天文卫星下传数据处理系统的规划

Planning of Data Processing System for Astronomical Satellite

天文卫星获取的数据需要经过卫星下传数据处理系统的一系列加工,生成可以分析的数据产品,这些产品及相应软件要发布给国内外用户,同时数据处理系统还要监测载荷状态、数据质量及天体源爆发等。这样,下传数据处理系统的建设直接关系到物理成果的获取,规划该系统就变得非常有意义。从数据产品定义、子系统规划、数据流程等方面介绍卫星下传数据处理系统的规划,并提出以模块化开发方式从整体上协调各个子系统的开发,使各个系统及其软件相互配合,共同促进科学产出。

The data obtained from astronomical satellite is telemetered to ground and converted into high products by the data processing system.The products as well as these analytic software will be opened to the public.Meanwhile,the data processing system monitors status of payloads and quality of data,gives a quicking look to the data.Thus,planning of data processing system will be helpful for improving the scientific output,particularly in detecting new astronomical sources.This work introduces the system from the definition of data products at the different stages of processing,conceptual view of this system,design of its subsystems and flow of data,and illustrates some details of processing.It can help to establish a method for software development to reduce the cost of human resources and boost scientific output.