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Overview of "InstrumentSite" Resource

Represents a reference designator within an observatory, designated for the deployment of functionally equivalent instrument devices, with geospatial and temporal bounds.


Refer to the CIAD APP Resource Model page for metadata definitions.

Responsible Service Observatory Management Service
Aliases Instrument Site; Instrument (conflicts with Instrument Device alias)
Architecture References  
Other References R2-R3 Architectural Composition-Principals to Services
Resource Spec for Site
Technical Notes  
Version 0.6
Comments Represents a virtual instrument over time, not the physical device
User Facing Yes
Open Issues/Changes  


A logical instrument is a virtual or conceptual representation of a series of instruments in the same place over time. Use Cases include obtaining a time series of data from a given 'instrument site', where different instruments have occupied the site over time, or getting the current information for a given instrument site without worrying about which individual instrument occupies it.

As individual physical instruments are swapped out operationally (e.g., replaced with their successor after a period of operations), this concept links all the information from all the instruments of that type/location, across all of those deployments. This if instrument A(1) is replaced by A(2) and then A(3) at a particular location X, the logical instrument InstrumentLogical-A-X captures the time series of data sets across the successive deployments.

Similarly to Site, The concept of Instrument Logical typically generalizes an individual, concrete instrument, to cover a different time period or representation than any single Instrument Device instance represents. The association between actual instruments and logical instruments is made as a function of time: Only one instrument can act as the logical instrument at any given time.

Attributes and Metadata References

References in this section point to the material that describes attributes of the resource, if any.

Generated Specification



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