Block adjustment of airborne InSAR based on interferogram phase and POS data

Xijuan Yue; Yinghui Zhao; Chunming Han; Changyong Dou

doi:10.1117/12.2207606

9 December 2015 Block adjustment of airborne InSAR based on interferogram phase and POS data

Xijuan Yue, Yinghui Zhao, Chunming Han, Changyong Dou

Proceedings Volume 9808, International Conference on Intelligent Earth Observing and Applications 2015; 98080H (2015) https://doi.org/10.1117/12.2207606
Event: International Conference on Intelligent Earth Observing and Applications, 2015, Guilin, China

Abstract

High-precision surface elevation information in large scale can be obtained efficiently by airborne Interferomatric Synthetic Aperture Radar (InSAR) system, which is recently becoming an important tool to acquire remote sensing data and perform mapping applications in the area where surveying and mapping is difficult to be accomplished by spaceborne satellite or field working. . Based on the study of the three-dimensional (3D) positioning model using interferogram phase and Position and Orientation System (POS) data and block adjustment error model, a block adjustment method to produce seamless wide-area mosaic product generated from airborne InSAR data is proposed in this paper. The effect of 6 parameters, including trajectory and attitude of the aircraft, baseline length and incline angle, slant range, and interferometric phase, on the 3D positioning accuracy is quantitatively analyzed. Using the data acquired in the field campaign conducted in Mianyang county Sichuan province, China in June 2011, a mosaic seamless Digital Elevation Model (DEM) product was generated from 76 images in 4 flight strips by the proposed block adjustment model. The residuals of ground control points (GCPs), the absolute positioning accuracy of check points (CPs) and the relative positioning accuracy of tie points (TPs) both in same and adjacent strips were assessed. The experimental results suggest that the DEM and Digital Orthophoto Map (DOM) product generated by the airborne InSAR data with sparse GCPs can meet mapping accuracy requirement at scale of 1:10 000.

Citation Download Citation

Xijuan Yue, Yinghui Zhao, Chunming Han, and Changyong Dou "Block adjustment of airborne InSAR based on interferogram phase and POS data", Proc. SPIE 9808, International Conference on Intelligent Earth Observing and Applications 2015, 98080H (9 December 2015); https://doi.org/10.1117/12.2207606

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KEYWORDS

3D modeling

Interferometric synthetic aperture radar

Data modeling

Synthetic aperture radar

Antennas

Associative arrays

Interferometry

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