Geosynchronization

Agile spatial data infrastructures based on OGC standards allow content provider organizations to deploy increasingly efficient networks capable of responding to dynamic requirements for using geospatial or location
referenced content. In this context, content provider organizations are being more and more called upon to deliver current, timely and verified data over the World Wide Web.

In order to satisfy these requirements, content providers must collaborate with outside entities to collect new data and/or update their existing data holdings. This may, for example, mean synchronizing their data with closest-to-source providers as might be the case between municipal, state/provincial and/or federal levels of government. This may also mean crowd-sourcing (see http://en.wikipedia.org/wiki/Crowdsourcing) their data production or supporting volunteer geographic information (VGI). Crowd-sourcing or VGI has proven to be a very effective mechanism for emergency management / disaster relief situations as is evidenced by the response to the Haiti earthquake of 12-JAN-2010.

Regardless of the nature of the collaboration, there is a need for a service to mediate the interaction between data providers and outside entities acting as data collectors. The service must support data entry with validation, notification of changes to interested parties and allow replication of the data provider's features.

A Geosynchronization service, deployed by a data provider, sits between the features a provider offers via a WFS and data collectors. It allows data collectors to submit new data or make modifications to existing features without directly affecting the features in the provider's data store(s) until validation has been applied thus ensuring that the data published by the provider is of high quality.

Geosynchronization Standards Working Group

 

Tutorials

  • YouTube video on GeoSynch Architecture
    Jeff Harrison, President & CEO of The Carbon Project, describes the architecture of the GeoSynchronization service during the OGC OWS-7 testbed. This architecture is implemented in The Carbon Project's CarbonCloud Sync platform.
  • YouTube video on OWS7 GeoSynchronization demo

    The Carbon Project's CarbonCloud Sync platform was tested and demonstrated at the Open Geospatial Consortium (OGC) Web Services 7 (OWS-7). The problem addressed by this solution is the need to receive real-time geographic updates from many sources, validate them, and then send the updates to open-geospatial Web Feature Services (WFS) from many organizations. The demonstration uses WFS from ESRI and CubeWerx, a REST Web Map Tile Service (WMTS) from CubeWerx, and cloud computing services from Microsoft Azure.