摘要： 本文主要讨论了目前INSAR处理过程中几种主要的相位转化高程的技术，并分析对比了这几种方法的处理结果。实验表明，相对于单点的高程计算模型计算的精度更高。

Abstract: This paper discussed some algorithms for converting slant to height in INSAR and implements them; After analyzing the results of the different algorithms, a conclusion was brought out that the result of the model based on a single point was more precise.