100°～ 140°E） was obtained by remove restore method and Vening-Meinesz formula. The validation with shipborne data showed that the accuracy of in- version result is about 4 mGal and 10 mGal in open seas and shallow water areas, respectively. Moreover, the inver- sion result is better than both of the DTU10 model and the V21.1 model.
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