DEM generation in cloudy-rainy mountainous area with multi-baseline SAR interferometry

Hong'an Wu; Yonghong Zhang; Decai Jiang; Yonghui Kang

doi:10.1117/12.2283448

8 March 2018 DEM generation in cloudy-rainy mountainous area with multi-baseline SAR interferometry

Hong'an Wu, Yonghong Zhang, Decai Jiang, Yonghui Kang

Proceedings Volume 10611, MIPPR 2017: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications; 106110A (2018) https://doi.org/10.1117/12.2283448
Event: Tenth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2017), 2017, Xiangyang, China

Abstract

Conventional singe baseline InSAR is easily affected by atmospheric artifacts, making it difficult to generate highprecision DEM. To solve this problem, in this paper, a multi-baseline interferometric phase accumulation method with weights fixed by coherence is proposed to generate higher accuracy DEM. The mountainous area in Kunming, Yunnan Province, China is selected as study area, which is characterized by cloudy weather, rugged terrain and dense vegetation. The multi-baseline InSAR experiments are carried out by use of four ALOS-2 PALSAR-2 images. The generated DEM is evaluated by Chinese Digital Products of Fundamental Geographic Information 1:50000 DEM. The results demonstrate that: 1) the proposed method can reduce atmospheric artifacts significantly; 2) the accuracy of InSAR DEM generated by six interferograms satisfies the standard of 1:50000 DEM Level Three and American DTED-1.

Citation Download Citation

Hong'an Wu, Yonghong Zhang, Decai Jiang, and Yonghui Kang "DEM generation in cloudy-rainy mountainous area with multi-baseline SAR interferometry", Proc. SPIE 10611, MIPPR 2017: Remote Sensing Image Processing, Geographic Information Systems, and Other Applications, 106110A (8 March 2018); https://doi.org/10.1117/12.2283448

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