The software architecture to control the Cherenkov Telescope Array

Autor: P. Wegner, G. Tosti, J. Schwarz, Vito Conforti, I. Oya, Pablo Oliveira Antonino, D. Melkumyan, Andreas Morgenstern, E. Lyard, L. Hagge, Ullrich Schwanke, M. Füßling, Josep Colomé
Rok vydání: 2016
Předmět:
Computer science
Cherenkov telescope array (CTA)
Computer control
02 engineering and technology
01 natural sciences
Data acquisition
Software
Telescope control software
0202 electrical engineering
electronic engineering
information engineering
Use case
010303 astronomy & astrophysics
computer.programming_language
Gamma rays
Modeling languages
Software architecture
Software design
Telescopes
Trace elements
Alma common softwares
Atacama Large Millimeter/sub-millimeter Array (ALMA)
Cherenkov telescope arrays
Software building blocks
Software development approach
SysML
Systems modelling languages (SysML)
Telescope control software
Computer control
Alma common software (ACS)
UML
Component-based software engineering
Systems engineering
Modeling language
Instrumentation
Real-time computing
Submillimeter Array
System model
Unified Modeling Language
Systems Modeling Language
0103 physical sciences
Software system
Trace elements
business.industry
Software development
020207 software engineering
Systems modeling
Cherenkov Telescope Array
Software deployment
Alma common softwares
business
computer
Zdroj: SPIE Proceedings.
ISSN: 0277-786X
DOI: 10.1117/12.2232520
Popis: The Cherenkov Telescope Array (CTA) project is an initiative to build two large arrays of Cherenkov gamma- ray telescopes. CTA will be deployed as two installations, one in the northern and the other in the southern hemisphere, containing dozens of telescopes of different sizes. CTA is a big step forward in the field of ground- based gamma-ray astronomy, not only because of the expected scientific return, but also due to the order-of- magnitude larger scale of the instrument to be controlled. The performance requirements associated with such a large and distributed astronomical installation require a thoughtful analysis to determine the best software solutions. The array control and data acquisition (ACTL) work-package within the CTA initiative will deliver the software to control and acquire the data from the CTA instrumentation. In this contribution we present the current status of the formal ACTL system decomposition into software building blocks and the relationships among them. The system is modelled via the Systems Modelling Language (SysML) formalism. To cope with the complexity of the system, this architecture model is sub-divided into different perspectives. The relationships with the stakeholders and external systems are used to create the first perspective, the context of the ACTL software system. Use cases are employed to describe the interaction of those external elements with the ACTL system and are traced to a hierarchy of functionalities (abstract system functions) describing the internal structure of the ACTL system. These functions are then traced to fully specified logical elements (software components), the deployment of which as technical elements, is also described. This modelling approach allows us to decompose the ACTL software in elements to be created and the ow of information within the system, providing us with a clear way to identify sub-system interdependencies. This architectural approach allows us to build the ACTL system model and trace requirements to deliverables (source code, documentation, etc.), and permits the implementation of a flexible use-case driven software development approach thanks to the traceability from use cases to the logical software elements. The Alma Common Software (ACS) container/component framework, used for the control of the Atacama Large Millimeter/submillimeter Array (ALMA) is the basis for the ACTL software and as such it is considered as an integral part of the software architecture.
Databáze: OpenAIRE
Externí odkaz: