FUSION OF ASCENDING AND DESCENDING PASS RAW TANDEM-X DEM

被引：12

作者：

Deo, Rinki ^{[1
]}

Rossi, Cristian

Eineder, Michael

Fritz, Thomas

Rao, Y. S. ^{[1
]}

Lachaise, Marie

机构：

[1] Indian Inst Technol, CSRE, Bombay 400076, Maharashtra, India

来源：

2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2014年

关键词：

Fusion; TanDEM-X; Layover; Shadow; optimum weightage; SAR LAYOVER;

D O I：

10.1109/IGARSS.2014.6946345

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper deals with the fusion of TanDEM-X raw DEMs in ascending and descending pass over Mumbai test area and enhance its quality. Before applying fusion method, a robust layover and shadow map has been calculated in ITP using TanDEM-X DEM and the corresponding slant range image. The selection of optimum weights for fusion has been based on height error map calculated from interferometric coherence. Results show a substantial reduction in number of invalid pixels after fusion. In the fused DEM, invalid is only 1.2%, while ascending and descending pass DEMs have 6.7% and 5.7% respectively. The improvement in accuracy of the DEM is very slight in this case which is due to the coarse resolution of the SRTM DEM used as reference.

引用

页数：4

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