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Digital Elevation Models

DEM

Advanced Elevation Series

From city planning to oil production to flood mapping, many industries require the use of high resolution elevation models to complete projects and tasks. The Advanced Elevation Series produces high accuracy Digital Surface Models and Digital Terrain Models that serve as key building blocks for successful exploration, engineering, land management and simulation. This series offers numerous product configuration options for accuracy, resolution, type, and format. With three options, users can select the product specifications that best fit their project's elevation demand.

WorldView Elevation Suite

Accurate elevation models are key building blocks for successful exploration, engineering, land management, and simulation. The WorldView Elevation Suite provides a full perspective for your project area, bundling a highly accurate digital elevation model (DEM) derived from a WorldView-1 and WorldView-2 stereo pair with ortho-imagery. It offers elevation datasets over rural areas of low vegetation using an innovative geophysical technology similar to 3D seismic processing that provides unprecedented accuracy from a satellite-based DEM

+ Compare Specs — WorldView Elevation Suite — Advanced Elevation Series


Digital Elevation Models Order Parameters
  Advanved Elevation Series (DSM/ DTM) WorldView Elevation Suite
  MAPPING ELEVATION PRODUCT PRECISION ELEVATION PRODUCT VERY HIGH PRECISION ELEVATION PRODUCT
DTM Availablility depending on location of the AOI Availablility depending on location of the AOI Availablility depending on location of the AOI Available over rural areas of low vegetation
DSM yes yes yes no
Resolution (Post-Spacing) 8m, 4m or 2m 4m or 2m 2m 1m
Minimum order size 100 km² 100 km² 100 km² 210 km²
Product Accuracy
Relative Vertical* (LE90) 5 m* 2 m* 1 m* 25-50cm (depending on Ground Control)
Absolute Vertical* (LE90) 8 m* 4 m* 2 m* 1 m
Relative Horizontal (CE90) 8 m 4 m 2 m  
Absolute Horizontal (CE90) 10 m 5 m 3 m 4.1 m
  *The vertical accuracies are based on low to medium relief areas that generally have a slope less than 30%. For rugged areas that have a consistent slope >30%, the values above can be scaled by 1.5  
Processing
  uncontrolled controlled highly controlled highly controlled
GCPs required no yes yes yes
Optional Proccesing Hydro enforcement
Road/linear feature flattening Contour
Shaded reliefContours in shapefile format
Hydro enforcement Road/linear feature flattening Contour Shaded relief Contours in shapefile format Hydro enforcement Road/linear feature flattening Contour Shaded relief Contours in shapefile format 1meter Contours (for other options please contact EUSI)
Deliverables DTM or DSM DTM or DSM DTM or DSM DTM + 50 cm, 1:4800 Orthorectified Imagery + Contours

+ Features — WorldView Elevation Suite

Features & Benefits


Engineering-grade accuracy from space
In leveraging PhotoSat’s innovative geophysical technology, we provide superior quality for a satellite-derived product that is comparable to aerial technologies in detail and accuracy.

Current information
Conduct your operations with recent data using our control or your customer provided high quality GCPs. We’ll work with you to obtain the data within your date specifications to ensure it is as relevant as possible. Utilize our custom tasking capabilities or select imagery from our ImageLibrary.
Global reach
Obtain elevation models for any country in the world without local access challenges, such as permitting or in-country presence. Our worldwide reach allows more efficient mapping of areas where getting a plane in the air or a team on the ground is too costly, time consuming, or unsafe.

+ Features — Advanced Elevation Series

Features & Benefits

Accuracy and Resolution
The Advanced Elevation Series is an accurate, detailed elevation model that allows users to identify features that low-resolution and accuracy elevation models would normally overlook.

Focus on Core Business Functions
With the Advanced Elevation Series, there's no need for specialized hardware, software, or staffing expertise to create and process elevation models, allowing more time for users to focus on core business functions.
Global Access
Now customers can have access to global elevation data without local challenges, such as permitting or in-country presence. DigitalGlobe's worldwide reach enables more efficient mapping of areas where getting a plane in the air or a team on the ground is too costly, time consuming, or unsafe.
One Stop Shop
Bundling DigitalGlobe's Advanced Ortho imagery with the Advanced Elevation Series gives users uniformity in quality and accuracy, as well as reduces vendor management costs.
Optional Processing
DigitalGlobe has developed a number of additional processing options to enhance the Advanced Elevation Series. Whether it's hydro enforcement, road flattening, contours or shaded relief, users can benefit from all of the additional processing their project requires.

+ Specs — Advance Elevation Series

Product Levels
Mapping Elevation Product Precision Elevation Product Very High Precision Elevation Product
Uncontrolled DSM / DTM Controlled DSM / DTM Controlled VHP DSM / DTM

Specifications
Product Accuracy Mapping Precision Very High Precision
Resolution 8 m 4 m 2 m
Relative Vertical 1 (LE90) 5 m 2 m 1 m
Absolute Vertical 1 (LE90) 8 m 4 m 2 m
Relative Horizontal (CE90) 8 m 4 m 2 m
Absolute Horizontal (CE90) 10 m 5 m 3 m

The vertical accuracies are based on low to medium relief areas that generally have a slope less than 30%. For rugged areas that have a consistent slope >30%, the values above can be scaled by 1.5.

+ Delivery

WorldView Elevation Suite is delivered via:

Media Delivery: DVD, External Hard Drive Web-Based Delivery: FTP

Advanced Elevation Series is delivered via:

  • 32-bit signed floating GeoTiff file 
  • ISO 19115 metadata

Media Delivery: External HD
Web-Based Delivery: FTP

Optional Processing:

  • Hydro enforcement 
  • Road/linear feature flattening 
  • Contour 
  • Shaded relief 
  • Contours in shapefile format

+ Downloads

download info sheet Download info sheet


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