通过对干涉合成孔径雷达（ Ｉｎｔｅｒｆｅｒｏｍ ｅｔｉｃ Ｓ Ａ Ｒ）成像处理中解相位模糊和地形转换问题的研究，给出了一种有效的相位解模糊的方法，该方法具有良好的稳定性和较小的误差，且无误差传递。另外，提出了一种如何将干涉相位转换成地形高度的方法，该方法提高了干涉相位与地形高度之间的转换精度。利用美国 Ｎ Ａ Ｓ Ａ 提供的三峡地区的 Ｌ 波段的 Ｓ Ｉ Ｒ Ｃ的并行轨道数据，结合所提的方法，得到了局部区域的相对高度图。 By studying the problem of phase ambiguity and terrain conversion in the imaging processing of Interferon etic S A R, an effective phase de-blurring method is proposed, which has good stability and small Error, and no error transmission. In addition, a method of how to convert the interferometric phase to a terrain height is proposed, which improves the accuracy of the conversion between the interferometric phase and the terrain height. Using the parallel orbit data of L-band S I R C in the Three Gorges area provided by N A S A in the United States, the relative height map of the local area is obtained in combination with the proposed method.