Abstract
The control system is the central control unit of the radio telescope. It is used to monitor, control, coordinate, and manage software and hardware systems so as to satisfy the requirements of high-precision control in astronomical observation of radio telescope. The control system architecture is the foundation for the implementation of the control system, which determines the stability, scalability, and maintainability of the control system. Furthermore, the architecture design of the control system is closely geared towards the technological development of radio telescope and computer software architecture. In this article, we analyze the characteristic of the control system of a radio telescope in various steps and discuss the development of their architecture and middleware framework. System architecture and middleware framework of control system also serve as a useful reference for the design of other radio telescope control systems.
Highlights
Development difficulty Maintainability Deployment methodE first stage: centralized control system e second stage: distributed control system without middleware framework e third stage: distributed control system based on middleware framework
Since the 21st century, radio telescopes have developed rapidly in both single dish and array antennas [6, 7]
The middleware framework solved these problems, which shielded complex implementation details and provided a unified interface. erefore, a distributed architecture based on middleware framework was organized into two ways: (1) Service-Oriented Architecture (SOA) based on middleware framework [28], such as Large Millimeter Telescope (LMT) monitoring and control system [29] and Tianma Radio Telescope (TMRT) distributed control software [30]; (2) the combination of SOA and event-driven architecture (EDA) based on middleware framework, such as Atacama Large Millimeter Array (ALMA) software [31], Australian Square Kilometre Array Pathfinder (ASKAP) monitoring and control system [32], and Giant Metrewave Radio Telescope (GMRT) control and monitoring system [33]. is type of control system coordinated and managed the software and hardware subsystems, such as antennas, receivers, and terminals divided any subsystem into one or more components
Summary
E first stage: centralized control system e second stage: distributed control system without middleware framework e third stage: distributed control system based on middleware framework. Many kinds of hardware equipment Many types of hardware and auxiliary centralized hardware distribution, and auxiliary equipment, complex equipment, very complicated simple equipment functions, single functions of equipment, complicated equipment functions, and quite business logic function business logic complicated business logic
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