The Simple Spectral Access protocol
The Simple Spectral Access protocol
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DOI：
10.1117/12.553167
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
M. Dolensky;D. Tody
中科院分区：
文献类型：
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作者：
M. Dolensky;D. Tody
简单光谱接入（SSA）规范的目标是定义一个统一的光谱数据接口，包括光谱能量分布（SEDs）、一维光谱和时间序列数据。与2D图像相比，光谱以各种各样的格式存储，并且在天文学中没有广泛使用的标准来表示光谱数据，因此，指定SSA的部分挑战是定义通用分光光度数据模型以及各种数据格式（包括XML和FITS）的标准序列化定义。提供了对地图集（预先计算的）数据和按需计算的虚拟数据的访问。简单频谱访问中的“简单”一词指的是实现光谱数据服务和从分布式数据集合中检索光谱数据的简单性的设计目标。SSA是国际虚拟天文台联盟（IVOA）数据访问层（DAL）工作组的产物。这些要求来源于对光谱数据提供者和数据消费者的调查，并在会议和电子论坛的广泛讨论以及欧洲天体物理虚拟天文台（AVO）和美国国家虚拟天文台（NVO）的原型工作中进一步完善。
The goal of the Simple Spectral Access (SSA) specification is to define a uniform interface to spectral data including spectral energy distributions (SEDs), 1D spectra, and time series data. In contrast to 2D images, spectra are stored in a wide variety of formats and there is no widely used standard in astronomy for representing spectral data, hence part of the challenge of specifying SSA was defining a general spectrophotometric data model as well as definitions of standard serializations in a variety of data formats including XML and FITS. Access is provided to both atlas (pre-computed) data and to virtual data which is computed on demand. The term simple in Simple Spectrum Access refers to the design goal of simplicity in both implementing spectral data services and in retrieving spectroscopic data from distributed data collections. SSA is a product of the data access layer (DAL) working group of the International Virtual Observatory Alliance (IVOA). The requirements were derived from a survey among spectral data providers and data consumers and were further refined in a broad discussion in meetings and electronic forums as well as by prototyping efforts within the European Astrophysical Virtual Observatory (AVO) and the US National Virtual Observatory (NVO).