Radargrammetry for DEM generation using minimal control points

Hong Gyoo Sohn, Yeong Sun Song, Gi Hong Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The erroneous satellite orbit causes significant distortions to the result of DEM (Digital Elevation Model) generated by radargrammetry. If accurate ephemeris data of satellite are available, satellite orbit parameters can be exactly determined without CPs (control points). If not, it must be refined by using the well defined CPs. For the refinement of orbit parameters, the acquisition of sufficient CPs is the most tedious and time consuming step and obstacle to near real time applications, especially for SAR (Synthetic Aperture Radar) imagery. This paper describes orbit parameters refinement method for radargrammetry using ephemeris data and only a single control point to resolve the CPs problem. The proposed method is applied to RADARSAT-1 SGF images of which ephemeris information is not accurate to directly use for accurate geometric modeling. The RMSE of the DEM generated by using a single CP (Control Point) is 43.86m, while that of the DEM generated by traditional method using 10 CPs is 45.79m in comparison with reference DEM that is generated from 1:5, 000 digital topographic maps.

Original languageEnglish
Title of host publication25th Anniversary IGARSS 2005
Subtitle of host publicationIEEE International Geoscience and Remote Sensing Symposium
Pages1162-1164
Number of pages3
DOIs
Publication statusPublished - 2005 Dec 1
Event2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005 - Seoul, Korea, Republic of
Duration: 2005 Jul 252005 Jul 29

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2

Other

Other2005 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2005
CountryKorea, Republic of
CitySeoul
Period05/7/2505/7/29

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All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

Cite this

Sohn, H. G., Song, Y. S., & Kim, G. H. (2005). Radargrammetry for DEM generation using minimal control points. In 25th Anniversary IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium (pp. 1162-1164). [1525323] (International Geoscience and Remote Sensing Symposium (IGARSS); Vol. 2). https://doi.org/10.1109/IGARSS.2005.1525323