Development of Sensor Web Applications with Open Source Software

When developing client applications for OGC Web services, it is necessary to implement connectors that are able to interact with the according service interfaces. Since the interaction with OGC Web services is standardized and thus common for multiple client applications, the open source initiative 52°North started in 2006 the development of the OX-Framework - a software framework whose architecture can be used to ease and encapsulate the utilization of OGC Web Services. This framework has gained maturity in the past years and has recently been used as the technological basis for innovative Sensor Web applications in several projects. This work gives an overview of the framework's architecture and subsequently presents examples of open source Sensor Web applications built on top of it.