摘要
介绍了合成孔径雷达的成像原理,简述了InSAR的测高步骤,重点论述了去平地效应和两种相位解缠算法,最后分别利用分支截断法和最小二乘法两种解缠算法,进行了高斯山模型的解缠绕仿真,并对结果进行了简要的分析。分析结果表明,分支截断解缠绕算法解缠效果较好,基本保持了原始相位的精度。而小二乘法恢复出的相位误差比分支截断严重,但计算率高。
This paper introduces the principle of InSAR imaging and discusses the procedure of measuring height with emphasis on flat removal and two phase unwrapping algorithms,and finally makes simulations of Gauss Hill for both the two algorithms of Branch-cut and Least-squares.Finally it makes a brief analysis of the result.The analysis shows that the Branch-cut phase unwrapping algorithm has better effect and retains the precision of the original phase and that the Least-square algorithm has a worse phase error than the Branch-cut phase unwrapping algorithm but it has higher computation efficiency.
出处
《电子科技》
2012年第3期107-109,共3页
Electronic Science and Technology
