Presented to: AIXM Developer’s Seminar By: Navin Vembar Date: January 14, 2010 Federal Aviation...

Presented to: AIXM Developer’s Seminar

By: Navin Vembar

Date: January 14, 2010

Federal AviationAdministrationChanges in AIXM

5.1 from AIXM 5.0

2Federal AviationAdministration

AIXM 5.1 Changes – AIXM Developer’s SeminarJanuary 2010

The Change from 5.0 to 5.1

• There were 46 accepted change proposals • All available on AIXM Wiki• Most were changes to existing features• Some were major conceptual changes,

however



New Features or Types

• AeronauticalGroundLight – Aerodrome Beacons, etc.

• HotSpot• RulesProcedures• CodeMarkingConditionType



Removed Features, classes, types

• AirspaceAssociation removed• TerrainPoint removed



Updates to Features

• Nose-In Guidance at Aircraft Stands• GateStand->AircraftStand• Add synchronized lighting attribute to

VerticalStructure• Update to material attribute of

VerticalStructure• Addition of certification date info to

AirportHeliport• Runway Centerline Point designator

attribute



Updates to Features, cont’d

• Move attributes from VerticalStructure to VerticalStructurePart

• Addition of Navaid purpose • Addition of attributes to FAS Data Block• Addition of offset attributes to FinalLeg• Updates to SurfaceContamination feature to better

represent SNOWTAMs• Add signalType to RadioFrequencyArea and

NavaidOperationalStatus• Add Morse Code to MarkerBeacon feature



Updates to Relationships

• AirportHeliport isManagedBy relationship updated to association class

• ApproachLightingSystem now inherits from GroundLightSystem

• Multiplicity of relationship from PostalAddress, etc. to ContactInformation

• Self-association for OrganizationAuthority• Add relationship from Navaid to AirportHeliport• Reversed association between Procedure and

SafeAltitudeArea



Updates to Relationships, cont’d

• New association between SafeAltitudeArea and AirportHeliport

• New association between MissedApproachLeg and ApproachCondition



Updates to Types

• Added new value in CodeProcedureDistanceType• Added new value in CodeAltitudeAdjustmentType• Remove Y, Z from CodeRouteDesignatorSuffixType• Separating RunwayElement and TaxiwayElement types• ILS Category changes to types• Add RNAV types to CodeDesignatedPointType• Use of ISO Language codes instead of custom• CodeFuelType is changed to codelist• Additional uom values• NOTAM updates to CodePurposeType, CodeFlightStatusType

and CodeOriginType• Direction Finder added as a Navaid Type• ALLOWED as FlightRestriction type



Changes to XSD



CodeAircraftEngineBaseType

JET : stringPISTON : stringTURBOPROP : stringALL : stringOTHER : string

<<codelist>>

string

<<XSDfacet>> whiteSpace : null = preserve

(from XMLSchemaDatatypes)

<<XSDsimpleType>>

Changes in AIXM 5.1 XSD schemas

• The <<enumeration>> types no longer exist => replaced by <<codelist>> with the OTHER value

• Mapping of <<codelist>><simpleType name="CodeAircraftEngineBaseType"> <union> <simpleType> <restriction base="xsd:string"> <enumeration value="JET"> <annotation> <documentation/> </annotation> </enumeration> <enumeration value="PISTON"/> <enumeration value=“TURBOPROP"/> <enumeration value=“ALL"/> </restriction> </simpleType> <simpleType> <restriction base="string"> <pattern value="OTHER:\w{2,58}"/> </restriction> </simpleType> </union></simpleType>



AIXM 5.1 Mapping Rules - Datatypes• Mapping

<<enumeration>>

<simpleType name="CodeAircraftEngineBaseType"> <union> <simpleType> <restriction base="xsd:string"> <enumeration value="JET"> <annotation> <documentation/> </annotation> </enumeration> <enumeration value="PISTON"/> <enumeration value=“TURBOPROP"/> <enumeration value=“ALL"/> </restriction> </simpleType> <simpleType> <restriction base="string"> <pattern value="OTHER:\w{2,58}"/> </restriction> </simpleType> </union></simpleType>

string



<<XSDsimpleType>>



(from AIXM Data Types)

<<enumeration>>



AIXM 5.1 Mapping Rules - Datatypes• Mapping <<codelist>>

<simpleType name="CodeApproachLightingBaseType"> <union> <simpleType> <restriction base="xsd:string"> <enumeration value="ALSAF"> </enumeration> <enumeration value="MALS"> </enumeration> <enumeration value="MALSR"> </enumeration> <enumeration value="SALS"> </enumeration> ...... </restriction> </simpleType> <simpleType> <restriction base="string"> -- NO PATTERN -- </restriction> </simpleType> </union></simpleType>

string



<<XSDsimpleType>>

CodeApproachLightingBaseType

ALSAF : stringMALS : stringMALSR : stringSALS : stringSSALS : stringSSALR : stringLDIN : stringODALS : stringAFOVRN : stringMILOVRN : stringCALVERT : string


<<codelist>>



AIXM 5.1 Mapping Rules - Datatypes

• Mapping <<datatype>> - default case

<simpleType name="DateBaseType"> <restriction base="xsd:date"> </restriction></simpleType>

DateBaseType(from AIXM Data Types)

<<datatype>>

date

<<XSDfacet>> whiteSpace : string = collapse


<<XSDsimpleType>>



AIXM 5.1 Mapping Rules - NilReason

• Most of AIXM 5.1 Data Types define a nilReason, used to indicate the reason for a null value.

DateBaseType(from AIXM Data Types)

<<datatype>>

date

<<XSDfacet>> whiteSpace : string = collapse


<<XSDsimpleType>>

DateType

nilReason : CodeNilReasonType


<<datatype>>

string



<<XSDsimpleType>>

CodeApproachLightingBaseType

ALSAF : stringMALS : stringMALSR : stringSALS : stringSSALS : stringSSALR : stringLDIN : stringODALS : stringAFOVRN : stringMILOVRN : stringCALVERT : string


<<codelist>>

CodeApproachLightingType



<<datatype>>

string



<<XSDsimpleType>>




<<enumeration>>

CodeAircraftEngineType



<<datatype>>



AIXM 5.1 Mapping Rules - NilReason

string



<<XSDsimpleType>>

CodeAircraftEngineType

nilReason : NilReasonType


<<datatype>>




<<enumeration>>

• Mapping nilReason <simpleType name="CodeAircraftEngineBaseType"> <union> <simpleType> <restriction base="xsd:string"> <enumeration value="JET"> …………………….. </restriction> </simpleType> <simpleType> <restriction base="string"> <pattern value="OTHER:\w{2,58}"/> </restriction> </simpleType> </union></simpleType>

<complexType name="CodeAircraftEngineType"> <simpleContent> <extension base="aixm:CodeAircraftEngineBaseType"> <attribute name="nilReason“ type="aixm:NilReasonType"/> </extension> </simpleContent></complexType>



AIXM 5.1 Mapping Rules - UOM

• Mapping Units of Measurement

<complexType name="ValDepthType"> <simpleContent> <extension base="aixm:ValDepthBaseType"> <attribute name="nilReason" type="aixm:NilReasonType"/> <attribute name="uom" type="aixm:UomDepthType" use="required"/> </extension> </simpleContent></complexType>

<simpleType name=“ValDepthBaseType"> <restriction base="xsd:decimal"> </restriction></simpleType>

ValDepthType

uom : UomDepthTypenilReason : CodeNilReasonType


<<datatype>>

ValDepthBaseType(from AIXM Data Types)

<<datatype>>

decimal(from XMLSchemaDatatypes)

<<XSDsimpleType>>



Conceptual Changes

• Replacement of all textual attributes with Notes– To facilitate a truly digital, non-textual definitions

• In enumerations, allow for OTHER:<value>– Allows for arbitrary enumeration values to be added by the

user

• Greater harmonization of AIXM and AMDB standards– Focus on SurfaceCharacteristics

• Aircraft Characteristics Updates– Updates across features and types to better represent the

capabilities of an aircraft



Conceptual Changes, cont’d

• Schedule – Simplification of representation of schedule across

features (major change)

• Harmonzation of Usage Features– Tied to the above

• Timesheet– Significant updates to Timesheet



Base AIXM Feature/Object Constructs

• AbstractAIXMObject: Base type for AIXM complex types that are NOT features. For example, City, ContactInformation, AirspaceVolume, etc. It derives from AbstractGMLType so that AIXM objects are recognised as GML objects, thus ensuring that GML-aware applications recognise them properly. Retains only the mandatory gml:id attribute.

<complexType name="AbstractAIXMObjectType" abstract="true"> <complexContent> <restriction base="gml:AbstractGMLType"> <sequence> <sequence/> </sequence>

<attribute ref="gml:id" use="required"/> </restriction> </complexContent></complexType>




• [Posted on the AIXM forum] The gml:id attribute is now mandatory for AIXM "objects" also, such as ContactInformation, VerticalStructurePart, etc. This is a side effect of deriving all AIXM Objects from AbstractGML, which was considered necessary in order to avoid the risk that GML-aware applications do not see certain geometrical information, if hidden inside a non-GML object such as VerticalStructurePart.

<complexType name="CityType"> <complexContent>

<extension base="aixm:AbstractAIXMObjectType"> <sequence> <group ref="aixm:CityPropertyGroup"/> <element name="extension" minOccurs="0" maxOccurs="unbounded"> <complexType> <sequence> <element ref="aixm:AbstractCityExtension"/> </sequence> <attributeGroup ref="gml:OwnershipAttributeGroup"/> </complexType> </element> </sequence> </extension> </complexContent></complexType>




• AbstractAIXMPropertyType: It provides a basis for deriving AIXM feature/object properties. It defines the nilReason attribute and currently, it is only used for properties that are derived from association with an AIM object.

<complexType name="AbstractAIXMPropertyType" abstract="true"><attribute name="nilReason" type="gml:NilReasonEnumeration"/>

</complexType>

• The nilReason is now defined :– In Datatypes.xsd for simple properties– In AIXM_AbstractGML_ObjectTypes.xsd for

complex properties





Usage & Properties with Schedule

• In AIXM 5.0, the concept of “usage” was not consistent– Should be how a feature can be used, not its status– Mixed status, flight restrictions and complex

schedules without consistency across features

• Simplify with PropertiesWithSchedule– Replace Timesheet with PropertiesWithSchedule– Represents status at different times

• No longer a separate feature



Example of PropertiesWithSchedule



Future Plans

• The next major update to AIXM (either 5.2 or 6.0) will come in 2012

• Minor updates in between, but they should not include any conceptual changes– Minimal impact to backward compatibility

• Developing a CM Plan– Including formalization through ICAO, Eurocontrol

and the FAA

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Presented to: AIXM Developer’s Seminar By: Navin Vembar Date: January 14, 2010 Federal Aviation...

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