Database Reference
In-Depth Information
Consumer
SOS
Back-end
GetCapabilities
SOS Capabilities
DescribeSensor (id)
SML/TML doc
GetObservation
O&M Observation
Open stream
Stream
Figure 10.4
SOS sequence diagram for getting metadata and observations,
including access to streaming data.
form of SensorML or a TransducerML document. Next, the client will request
the actual data from the sensor. This is done by submitting a GetObservation
request. The corresponding response is an O&M document containing the
observation, either explicitly (inlined in the document), or by providing a
hyperlink to the actual data. This is illustrated in the lower part of Figure 10.4
sos:Capabilities
ServiceIdentification
Title,
Abstract,
Keywords
ServiceProvider
Name,
ContactInfo,
Site
Operations
GetCapabilities, DescribeSensor, GetObservation
FilterCapabilities
Spatial,
Temporal,
Scalar
ObservationOfferings
visible radiance, near-infrared, mid-infrared
boundedBy
Envelope:
field of view of GOES Imager
TimePosition
beginPosition:
2003-10-10
endPosition:
indeterminatePosition
Result format:
text/xml;subtype=“OM”
Figure 10.5
Schematic example of an SOS capabilities document with ob-
servation offerings exemplified with typical spectral sensors from an environ-
mental satellite (NOAA's GOES satellite).
