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Mapping very dense urban areas...
Mapping very dense urban areas in Mayotte with Pléiades Neo HD15 imagery
Mayotte is France's smallest overseas department, but has the highest population growth rate in the country with an average of almost 5 children per woman. This has led to a sharp acceleration in urbanisation, and an expension of shanty towns on the island.
In the context of Mayotte’s strong demographic growth, the existing environment is evolving rapidly, making it challenging to maintain up-to-date maps. Mamoudzou, with its density of around 1,700 inhabitants per square kilometer, is a densely populated city and a prime example of the building expansion currently taking place on the island.
As representatives of the administration of urban communities in Mayotte, CADEMA and 3CO are tasked with updating their local authority maps in a region where urban developments are evolving quickly. This update is vital for pinpointing flood and landslide-prone areas and offering necessary assistance to residences.
To address the obsolescence of their maps, the local authority seeks an alternative to expensive and hard-to-get aerial images that still satisfies their mapping needs. Their main goal is to acquire a recent, high-resolution view of the city that allows them to discern buildings in densely populated urban areas and update their maps effectively.
- Update the local maps in cities where infrastructures evolve quickly
- Find an alternative to expensive and difficult to aquire aerial images
- Discern buildings in very dense urban areas.
Very high-resolution 30cm imagery is readily available in the Airbus catalogue, via our archives or through tasking, offering the accuracy and resolution mapping organisations need.
When cartographers need a sharper image, Airbus can provide a HD15 advanced product image. Derived from Pléiades Neo 30cm resolution data, it enhances the quality of photo-interpretation, allowing for better discernment of details such as roof coverings, sheet-metal structures and urban furniture.
As a result of incorporating recent HD15 imagery into their mapping updates, local authorities have been able to rehabilitate substandard housing and relocate households from high-risk areas.
The use of Pléiades Neo HD15 imagery results in sharper details within the images and better clarity in the drop shadows. HD15 advanced product fully meets the cartographic needs of mapping organisations. Our satellite imagery is quick and easy to access online through the OneAtlas platform.
The HD15 imagery derived from Pleiades Neo satellites perfectly meets our needs for building identification. Airbus imagery delivers up-to-date cartographic information over a defined area, presenting a more agile and cost-effective alternative to aerial providers.
Pierre Bernard
Geographic Information Systems Engineer
La TeleScop was created in 2018 by engineers and doctors from the research laboratories of the Maison de la Télédétection in Montpellier wishing to contribute to the knowledge of territories thanks to data from Earth observation using satellite imagery.
The Dembéni-Mamoudzou Agglomeration Community (CADEMA) is a public intercommunal cooperation establishment of 13 villages and 89,090 inhabitants, representing a third of the total population of Mayotte. The main objective of the CADEMA is to establish a space of solidarity with a view to carrying out a common regional development and planning project in the territories of Dembéni and Mamoudzou.
