利用机载双天线毫米波InSAR生成四川高山区DOM及DSM

doi:10.13474/j.cnki.11-2246.2020.0314

测绘通报 ›› 2020, Vol. 0 ›› Issue (10): 31-37.doi: 10.13474/j.cnki.11-2246.2020.0314

利用机载双天线毫米波InSAR生成四川高山区DOM及DSM

李永杰¹, 孙中昶^2,3, 韦立登⁴, 高建⁵, 杨红磊¹

1. 中国地质大学, 北京 100083;
2. 中国科学院空天信息创新研究院, 北京 100094;
3. 海南省地球观测重点实验室, 海南三亚 572029;
4. 北京无线电测量研究所, 北京 100854;
5. 南京邮电大学, 江苏南京 210003

收稿日期:2019-12-06 出版日期:2020-10-25 发布日期:2020-10-29
通讯作者: 杨红磊。E-mail:yanghonglei226@126.com E-mail:yanghonglei226@126.com
作者简介:李永杰(1994-),男,硕士,研究方向为机载InSAR数据处理。E-mail:1137005991@qq.com

DOM and DSM generation using airborne dual-antenna millimeter-wave InSAR in high mountain area of Sichuan

LI Yongjie¹, SUN Zhongchang^2,3, WEI Lideng⁴, GAO Jian⁵, YANG Honglei¹

1. China University of Geosciences, Beijing 100083, China;
2. Aerospace Information Research Institute, Chinese Academy of Science, Beijing 100094, China;
3. Key Laboratory of Earth Observation of Hainan Province, Sanya 572029, China;
4. Beijing Institute of Radio Measurement, Beijing 100854, China;
5. Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Received:2019-12-06 Online:2020-10-25 Published:2020-10-29

摘要/Abstract

摘要： 机载双天线毫米波InSAR系统具有机动灵活、轨道可变、相干性高、分辨率高、实时获取等特点，可以快速、高效、精确地获取地势陡峭、地形复杂的困难山区地带的DSM，已成为获取DSM的重要手段之一。但由于机载InSAR数据量很大，当前的数据处理能力和效率相对较低，针对这些问题，本文采用图形处理器（GPU）并行处理技术，快速、精确地进行干涉处理，提高了干涉批处理效率；采用最小平衡树的解缠算法，快速地进行相位解缠；采用尺度不变特征变换（SIFT）算法自动、快速提取条带内相邻影像之间的连接点，提高了连接点选取的精度和效率。本文选取四川省邛崃市西部高山区地带13景机载InSAR数据进行分析，生成的DOM、DSM在X、Y、H 3个方向的RMSE分别为1.839、1.464、1.997 m，满足1：5000地形图测绘需求。

关键词: 机载InSAR, 毫米波, 高山区, 数字正射影像图, 数字表面模型

Abstract: The airborne dual-antenna millimeter-wave InSAR system is able to acquire DSM over difficult mountainous areas with steep or complicated topography efficiently and accurately for its flexible maneuverability, variable track, high coherence, high resolution, real-time acquisition, et al, which is one of the significant means for obtaining DSM. However, due to the large amount of airborne InSAR data, the current data processing capability and efficiency are relatively low. In response to these problems, the GPU parallel processing technology is adopted in this paper to carry out interference processing quickly and accurately, thus improving the efficiency of batch interference processing. The phase unwrapping is performed quickly based on the minimum balanced trees unwrapping algorithm. The SIFT algorithm is used to extract the tie points between adjacent images in the strip automatically and quickly, which improves the accuracy and efficiency of tie points selection.In this paper, 13 scenes of airborne InSAR data in the high mountainous area of Qionglai city, Sichuan province are taken as examples for analysis. The RMSE of the generated DOM and DSM in the three directions of X, Y and H are 1.839, 1.464 and 1.997 m respectively, which satisfies requirements of 1：5000 topographic mapping.

Key words: airborne InSAR, millimeter-wave, mountain area, DOM, DSM

中图分类号:

P237

李永杰, 孙中昶, 韦立登, 高建, 杨红磊. 利用机载双天线毫米波InSAR生成四川高山区DOM及DSM[J]. 测绘通报, 2020, 0(10): 31-37.

LI Yongjie, SUN Zhongchang, WEI Lideng, GAO Jian, YANG Honglei. DOM and DSM generation using airborne dual-antenna millimeter-wave InSAR in high mountain area of Sichuan[J]. Bulletin of Surveying and Mapping, 2020, 0(10): 31-37.

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利用机载双天线毫米波InSAR生成四川高山区DOM及DSM

DOM and DSM generation using airborne dual-antenna millimeter-wave InSAR in high mountain area of Sichuan

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