OGC 10-135 EO Satellite Tasking Extension for SPS
swe:field name
= AcquisitionParameters
swe:DataRecord definition
= http:www.opengis.netdefpropertyOGC-EO0sarAcquisitionParametersSAR
swe:field name
= GroundResolution
swe:QuantityRange definition
= http:www.opengis.netdefpropertyOGC-EO0GroundResolution
gml:name Ground Resolution
gml:name swe:uom
code =
m swe:constraint
swe:AllowedValues swe:interval
1.0 50 swe:interval
swe:AllowedValues swe:constraint
swe:value 20 50
swe:value swe:QuantityRange
swe:field swe:field
name =
InstrumentMode swe:Category
definition =
http:www.opengis.netdefpropertyOGC-EO0InstrumentMode gml:name
Instrument Mode gml:name
swe:codeSpace xlink:href
= http:www.dlr.deregistryTXModes
swe:constraint swe:AllowedTokens
swe:value ScanSAR
swe:value swe:value
StripMap swe:value
swe:value SpotLight
swe:value swe:AllowedTokens
swe:constraint swe:value
ScanSar swe:value
swe:Category swe:field
swe:field name
= FusionAccepted
swe:Boolean definition
= http:www.opengis.netdefpropertyOGC-EO0FusionAccepted
gml:name Fusion Accepted
gml:name swe:value
true swe:value
swe:Boolean swe:field
swe:field name
= PolarizationMode
swe:Category definition
= http:www.opengis.netdefpropertyOGC-EO0sarPolarizationMode
gml:name Polarization Mode
gml:name swe:codeSpace
xlink:href =
http:www.opengis.netdefpropertyOGC-EO0sarPolarizationModes swe:constraint
swe:AllowedTokens swe:value
HH swe:value
swe:value VV
swe:value swe:value
HH-HV swe:value
swe:value VV-VH
swe:value swe:AllowedTokens
swe:constraint swe:value
HH swe:value
swe:Category swe:field
swe:DataRecord swe:field
The code space defining all instrument modes identified by http:www.dlr.deregistryTXModes
in the example above shall be provided in a URL accessible form and encoded in the GML format. An example of instrument mode code
space is given in Annex C.
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EO Satellite Tasking Extension for SPS OGC 10-135
Requirement http:www.opengis.netspecEOSPS2.0reqsartasking-params-codepace
Req 38. A code space identifying and defining the supported SAR instrument modes
shall be provided.
Requirement http:www.opengis.netspecEOSPS2.0reqsartasking-params-codespace-gml
Req 39. A custom SAR code space shall be URL accessible and encoded in GML 3.2
format. The code space document shall pass the corresponding conformance test
class of [OGC 07‐036].
7.3.2.2 ValidationParametersSAR Class
7.3.2.2.1 Description
This group of parameters is used to specify the automatic validation options for imagery acquired by a SAR instrument. It describes the user needs in terms of image quality. The
EO-SPS server shall report an acquired segment as “VALIDATED” see ProgrammingStatus class in section §7.1.5.2 when it satisfies these criteria unless a
manual validation mode has been requested see the Validate operation in section §0.
7.3.2.2.2 Data model
The ValidationParametersSAR class is derived from the abstract ValidationParameters class of the core package and adds specific validation parameters for SAR sensors.
«DataType»
Core Tasking Parameters:: ValidationParameters
«DataType»
ValidationParametersSAR
«property» + MaxNoiseLevel:
Real + MaxAmbiguityLevel:
Real
Figure 21 – UML diagram of the ValidationParametersSAR class
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2011 Open
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75
OGC 10-135 EO Satellite Tasking Extension for SPS
Name Description
Type unit
MaxNoiseLevel Maximum acceptable signal to noise ratio for each acquired imagery
segment. Real decibel
MaxAmbiguityLevel Maximum acceptable ambiguity level for each acquired imagery segment.
Real decibel
7.3.2.2.3 SWE Common encoding
The following table and XML snippet describe how this tasking parameters group shall be encoded using the SWE Common Data Model:
Field Name Definition
Component
ValidationParameters http:www.opengis.netdefpropertyOGC-EO0sarValidationParametersSAR
DataRecord MaxNoiseLevel
http:www.opengis.netdefpropertyOGC-EO0sarMaxNoiseLevel Quantity
MaxAmbiguityLevel http:www.opengis.netdefpropertyOGC-EO0sarMaxAmbiguityLevel
Quantity swe:field
name =
ValidationParameters swe:DataRecord
definition =
http:www.opengis.netdefpropertyOGC-EO0sarValidationParametersSAR swe:field
name =
MaxNoiseLevel swe:Quantity
definition =
http:www.opengis.netdefpropertyOGC-EO0sarMaxNoiseLevel gml:name
Max Noise Level gml:name
swe:uom code
= dB
swe:Quantity swe:field
swe:field name
= MaxAmbiguityLevel
swe:Quantity definition
= http:www.opengis.netdefpropertyOGC-EO0sarMaxAmbiguityLevel
gml:name Max Ambiguity Level
gml:name swe:uom
code =
dB swe:Quantity
swe:field swe:DataRecord
swe:field
7.3.3 Tasking responses for SAR missions
The Segment objects listed in feasibility and task status reports and corresponding to imagery segments acquired by SAR instruments can make use of the Acquisition class
defined in the SAR package of the EO Metadata standard [OGC 10-157] instead of the Acquisition class defined in the core EOP package.
This class defines additional acquisition metadata specific to SAR instruments such as polarization mode and channels, antenna look direction, etc…
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