.: Remote Sensing

GDS also specializes in imagery processing work involving several types of satellite images and offer services based on the project requirements. GDS has carried out several projects involving satellite images.

However the accuracy achieved by satellite imagery is limited and depends on the specification of imagery, the project requirement and cost

Orthorectified Landsat5 Image

Classified Landsat7 Image-Nigeria

GDS scope of work involving satellite imagery: 

a)      Preliminary design work for route selecting

b)      Land use mapping

c)      Flood monitoring

d)      DEM extraction from stereo pair images

e)      Change detection 

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.: Geographic Information System (GIS) 

Geographic Information Systems (GIS) technology is a computer-based data collection, storage, and analysis tool in preparing, presenting, and interpreting facts of the earth information into easily understood maps. A GIS can perform complicated analytical functions and then present the results visually as maps, tables or graphs.

The capabilities of GIS are now used extensively in government, business and research for a wide range of applications including wildlife habitat modeling, recreation resource management, floodplain management and flood control, wetlands restoration, aquifer and groundwater management, forest management, coastal management, fisheries management, natural hazard management, utility and infrastructure planning, urban and town planning, environmental resource analysis, real estate analysis, marketing and demographic analysis, habitat studies, and archaeological analysis.

With the full range of geo-spatial technologies, GDS is able to provide services in

·         Spatial analysis

·         Data Modeling

·         Information and data management

·         Database development and management

·         Image processing

·         Map production

.: Product and Services

GDS provides Remote Sensing Survey Technology from both active and passive systems for several types of applications such as:

• Land use map

• Disaster mapping

• DEM extraction (accuracy is based on the spatial resolution and represents tree height)

• Forest mapping

• Sea surface temperature mapping

• Coastal mapping

• Change detection

Hence, the level of accuracy achieved by the remote sensing survey is limited by the spatial resolution and is highly recommended for regional studies.