Abbreviated terms UML notation Used parts of other documents Use Case Description

Copyright © 2009 Open Geospatial Consortium, Inc. 11 4 Conventions

4.1 Abbreviated terms

ACI Access Control Information AI Authentication Information AIM Aeronautical Information Management CSW Catalog Service for the Web DMZ Demilitarized Zone EDA Event Driven Architecture IP Internet Protocol NAT Network Address Translation OWS-6 Open Web Services, Phase 6 SAS Sensor Alert Service SOS Sensor Alert Service SI Security Information SPS Sensor Planning Service SWE Sensor Web Enablement WNS Web Notification Service XMPP Extensible Messaging and Presence Protocol

4.2 UML notation

Sequence diagrams that appear in this Engineering Report are presented using the Unified Modeling Language UML static structure diagram, as described in Subclause 5.2 of [OGC 06-121r3].

4.3 Used parts of other documents

This document uses significant parts of document [OGC 06-121r3]. To reduce the need to refer to that document, this document copies some of those parts with small modifications. To indicate those parts to readers of this document, the largely copied parts are shown with a light grey background 15. 12 Copyright © 2009 Open Geospatial Consortium, Inc. 5 Use case “Fire at the airport” As it seems to be impossible to describe a standards based approaches for the implementation of these security frameworks in a general way, this Engineering Report focuses on a particular use case in which it is possible to register sensors with a catalog and task the sensors to fulfill a certain function. The use case for this ER is based on the use case ―fire at the airport‖ as described in the GPW thread of the OWS-6 initiative. But, it is slightly modified to accommodate the use of CCSI sensors and to become specific to the SWE thread. Further on, the use case was extended by incorporating a unattended aerial vehicle UAV in order to elaborate additional security relevant aspects.

5.1 Use Case Description

In the first responders dispatch office FRDO, administrators connect different CCSI sensors to different Sensor Web Services to allow monitoring of fire alerts at an airport. After the sensor registration is completed, alert conditions are configured. In order to have fire alerts be reported to specific operators of the FRDO, the operator subscribes for the pre-configured fire alert events. During runtime of the system, fire alerts will be published to the operators. After an operator received a fire alert, they have the responsibility to dispatch fire fighters and gather further information, relevant to support the fire fighters. In this respect, the operators can task UAVs to take pictures of the scene that can be obtained and used by the firefighters to understand the overall scene better. They can also obtain additional sensor observations, for example of plume sensors, to get additional scene information. For this scenario, it is assumed that imagery produced by UAVs and the additional observations are classified. Therefore, operators need a particular clearance to see that information.

5.2 Use Case Architecture