InSAR相位解缠算法对分析
摘要合成孔径雷达干涉测量（Interferometric Synthetic Apeurtre Radar, InSAR）技术是一项20世纪90年代逐渐发展起来的先进的遥感技术，可以在大范围、高精度理想条件下监测地球表面发生的形变。相位解缠是InSAR技术中的关键步骤，相位解缠结果直接决定着最终InSAR产品的质量。78215
论文使用Goldstein枝切法、质量引导法、最小范数法、网络流法四种方法，分别选用平原地区和山间地区两种不同地形进行以上方法的应用对比分析，采用MATLAB编程实现。结果显示：枝切法的解缠精度很高并且在平原地区有相当好的效果，质量引导法和最小范数法的解缠精度虽高但是其效率与精度不成正比，消耗的时间较多，网络流法在解缠精度和效率方面相对于其他几种方法表现较优越并且适用于大部分山间地区。
毕业论文关键词：Goldstein枝切法、网络流法、质量引导法、最小范数法。
Abstract Measuring techniques (Interferometric Synthetic Apeurtre Radar ，InSAR)in about 1960, gradually developed advanced remote sensing technology, the deformation monitoring of the earth's surface under the premise of the large scale and high accuracy, can under certain conditions for people to resist natural disasters damage and study the terrain changes。 Phase unwrapping is a key step in the InSAR technology, and the phase unwrapping results directly determine the quality of the final InSAR product。
The use of Goldstein branch cut method, quality guided method, minimum norm method, the network flow method of four methods of plains and mountain areas two different terrain method comparison and application analysis is implemented using the MATLAB software。 The results showed that branch cut method of unwrapping precision is very high and has good effect in the plain area, and the quality guided method of unwrapping accuracy is very high but efficiency is not proportional to the then minimum norm method solution wrapped precision is very high, but time consuming but also many, finally network flow method compared with other methods in accuracy efficiency and cost performance are better and applicable to most of the Intermountain region。
Key words: Goldstein branch cut method, network flow method, quality guidance method, minimum norm method。
目录
摘 要 I
Abstract II
1 绪 论 1
1。3本文主要内容 2
2 SAR基本原理 3
2。1 InSAR干涉原理 3
2。2相位解缠基本原理 4
2。3相位解缠与缠绕 5
3 常用相位解缠算法概述 7
3。1Goldstein枝切法 8
3。2质量引导法 9
3。3最小范数法 10
3。3。1无权最小二乘法 10
3。3。1加权最小二乘法 11
3。4网络流法 11
4 相位解缠比较实验 11
4。1实验数据介绍 11
4。2实验过程 12
4。3实验结果分析 13
5 结论与展望 15