Our maps are tailored to the user requirements, tested for consistency, accuracy and precision to serve our clients as best intended. We use Field (survey) data, remotely sensed data (aerial photos and satellite imagery), Google earth and existing data to create maps of virtually anything. With current technology we can map even uncertainty, map in three dimensions and map in two dimensions, for objects on below or above the earth surface. Such technology includes GIS (Geographic Information System), which refers to a computer based system involving hardware software people data and organizational procedures. This increases the usability of our products in the market as we consider all aspects of life. Laser mapping is now widely applied in mapping coastlines, vegetation cover, mapping factory plants for engineering purposes, etc. this involves LiDAR surveys. In most cases our products are maps. Maps give new insights on opportunities and our place with respect to these opportunities.
2. REMOTE SENSING
Images used are from remotely located sensors basically satellites. Currently satellite imagery are available at very good resolutions allowing up to 3m spatial resolution for multispectral sensors. Satellite images are recommended for wide area coverages. They allow for global acquisition of spatial data and there are numerous sensors capturing a variety of spatial aspects e.g. salinity, land cover, temperature changes, among many others.
The industry is fast growing and can now ubiquitously provide positions of objects even in real time. Positioning is done using the following;
• GPS positioning
• INS (Inertial Navigation Systems) - not affected by canopy and very reliable.
• Field surveys
• Combination of GPS & INS
• Measurements on maps
• Boundary / cadastral/ title surveys
• Control surveys
• Engineering surveys (mining surveys, road corridor surveys, setting out, surveys to support utility services laying out)
• Machine / elevator alignment surveys
• Deformation monitoring – considers deformation in building and other engineering structures
Involves use of photographs for determining locations. Used for limited extents of coverage due to costs involved.
• Close range photogrammetry
• Aerial photogrammetry
Photographs are good for mapping and currently thermal cameras are also available to capture various environmental feature not easily captured with the typical aerial camera.