中文摘要：

卫星测高法广泛地在从空间测量海洋地形学被使用了。常规高度表系统是有一个维的测量的限制并且是不能的得到高时间、空间的分辨率的天底雷达高度表系统。使用 InSAR 高度表而不是天底雷达高度表的 InSAR 测高法系统是能得到高跨轨道的两个和沿着轨道分辨率和宽一行的改进。然而，常规 SAR interferometry 能仅仅完成米水平高度精确性。这篇论文集中于为 InSAR 高度表系统追踪回响的雷达的一个方法以便改正观点范围大小并且最后铺平改进高度测量精确性到几厘米。雷达观点范围(从观察象素到雷达天线) 评价错误糟糕影响高度测量精确性，但没在常规 SAR interferometry 考虑。建议方法基于在天底雷达高度表系统使用的传统的回响模型被改善，集中于从有不同事件角度的观察象素的回响信号。海表面高度大小的模拟在这份报纸的最后部分被执行，并且结论被画那，与改正的观点范围， InSAR 测高法的精确性能比常规 SAR interferometry 好一些。

英文摘要：

Satellite altimetry has been widely used in measuring ocean topography from space. The conventional altimeter system is the nadir radar altimeter system which has the limitations of one-dimensional measurement and is unable to get both high temporal and spatial resolution. The InSAR altimetry system using InSAR altimeter instead of nadir radar altimeter is an improvement which can get both high cross-track and along-track resolution and wide swath. However, the conventional SAR interferometry only can achieve meter level height accuracy. This paper focuses on a method of radar echo-tracking for InSAR altimeter system in order to correct the slant range measurements and finally to improve the height measurement accuracy to several centimeters＇ level. Radar slant range （from observed pixels to radar antenna） estimation error affects the height measurement accuracy badly, nevertheless not considered in the conventional SAR interferometry. The proposed method is ameliorated based on the traditional echo-model used in nadir radar altimeter system, focusing on the echo signals from observed pixels with different incident angles. Simulations of sea surface height measurements are performed in the last part of this paper, and the conclusions are drawn that, with corrected slant range, the accuracy of InSAR altimetry can be much better than the conventional SAR interferometry.