相关处理机是VLBI数据处理系统的核心设备.基于计算机集群和高性能并行计算技术研发的软件相关处理机,正逐渐成为VLBI海量观测数据处理的主流,并以其灵活性、扩展性、易用性等特点,在天文、测地和深空探测领域中获得广泛应用.梳理了国内外主流VLBI软件相关处理机系统发展历史和技术架构,并做归纳比较,最后分析未来的应用需求及发展趋势.%Correlator is the core component of VLBI data processing device. Software corre-lator, which is based on the development of high performance computing clusters and parallel algorithms, is becoming the main stream of VLBI massive data processing. Moreover, due to its flexibility, short R&D cycle, easy usage as well as its convenience for upgrading and ex-panding, software correlator has been widely used radio astronomy, geodesy and deep space exploration. In this paper, we summarize the history and evolution of software correlators developed by different institutes in the world and compare their architectures and analyze its trend of future demands and development.
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