Participatory methods: grassroots mapping

Grassroots mapping can be described as a low cost method of obtaining aerial photographs. As a carrier sensor it uses either a balloon filled with helium (if the wind speed is no more than 10 km/h) or kite flying (at higher wind speeds) (Grassrootsmapping.org, 2010). It could be argued that this is merely a variation on the UAV (Unmanned Aerial Vehicles), however, this approach is more useful for small community projects, mainly for its simplicity and low operating costs.

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