Vertical accuracy evaluation of SRTM-GL1, GDEM-V2, AW3D30 and CartoDEM-V3.1 of 30-m resolution with dual frequency GNSS for lower Tapi Basin India

Jain, Akshay Omprakash; Thaker, T. P.; Chaurasia, Ashish; Patel, Parth; Singh, A. K.

doi:10.1080/10106049.2017.1343392

Cited by 55 publications

(34 citation statements)

References 81 publications

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“…Several studies directly compared the performance of different global elevation models in various geographical settings. The accuracy of the 30 m resolution DEMs from SRTM, ASTER Global DEM and ALOS W3D was assessed by many studies [49][50][51][52][53][54]. They indicate a slightly higher accuracy of ALOS W3D in comparison to SRTM and ASTER GDEM.…”

Section: Introductionmentioning

confidence: 99%

A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile

Kramm

Hoffmeister

2019

IJGI

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Many geoscientific computations are directly influenced by the resolution and accuracy of digital elevation models (DEMs). Therefore, knowledge about the accuracy of DEMs is essential to avoid misleading results. In this study, a comprehensive evaluation of the vertical accuracy of globally available DEMs from Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Shuttle Radar Topography Mission (SRTM), Advanced Land Observing Satellite (ALOS) World 3D and TanDEM-X WorldDEM™ was conducted for a large region in Northern Chile. Additionally, several very high-resolution DEM datasets were derived from Satellite Pour l’Observation de la Terre (SPOT) 6/7 and Pléiades stereo satellite imagery for smaller areas. All datasets were evaluated with three reference datasets, namely elevation points from both Ice, Cloud, and land Elevation (ICESat) satellites, as well as very accurate high-resolution elevation data derived by unmanned aerial vehicle (UAV)-based photogrammetry and terrestrial laser scanning (TLS). The accuracy was also evaluated with regard to the existing relief by relating the accuracy results to slope, terrain ruggedness index (TRI) and topographic position index (TPI). For all datasets with global availability, the highest overall accuracies are reached by TanDEM-X WorldDEM™ and the lowest by ASTER Global DEM (GDEM). On the local scale, Pléiades DEMs showed a slightly higher accuracy as SPOT imagery. Generally, accuracy highly depends on topography and the error is rising up to four times for high resolution DEMs and up to eight times for low-resolution DEMs in steeply sloped terrain compared to flat landscapes.

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Section: Introductionmentioning

confidence: 99%

A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile

Kramm

Hoffmeister

2019

IJGI

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“…For high accuracy in the orthorectification process, a very accurate DEM or imagery with the smallest possible off‐nadir angle should be used. Similarly, the highest accuracy and precision of these global DEMs was obtained with AW3D30, then SRTM and the lowest accuracy was obtained from ASTER (Bayburt et al., ; Jain et al., ; Purinton and Bookhagen, ).…”

Section: Discussionmentioning

confidence: 96%

“…There have been studies on this research topic in the past, and even studies comparing geometric improvements of the VHRSI using various DEMs (Bayburt et al., ; Jain et al., ; Purinton and Bookhagen, ; Gašparović et al., ). However, none of this previous research tested the accuracy for single‐image processing of WV2 ORS2A imagery based on commonly used and freely available global DEMs.…”

Section: Discussionmentioning

confidence: 99%

“…Jain et al. () researched the accuracy of these DEMs using precisely measured (about 1 cm accuracy) ground control points (GCPs), and the root mean square error (RMSE) for AW3D30, ASTER and SRTM were 2·45, 5·46 and 2·88 m, respectively. In other research (Bayburt et al., ; Purinton and Bookhagen, ) which investigated the accuracy and precision of these three global DEMs, the highest accuracy was obtained with AW3D30; the lowest accuracy was obtained with the ASTER DEM.…”

Section: Introductionmentioning

confidence: 99%

“…The accuracy of the geometric improvement for a single satellite image was calculated based on the large set of high‐quality GCPs, which is a great improvement compared to previous similar research (Cheng and Chaapel, ; Åstrand et al., ; Aguilar et al., ). Several authors (Bayburt et al., ; Jain et al., ; Purinton and Bookhagen, ; Gašparović et al., ) have investigated geometric improvements of VHRSI based on various DEMs, but none of this research compared the accuracy of VHRSI geometric improvement based on commonly used and freely available global DEMs.…”

Section: Introductionmentioning

confidence: 99%

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Geometric accuracy improvement of WorldView‐2 imagery using freely available DEM data

Gašparović

Dobrinić

Medak

2019

The Photogrammetric Record

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This paper provides geometric accuracy improvements for very high resolution WorldView-2 (WV2) Ortho Ready Standard Level-2A (ORS2A) satellite images in the panchromatic (PAN) band. The entire process can be divided into two steps: (1) sensor orientation, which was conducted on 40 ground control points (GCPs) to determine which sensor model was best depending on various numbers of GCPs; and (2) orthorectification, whose main objective was to compare the accuracy of the process when using different freely available global digital elevation models (DEMs). The research showed that a sensor model based on rational polynomial coefficients (RPCs) with a shift or zero-order bias correction attained the best geopositioning accuracy during the orientation step with the use of seven GCPs. The highest accuracy was achieved for images orthorectified with the ALOS World 3D-30 m DEM (AW3D30).

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Redeveloping Open and Urban Green Spaces for Climate Resilience; A Case Study of Chennai

Govindarajulu,

García Sánchez,

Chaudhry

2024

Blue-Green Infrastructure for Sustainable Urban Settlements

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Vertical accuracy evaluation of SRTM-GL1, GDEM-V2, AW3D30 and CartoDEM-V3.1 of 30-m resolution with dual frequency GNSS for lower Tapi Basin India

Cited by 55 publications

References 81 publications

A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile

A Relief Dependent Evaluation of Digital Elevation Models on Different Scales for Northern Chile

Geometric accuracy improvement of WorldView‐2 imagery using freely available DEM data

Redeveloping Open and Urban Green Spaces for Climate Resilience; A Case Study of Chennai

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