8 datasets found
  1. o

    High-resolution Topography of Sertengshan Piedmont Fault, Northern China

    • opentopography.org
    • catalog.data.gov
    raster
    Updated Aug 16, 2022
    + more versions
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    OpenTopography (2022). High-resolution Topography of Sertengshan Piedmont Fault, Northern China [Dataset]. http://doi.org/10.5069/G92F7KN7
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    rasterAvailable download formats
    Dataset updated
    Aug 16, 2022
    Dataset provided by
    OpenTopography
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Time period covered
    Aug 1, 2019 - Aug 31, 2019
    Area covered
    Variables measured
    Area, PointDensity
    Description

    This dataset comprises a 1-m-resolution digital elevation model (DEM) of the Sertengshan Piedmont Fault in Northern China acquired by an airborne LiDAR survey. The LiDAR data were collected by the Aerospace ShuWei Company in Beijing, China in August 2019, using a Riegl VUX-1LR airborne LiDAR system mounted on a DM-150W fixed-wing unmanned aerial vehicle (UAV). The LiDAR data cover about a 1-km-wide swath along ~185 km section of the Sertengshan Piedmont Fault. The average point density is higher than 4 points/m2 and as high as 10 points/m2 in some local areas. The vertical accuracy of the LiDAR data is demonstrated to be better than 10 cm.

  2. Hong Kong Digital Terrain Model from 2010 LiDAR Survey (5m grid)

    • opendata.esrichina.hk
    • hub.arcgis.com
    Updated Jul 27, 2022
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    Esri China (Hong Kong) Ltd. (2022). Hong Kong Digital Terrain Model from 2010 LiDAR Survey (5m grid) [Dataset]. https://opendata.esrichina.hk/maps/5f6632a16f344941a5a0c68bc88b688e
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    Dataset updated
    Jul 27, 2022
    Dataset provided by
    Esrihttp://esri.com/
    Authors
    Esri China (Hong Kong) Ltd.
    Area covered
    Description

    This scene shows the Digital Terrain Model of Hong Kong from 2010 LiDAR Survey. It is a set of data made available by the Civil Engineering and Development Department under the Government of Hong Kong Special Administrative Region (the "Government") at https://GEODATA.GOV.HK/ ("Hong Kong Geodata Store"). The source data is in GML format and has been processed and converted into Esri File Geodatabase format and uploaded to Esri's ArcGIS Online platform for sharing and reference purpose. The objectives are to facilitate our Hong Kong ArcGIS Online users to use the data in a spatial ready format and save their data conversion effort.For details about the data, source format and terms of conditions of usage, please refer to the website of Hong Kong Geodata Store at https://geodata.gov.hk/.

  3. d

    DEM, DSM, and Cleaned LiDAR Point Cloud Data from the NGEE Arctic UAS...

    • search.dataone.org
    • osti.gov
    Updated Jul 24, 2024
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    Shannon Dillard; Adam Collins; Julian Dann; Christian Andresen; Emma Lathrop; Erika Swanson; Lauren Charsley-Groffman (2024). DEM, DSM, and Cleaned LiDAR Point Cloud Data from the NGEE Arctic UAS Campaigns at the Teller 27 Field Site from 2017 and 2018, Seward Peninsula, Alaska [Dataset]. http://doi.org/10.5440/2217322
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    Dataset updated
    Jul 24, 2024
    Dataset provided by
    ESS-DIVE
    Authors
    Shannon Dillard; Adam Collins; Julian Dann; Christian Andresen; Emma Lathrop; Erika Swanson; Lauren Charsley-Groffman
    Time period covered
    Aug 19, 2017 - Jul 16, 2018
    Area covered
    Description

    A Digital Elevation Model (DEM) and Digital Surface Model (DSM) were derived from airborne Light Detection and Ranging (LiDAR) data collected from Los Alamos National Laboratory's (LANL) heavy-lift unoccupied aerial system (UAS) quadcopter and hexacopter platforms operated by Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic) scientists from the EES-14 group at LANL. These data were collected in August 2017 and July 2018 at the NGEE Arctic field site near mile marker 27 of the Bob Blodgett Nome-Teller Memorial Highway between Nome, Alaska and Teller, Alaska. A Vulcan Raven X8 Airframe (Mitcheldean, Gloucestershire, UK), DJI Matrice 600 Pro Airframe (Shenzhen, China), and Routescene UAV LiDARSystem (Edinburgh, Scotland, UK) were used to collect LiDAR data. Following pre-processing in Routescene LidarViewer Pro software, the LiDAR point clouds were cleaned and processed using CloudCompare software to separate ground and off-ground points. A high resolution DEM and DSM were then created using ArcGIS Pro software. This data package contains fully cleaned point clouds of ground and off-ground points (.las), a 25 cm DEM (.tif), and a 25 cm DSM (.tif) for the Teller 27 field site. Ancillary aircraft data, flight mission parameters, weather conditions, and raw lidar data and imagery can be found in the L0 datasets for these campaigns: NGA299 (2017) and NGA297 (2018). Minimally processed point clouds and auxiliary files can be found in the L1 dataset: NGA304 (2017 and 2018). The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a 15-year research effort (2012-2027) to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy's Office of Biological and Environmental Research. The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska. Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy's Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).

  4. f

    Table 1_Accuracy assessment of topography and forest canopy height in...

    • figshare.com
    docx
    Updated Mar 20, 2025
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    Lianjin Fu; Qingtai Shu; Zhengdao Yang; Cuifen Xia; Xiao Zhang; Yiran Zhang; Zeyu Li; Shengjiao Li (2025). Table 1_Accuracy assessment of topography and forest canopy height in complex terrain conditions of Southern China using ICESat-2 and GEDI data.docx [Dataset]. http://doi.org/10.3389/fpls.2025.1547688.s001
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    docxAvailable download formats
    Dataset updated
    Mar 20, 2025
    Dataset provided by
    Frontiers
    Authors
    Lianjin Fu; Qingtai Shu; Zhengdao Yang; Cuifen Xia; Xiao Zhang; Yiran Zhang; Zeyu Li; Shengjiao Li
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    ICESat-2 and GEDI offer unique capabilities for terrain and canopy height retrievals; however, their performance and measurement precision are significantly affected by terrain conditions. Furthermore, differences in data scales complicate direct comparisons of their measurement capabilities. This study evaluates the accuracy of terrain and canopy height retrievals from ICESat-2 and GEDI LiDAR data in complex terrain environments. Jinghong City and Pu’er City in Southwest China were selected as study areas, with high-precision airborne LiDAR data serving as a reference. Ground elevation and canopy height retrieval accuracies were compared before and after scale unification to 30 m × 30 m under varying slope conditions. Results indicate that ICESat-2 shows a significant advantage in terrain height retrieval, with RMSE values of 4.75 m and 4.21 m before and after scale unification, respectively. In comparison, GEDI achieved RMSE values of 4.94 m and 4.96 m. Both systems maintain high accuracy in flat regions, but accuracy declines with increasing slope. For canopy height retrieval, GEDI outperforms ICESat-2. Before scale unification, GEDI achieved an R² of 0.73 with an RMSE of 5.15 m, and after scale unification, an R² of 0.67 with an RMSE of 5.32 m. In contrast, ICESat-2 showed lower performance, with an R² of 0.65 and RMSE of 7.42 m before unification, and an R² of 0.53 with RMSE of 8.29 m after unification. GEDI maintains higher canopy height accuracy across all slope levels. Post-scale unification, both systems show high accuracy in ground elevation retrieval, with ICESat-2 being superior. In contrast, GEDI achieves better canopy height retrieval accuracy. These findings highlight the synergistic strengths of ICESat-2’s photon-counting and GEDI’s full-waveform LiDAR techniques, demonstrating advancements in satellite laser altimetry for terrain and canopy height retrieval.

  5. Hong Kong Digital Terrain Model from 2010 LiDAR Survey (By Tile)

    • hub.arcgis.com
    • opendata.esrichina.hk
    Updated Jun 13, 2022
    + more versions
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    Esri China (Hong Kong) Ltd. (2022). Hong Kong Digital Terrain Model from 2010 LiDAR Survey (By Tile) [Dataset]. https://hub.arcgis.com/maps/85ac57ba5d49440ebb956abefe3546ff
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    Dataset updated
    Jun 13, 2022
    Dataset provided by
    Esrihttp://esri.com/
    Authors
    Esri China (Hong Kong) Ltd.
    Area covered
    Description

    This layer shows the URL link to Digital Terrain Model from 2010 LiDAR Survey in Hong Kong by tile. It is a set of data made available by the Civil Engineering and Development Department under the Government of Hong Kong Special Administrative Region (the "Government") at https://GEODATA.GOV.HK/ ("Hong Kong Geodata Store"). The source data is in GML format and has been processed and converted into Esri File Geodatabase format and uploaded to Esri's ArcGIS Online platform for sharing and reference purpose. The objectives are to facilitate our Hong Kong ArcGIS Online users to use the data in a spatial ready format and save their data conversion effort.For details about the data, source format and terms of conditions of usage, please refer to the website of Hong Kong Geodata Store at https://geodata.gov.hk/.

  6. Data from: Assessing the effect of ensemble learning algorithms and...

    • figshare.com
    tiff
    Updated May 9, 2023
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    Zhen Zhen (2023). Assessing the effect of ensemble learning algorithms and validation approach on estimating forest aboveground biomass: A case study of natural secondary forest in Northeast China [Dataset]. http://doi.org/10.6084/m9.figshare.22783292.v2
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    tiffAvailable download formats
    Dataset updated
    May 9, 2023
    Dataset provided by
    Figsharehttp://figshare.com/
    Authors
    Zhen Zhen
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Northeast China
    Description

    Landsat 8 OLI imagery (path/row: 117/28) processed to L1T level was acquired on September 13, 2015 (LC81170282015256LGN01). The preprocessing of Landsat 8 OLI imagery data includes three steps: radiometric calibration, atmospheric correction and topographic correction. The Fast Line-of-Sight Atmospheric Analysis of Spectral Hypercube (FLAASH) radiative transfer model was employed for atmospheric correction (Safari et al. 2017). The topographic correction was performed using the well-known Sun Canopy Sensor + C correction (SCS + C) approach provided by extension tool of “Topographic Correction V5.3 4 S1”.

  7. GIS Market Analysis North America, Europe, APAC, South America, Middle East...

    • technavio.com
    Updated Feb 15, 2025
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    Technavio (2025). GIS Market Analysis North America, Europe, APAC, South America, Middle East and Africa - US, China, Germany, UK, Canada, Brazil, Japan, France, South Korea, UAE - Size and Forecast 2025-2029 [Dataset]. https://www.technavio.com/report/gis-market-industry-analysis
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    Dataset updated
    Feb 15, 2025
    Dataset provided by
    TechNavio
    Authors
    Technavio
    Time period covered
    2021 - 2025
    Area covered
    United Kingdom, France, United States, South Korea, Germany, United Arab Emirates, Brazil, Canada, North America, Global
    Description

    Snapshot img

    GIS Market Size 2025-2029

    The GIS market size is forecast to increase by USD 24.07 billion, at a CAGR of 20.3% between 2024 and 2029.

    The Global Geographic Information System (GIS) market is experiencing significant growth, driven by the increasing integration of Building Information Modeling (BIM) and GIS technologies. This convergence enables more effective spatial analysis and decision-making in various industries, particularly in soil and water management. However, the market faces challenges, including the lack of comprehensive planning and preparation leading to implementation failures of GIS solutions. Companies must address these challenges by investing in thorough project planning and collaboration between GIS and BIM teams to ensure successful implementation and maximize the potential benefits of these advanced technologies.
    By focusing on strategic planning and effective implementation, organizations can capitalize on the opportunities presented by the growing adoption of GIS and BIM technologies, ultimately driving operational efficiency and innovation.
    

    What will be the Size of the GIS Market during the forecast period?

    Explore in-depth regional segment analysis with market size data - historical 2019-2023 and forecasts 2025-2029 - in the full report.
    Request Free Sample

    The global Geographic Information Systems (GIS) market continues to evolve, driven by the increasing demand for advanced spatial data analysis and management solutions. GIS technology is finding applications across various sectors, including natural resource management, urban planning, and infrastructure management. The integration of Bing Maps, terrain analysis, vector data, Lidar data, and Geographic Information Systems enables precise spatial data analysis and modeling. Hydrological modeling, spatial statistics, spatial indexing, and route optimization are essential components of GIS, providing valuable insights for sectors such as public safety, transportation planning, and precision agriculture. Location-based services and data visualization further enhance the utility of GIS, enabling real-time mapping and spatial analysis.

    The ongoing development of OGC standards, spatial data infrastructure, and mapping APIs continues to expand the capabilities of GIS, making it an indispensable tool for managing and analyzing geospatial data. The continuous unfolding of market activities and evolving patterns in the market reflect the dynamic nature of this technology and its applications.

    How is this GIS Industry segmented?

    The GIS industry research report provides comprehensive data (region-wise segment analysis), with forecasts and estimates in 'USD million' for the period 2025-2029, as well as historical data from 2019-2023 for the following segments.

    Product
    
      Software
      Data
      Services
    
    
    Type
    
      Telematics and navigation
      Mapping
      Surveying
      Location-based services
    
    
    Device
    
      Desktop
      Mobile
    
    
    Geography
    
      North America
    
        US
        Canada
    
    
      Europe
    
        France
        Germany
        UK
    
    
      Middle East and Africa
    
        UAE
    
    
      APAC
    
        China
        Japan
        South Korea
    
    
      South America
    
        Brazil
    
    
      Rest of World (ROW)
    

    By Product Insights

    The software segment is estimated to witness significant growth during the forecast period.

    The Global Geographic Information System (GIS) market encompasses a range of applications and technologies, including raster data, urban planning, geospatial data, geocoding APIs, GIS services, routing APIs, aerial photography, satellite imagery, GIS software, geospatial analytics, public safety, field data collection, transportation planning, precision agriculture, OGC standards, location intelligence, remote sensing, asset management, network analysis, spatial analysis, infrastructure management, spatial data standards, disaster management, environmental monitoring, spatial modeling, coordinate systems, spatial overlay, real-time mapping, mapping APIs, spatial join, mapping applications, smart cities, spatial data infrastructure, map projections, spatial databases, natural resource management, Bing Maps, terrain analysis, vector data, Lidar data, and geographic information systems.

    The software segment includes desktop, mobile, cloud, and server solutions. Open-source GIS software, with its industry-specific offerings, poses a challenge to the market, while the adoption of cloud-based GIS software represents an emerging trend. However, the lack of standardization and interoperability issues hinder the widespread adoption of cloud-based solutions. Applications in sectors like public safety, transportation planning, and precision agriculture are driving market growth. Additionally, advancements in technologies like remote sensing, spatial modeling, and real-time mapping are expanding the market's scope.

    Request Free Sample

    The Software segment was valued at USD 5.06 billion in 2019

  8. T

    Antarctic ice sheet surface elevation data (2003-2009)

    • data.tpdc.ac.cn
    • tpdc.ac.cn
    • +1more
    zip
    Updated Feb 14, 2018
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    Huabin HUANG (2018). Antarctic ice sheet surface elevation data (2003-2009) [Dataset]. http://doi.org/10.11888/Glacio.tpdc.270891
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    zipAvailable download formats
    Dataset updated
    Feb 14, 2018
    Dataset provided by
    TPDC
    Authors
    Huabin HUANG
    Area covered
    南极洲,
    Description

    The Antarctic ice sheet elevation data were generated from radar altimeter data (Envisat RA-2) and lidar data (ICESat/GLAS). To improve the accuracy of the ICESat/GLAS data, five different quality control indicators were used to process the GLAS data, filtering out 8.36% unqualified data. These five quality control indicators were used to eliminate satellite location error, atmospheric forward scattering, saturation and cloud effects. At the same time, dry and wet tropospheric, correction, solid tide and extreme tide corrections were performed on the Envisat RA-2 data. For the two different elevation data, an elevation relative correction method based on the geometric intersection of Envisat RA-2 and GLAS data spot footprints was proposed, which was used to analyze the point pairs of GLAS footprints and Envisat RA-2 data center points, establish the correlation between the height difference of these intersection points (GLAS-RA-2) and the roughness of the terrain relief, and perform the relative correction of the Envisat RA-2 data to the point pairs with stable correlation. By analyzing the altimetry density in different areas of the Antarctic ice sheet, the final DEM resolution was determined to be 1000 meters. Considering the differences between the Prydz Bay and the inland regions of the Antarctic, the Antarctic ice sheet was divided into 16 sections. The best interpolation model and parameters were determined by semivariogram analysis, and the Antarctic ice sheet elevation data with a resolution of 1000 meters were generated by the Kriging interpolation method. The new Antarctic DEM was verified by two kinds of airborne lidar data and GPS data measured by multiple Antarctic expeditions of China. The results showed that the differences between the new DEM and the measured data ranged from 3.21 to 27.84 meters, and the error distribution was closely related to the slope.

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    Learn how you can add new datasets to our index.

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OpenTopography (2022). High-resolution Topography of Sertengshan Piedmont Fault, Northern China [Dataset]. http://doi.org/10.5069/G92F7KN7

High-resolution Topography of Sertengshan Piedmont Fault, Northern China

Explore at:
rasterAvailable download formats
Dataset updated
Aug 16, 2022
Dataset provided by
OpenTopography
License

Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
License information was derived automatically

Time period covered
Aug 1, 2019 - Aug 31, 2019
Area covered
Variables measured
Area, PointDensity
Description

This dataset comprises a 1-m-resolution digital elevation model (DEM) of the Sertengshan Piedmont Fault in Northern China acquired by an airborne LiDAR survey. The LiDAR data were collected by the Aerospace ShuWei Company in Beijing, China in August 2019, using a Riegl VUX-1LR airborne LiDAR system mounted on a DM-150W fixed-wing unmanned aerial vehicle (UAV). The LiDAR data cover about a 1-km-wide swath along ~185 km section of the Sertengshan Piedmont Fault. The average point density is higher than 4 points/m2 and as high as 10 points/m2 in some local areas. The vertical accuracy of the LiDAR data is demonstrated to be better than 10 cm.

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