Copyright © 2011 Open Geospatial Consortium.
47 The details of the operation request and response are explained in the following
subsections.
11.2.1 Operation Request - DescribeSensor
A DescribeSensor operation request is performed by sending an instance of the DescribeSensor data type to the service. By default, the current description is returned. If
supported by the service see clause 11.1, a client may also request the description that wasisis going to be valid at a certain point in time – same for multiple descriptions if the
client defines an interval of time in the request.
The DescribeSensor data type is derived from the ExtensibleRequest data type see clause 9.2.1 and thus inherits all the properties contained in that data type. DescribeSensor does
not restrict the content model of ExtensibleRequest. It contains all properties defined in ExtensibleRequest.
Requirement http:www.opengis.netspecSWES2.0reqDescribeSensorRequestproperties
REQ 31. In addition to the properties inherited from ExtensibleRequest,
DescribeSensor shall contain the properties according to Table 26.
48
Copyright © 2011 Open Geospatial Consortium.
Table 26 — Properties in the DescribeSensor data type
Name Definition
Data type and values Multiplicity and
use
procedure Pointer to the
proceduresensor of which the description shall be
returned. OM_Process
a
see ISODIS 19156 value shall match one of the
procedures from the AbstractOfferings listed
by the service see clause 7.2.2
One mandatory
procedureD escription
Format identifier of the requested
proceduresensor description format
FormatCode see section 10.2.2
value shall match one of the formats supported by the
AbstractOfferings see clause 7.2.2 with the given
procedure One mandatory
validTime Time instant or time period
for which the then valid sensor description shall be
retrieved. TM_GeometricPrimitive
see clause 5.2.3 in ISO 19108 and clause 14.2.2.2
in [OGC 07-036] if validTime is TM_Instant,
the time instant shall be in the past
if validTime is TM_Period, the start time of the time
period shall be in the past Zero or one
optional If end time of time
period is in the future, all
descriptions from start time to now
- including the current
description - shall be returned
a Note: the primary use of this property is to provide a pointeridentifier – see clause 16.3.1 for further details
11.2.2 Operation Response – DescribeSensorResponse
