Publication Date: 2020-10-26

Approval Date: 2020-09-23

Submission Date: 2020-08-10

Reference number of this document: OGC 20-073

Reference URL for this document: http://www.opengis.net/doc/PER/EOAppsPilot-summary

Category: OGC Public Engineering Report

Editor: Ingo Simonis

Title: OGC Earth Observation Applications Pilot: Summary Engineering Report


OGC Public Engineering Report

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This document is not an OGC Standard. This document is an OGC Public Engineering Report created as a deliverable in an OGC Interoperability Initiative and is not an official position of the OGC membership. It is distributed for review and comment. It is subject to change without notice and may not be referred to as an OGC Standard. Further, any OGC Public Engineering Report should not be referenced as required or mandatory technology in procurements. However, the discussions in this document could very well lead to the definition of an OGC Standard.

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1. Subject

This Engineering Report (ER) summarizes the main achievements of the OGC Innovation Program initiative Earth Observation Applications Pilot, conducted between December 2019 and July 2020.

EOAppsPilot

2. Executive Summary

This Engineering Report (ER) summarizes the main achievements of the OGC Innovation Program initiative OGC Earth Observation Applications Pilot, conducted between December 2019 and July 2020. The pilot explored an Earth Observation Application software architecture that was developed in OGC Testbeds 13-15. The architecture allows the deployment and execution of externally developed applications on Earth Observation (EO) data and processing platforms. The architecture is essentially based on three major components:

  • Execution Management Service (EMS): This component provides a RESTful interface (defined using OpenAPI) to register applications and build workflows from registered applications. The EMS selects the appropriate ADES platform to execute the processes based on the runtime input parameters (close to the data).

  • Application Deployment and Execution Service (ADES): This component allows deployment, discovery, and execution of applications or processing of quoting requests.

  • Applications are delivered in the form of Docker images along with corresponding metadata called an Application Package (AP). The application package provides all information for deployment and execution of an application.

The pilot demonstrated that the interoperability arrangements developed and documented in OGC Innovation Program initiatives Testbed 13, 14 and 15 provide a solid starting point for maturity tests within operational platforms. Additional arrangements and more detailed definitions have been developed during the pilot that now allow deployment and execution of an application on various platforms with minimal adaptions.

The pilot produced very valuable results. It confirmed the general approach to use Docker for application packaging and HTTP Web APIs or Web Services for application handling and execution. It defined application patterns based on data inputs/outputs, confirmed the role of the Common Workflow Language (CWL) for application description, execution, and workflow building; and recommends the usage of the SpatioTemporal Asset Catalog (STAC) as a data manifest for application inputs and outputs.

2.1. Objectives

The Earth Observations Applications Pilot explored and evaluated the maturity of the Earth Observation Applications architecture. The architecture has been developed in various OGC Innovation Program initiatives over the last three years. This pilot now explored everything in operational environments.

2.2. Document contributor contact points

All questions regarding this document should be directed to the editor or the contributors:

Contacts

Name Organization Role

Ingo Simonis

OGC

Editor

2.3. Foreword

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The Open Geospatial Consortium shall not be held responsible for identifying any or all such patent rights.

Recipients of this document are requested to submit, with their comments, notification of any relevant patent claims or other intellectual property rights of which they may be aware that might be infringed by any implementation of the standard set forth in this document, and to provide supporting documentation.

3. Introduction

This Engineering Report (ER) summarizes the main achievements of the OGC Innovation Program initiative Earth Observation Applications Pilot, conducted between December 2019 and July 2020. The Call for Participation was published in December 2019. The actual execution phase lasted from January to July 2020.