Proposal for a Collaborative Data Infrastructure for Control of DEMs

Global digital elevation models are well suited for many
applications and therefore their quality needs to be evaluated.
However, the evaluation of this type of data is expensive and efforts
are often repeated. In addition, in certain global applications, the
possibility of accessing local control data is missing. This paper
proposes the design of a collaborative data infrastructure for the
control of digital elevation models. Specifically, the data model
related to the control part is established and, in addition, it must
support the collaborative web application. The data may be of point
type (e.g. points surveyed by Global Navigation Satellite Systems),
transect (e.g. altimetric profiles or paths), or surface (e.g. a high
density and accuracy patches). It is a flexible design that
incorporates metadata for subsequent filtering. Along with the
spatial and temporal aspects of the data, metadata attributes
related to accuracy, instrumentation, operator, etc., are also
included. All of these attributes must allow content to be properly
filtered to provide adequate reference data for Digital Terrain
Models (DTM) and Digital Surface Models (DSM) assessments