Detailed Topographic & Thematic Mapping

With the rapid rise of location-based services and applications on handheld devices, accurate mapping solutions are essential enablers. Geospatial data is effectively a consumer product, or at least a crucial component of digital maps that deliver search results for commerce and public services.

Earth observation satellite imagery provides a critical baseline for creating effective thematic mapping solutions for a very diverse range of applications. Much of planet Earth’s surface remains poorly surveyed or inaccurately mapped. Satellites offer high spatial and temporal resolution to rapidly map areas to deliver accurate topography and cartography.

Earth-i assists providers of cartographic agencies, topographers, security analysts and location-based service providers with a range of products and services, including high resolution satellite data, imagery processing and advanced modelling.

- Satellite data for base maps and location services
- Thematic and topographic mapping solutions
- Digital elevation models
- Change detection and monitoring
- Environmental impact assessment

For more information please call us on +44 (0) 333 433 0015 or email us at

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Case Study: Queensland Government

Annual wide-area, very high resolution imagery for an entire State

Full State-wide coverage at less than 1m resolution

In 2016 the State Government of Queensland (Department of Natural Resources and Mines) committed to acquire very high resolution satellite imagery of the entire state on an annual basis. Earth-i was able to demonstrate to the DNRM that full State-wide coverage was now possible at less than 1m resolution.



How does satellite imagery contribute to topographic mapping?

As the accuracy and resolution of satellite data has improved, so has its ability to provide better topographic mapping. This is defined as a map that shows the natural and man-made features on the Earth’s surface. Using multi-spectral data and automatic pattern recognition algorithms, satellite images can delineate vegetation, rivers and lakes, urban developments and a host of different land cover types. Doing this over such a large area makes it an extremely efficient process.

What is a Digital Elevation Model?

Digital Elevation Models (DEM) provide the height information of an area of interest. In combination with a topographic map, this will give the user a remarkable three-dimensional understanding of area of interest. This will also allow for further analysis, including checking the line-of-sight impact of developments and being able to model the flow of water given any changes in the water course.

How do satellites help the construction industry?

Satellite data is a valuable source of information to make better planning and engineering decisions in the construction industry. High resolution satellite data imagery of a project area will provide a base-map for both Geographical Information System (GIS) and CAD systems which are used extensively in the construction industry. Linear infrastructure projects, such as pipelines and railways need satellite imagery for route planning, legal conflict resolution and identification of faults or leaks in the line.