Evaluating the Effect of External DEMs on the Accuracy of InSAR DEM Generation

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dc.contributor.authorTorun, Ahmet Tarik
dc.contributor.authorEkercin, Semih
dc.contributor.authorAlganci, Ugur
dc.contributor.authorYilmazturk, Ferruh
dc.date.accessioned2024-02-23T13:59:56Z
dc.date.available2024-02-23T13:59:56Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractIn recent years, the production of digital elevation models (DEMs) by using the interferometric synthetic aperture radar (InSAR) technique has become more useful compared to traditional methods. When DEM production is carried out by using this technique, an external DEM is used in the image processing steps. In this study, new DEMs were produced from an interferometric pair of TerraSAR-X images by using SRTM, ALOSW3D, TANDEM-X and STEREO DEMs with spatial resolutions of 90 m, 30 m, 12 m and 5 m, respectively. In addition, in situ measurements were carried out to collect control points and the accuracy of the obtained products was analyzed. The accuracy of the products obtained by using root mean square error, standard deviation and correlation coefficients were compared. The results obtained in this study demonstrated the effect of external DEMs in the DEM production stage with InSAR pairs and how accuracy increases with better external DEMs. In addition, the effect of the external DEM quality used was shown in the results. It was determined that provided the STEREO DEM reached the highest accuracy with the root mean square error value of 1.52 m. Also, analyzes were made according to different zones. According to the results, it was observed that the statistical errors increased in areas where the slope was steeper. While the RMSE of the rolling zone is 1.17 m, rugged zone is 2.33 m. The analysis results of the other DEMs from high to low quality were TANDEM-X, ALOSW3D and SRTM, respectively. It is thought that the results of this study can help to produce data with the required sensitivity in DEM production.en_US
dc.description.sponsorshipAksaray University Scientific Research Projects Coordination Unit; European Space Agency [39890]en_US
dc.description.sponsorshipThis study was supported by Aksaray University Scientific Research Projects Coordination Unit in 2017-010 and European Space Agency under the project number 39890 entitled Calculation of Snow Depth and Volume from Radar Images; Erciyes Mountain Example.en_US
dc.identifier.doi10.1007/s12524-022-01640-6
dc.identifier.endpage225en_US
dc.identifier.issn0255-660X
dc.identifier.issn0974-3006
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85144669746en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage213en_US
dc.identifier.urihttps://doi.org/10.1007/s12524-022-01640-6
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11382
dc.identifier.volume51en_US
dc.identifier.wosWOS:000903485500001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of The Indian Society Of Remote Sensingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDigital Elevation Modelsen_US
dc.subjectReference Heightsen_US
dc.subjectInsaren_US
dc.titleEvaluating the Effect of External DEMs on the Accuracy of InSAR DEM Generationen_US
dc.typeArticleen_US

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