A Method for Block Adjustment with Airborne InSAR by Aid of Three Dimensional Reconstruction Model

CHEN Qianfu; HUANG Guoman; YANG Shucheng; HUA Fenfen; LU Lijun

doi:10.13203/j.whugis20141013

Volume 42 Issue 2

Feb. 2017

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Geomatics and Information Science of Wuhan University > 2017 > 42(2): 157-162. > DOI: 10.13203/j.whugis20141013

CHEN Qianfu, HUANG Guoman, YANG Shucheng, HUA Fenfen, LU Lijun. A Method for Block Adjustment with Airborne InSAR by Aid of Three Dimensional Reconstruction Model[J]. Geomatics and Information Science of Wuhan University, 2017, 42(2): 157-162. DOI: 10.13203/j.whugis20141013

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A Method for Block Adjustment with Airborne InSAR by Aid of Three Dimensional Reconstruction Model

1.
Satellite Surveying and Mapping Application Center, NASG, Beijing 100830, China
2.
Chinese Academy of Surveying and Mapping, Beijing 100830, China

Funds:

The Mapping Geographic Information Public Service Industry Research Projects Funded Projects No. 201512022

the National High-tech Research and Development Program of China (863 Program) No. 2011AA120402

the National Basic Surveying and Mapping Scientific Program of National Administration of Surveying, Mapping and Geoinformation No.2016KJ0204

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Author Bio:
CHEN Qianfu, master, specializes in synthetic aperture radar interferometry. E-mail: chenqianfu-114@163.com
Received Date: December 13, 2015
Published Date: February 04, 2017

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Abstract

Abstract

In order to improve the accuracy of DEM (digital elevation model) acquired by airborne InSAR (synthetic aperture radar interferometry), we researched the orthogonal decomposition of visual vector model and three dimensional reconstruction model for airborne InSAR. Error sources and adjustment parameters of domestic airborne InSAR system of CASMSAR (synthetic aperture radar system of Chinese Academy of Surveying and Mapping) were analyzed. A block adjustment method was proposed for airborne InSAR which could be used to derive DEM. An Experiment was carried out with X-band interferometric data acquired by CASMSAR. And we used ground control points to correct this error model. The results show that the proposed algorithm could be used to eliminate the differences in plane and height among multi-strip in the overlapping area. Finally, the results met the requirements of topographic mapping at a scale of 1:10 000, and proved the correctness and effectiveness of the new algorithm with CASMSAR data.

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