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根据对卫星轨道特征和观测结果的分析，对TOPEX／POSEIDON（简称T／P）星载高度计在我国近海的潮致混淆现象进行了初步研究．分析表明，在浅海区T／P高度计的观测结果存在很强的潮致高频混淆．NASA分发的地球物理记录中所提供的潮汐订正值虽适用于大洋，但不能有效地除去浅海潮汐．虽然如此，T／P潮致混淆的主要频段的周期小于90d，因而可以通过滤波方法提取周期较长的海面高度季节信号，从而用于季节环流（如南海季风环流）的研究．采用FFT／IFFT方法滤波试验的结果显示，T／P的海面高度观测结果有很高的精度，滤波处理后的海面高度距平变化和地面潮位观测结果一致性良好，上、下行轨道交叉处相邻测点间的标准偏差在3cm左右，可满足南海环流研究的需要．
Based on the analysis of satellite orbit characteristics and observation results, the tide-induced confusion of TOPEX / POSEIDON (T / P) spaceborne altimeter in offshore China was studied. The analysis shows that there is a strong tide-induced high-frequency confusion in the observations of the T / P altimeter in the shallow sea. The tide correction values provided in the geophysical records distributed by NASA, although applicable to the oceans, do not effectively remove shallow sea tides. Nevertheless, the T / P tidal confusion of the main frequency band has a period of less than 90 days, so that the longer-period sea level seasonal signal can be extracted by filtering method, which can be used for seasonal circulation (such as the South China Sea monsoon circulation). The results of the FFT / IFFT filtering experiments show that the T / P observations of the sea surface have high precision. The sea level anomalies after filtering are in good agreement with the observed tide observations. The upper and lower orbital intersections The standard deviation between adjacent measuring points is about 3cm, which can meet the needs of the South China Sea circulation research.