Towards an open geospatial service architecture supporting heterogeneous Earth observation missions

Abstract

Heterogeneous Earth Observation missions pose the problem that each of them offers its own way and technology of how to search for and access to mission results such as Earth observation datasets. Typically, these tasks are provided by ground segment software services which may be called through corresponding interfaces by client geospatial software applications. This paper presents the design and the architecture of the Heterogeneous Mission Accessibility (HMA) which is an interoperability initiative of the European/Canadian Ground Segment Coordination Body. The final objective of HMA is to leverage the idea of a service-oriented architectural style. This means, that the individual ground segment systems shall be loosely-coupled by means of an HMA Service Network.The paper is an excerpt of the comprehensive "HMA cookbook" to be published soon by the European Space Agency (ESA). It describes the HMA approach for user authentication and authorization based upon standard Web services and the discovery of, the access to and the presentation of datasets by means of Open Geospatial Consortium (OGC) standards. It is outlined how the feasibility analysis of sensor observation tasks and the ordering of products may be expressed by the service and information models of the OGC Sensor Web Enablement initiative. The paper concludes with a discussion about the follow-on research topic of service-oriented design of Earth observation applications.

Front Matter: Volume 8534

“…Further organizations that have a contractual relationship with ESA in the framework of HMA are the European Maritime Safety Agency (EMSA), the European Union Satellite Centre (EUSC), the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) in order to ensure data access and interoperability with meteorological missions, the Joint Research Centre (JRC) of the European Commission in order to ensure alignment to the INSPIRE Implementing Rules, and the commercial data distributors Spot Image and Infoterra GmbH for specific missions [8].…”

Design and implementation of scalable GetFeasibility service to enhance Sensor Planning Service for earth observation task

“…The Heterogeneous Mission Accessibility Project (HMA) launched and overviewed by the Ground Segment Coordination Body (GSCB) has attempted to establish harmonized access to heterogeneous EO missions' data from multiple missions [4,5]. The Feasibility Server built in HMA includes propagation algorithms for predicting satellite sensor earth track and functionalities for taking into account meteorological conditions [6].…”