HXMT 数据访问层原型设计

摘要

硬X射线调制解调望远镜地面应用系统存储了海量的观测数据和工程数据，数据类型众多、数据量大是该系统的特点之一。为了便于管理复杂种类的数据，提高数据处理效率，设计了数据访问层。本文介绍数据访问层的功能和实现原理，开发了数据访问层系统原型，测试结果表明该原型系统已经达到了设计要求。%The Hard X-ray Modulation Telescope ( HXMT) Ground Application Segment will store massive ob-served data of HXMT , one of the features in this segment is that it includes many kinds of and a great deal of data.In order to process these complicated kinds of data easily and improve it efficiently , the concept of Data Access Layer was proposed .This article introduces the function and implement about Data Access Layer .Then a primitive Data Access Layer program was developed and tested .It shows that this program satisfies the basic requirements .