RunwayCenterlinePoint encoding

This section provides ‘RunwayCenterlinePoint’ feature data encoding guidance.

Vocabulary

	ED-99	ED-119/AMXM	AIXM 5.1	AIRM
Name	RunwayCenterlinePoint	AM_RunwayCenterlinePoint	RunwayCenterlinePoint	RunwayCenterlinePoint

Information concept:

RunwayCenterline Point: http://www.airm.aero/viewer/1.0.0/conceptual-model.html#RunwayCentrelinePoint

Data concept:

RunwayDirection: http://www.airm.aero/viewer/1.0.0/logical-model.html#RunwayDirection

Information concepts indicate the reference vocabulary and relations of an RunwayCenterlinePoint with other concepts. Data concepts indicate the reference features and properties for service architects, information/data architects and system implementers.

General

AMD data encoding can start when the necessary geographic information, aeronautical information and basic knowledge regarding the structure of created feature is available.

From the geographical point of view, the RunwayCenterlinePoint represents an operationally significant position on the centre line of a runway direction. This position is represented by one point and only this point shall be measured. The key attributes are the longitude, latitude and the elevation in reference with WGS-84. In the next part the process of converting the geographical information into the GML form thus into geometry information is described.

Based on Aeronatical Data Catalogue the required type of geometry for feature RunwayCenterlinePoint is 'Point'. The definition of geometry type Point can be found in the Table A1-9 Data types of the Aeronautical Data Catalogue.

AMD encoding

AIXM 5.1

ED-99 feature RunwayCenterlinePoint is mapped to the AIXM 5.1 as feature RunwayCentrelinePoint.

Geometry

In the AIXM 5.1 the geometry of the RunwayCentrelinePoint is point encoded as object ElevatedPoint.

For more information regarding AIXM 5.1 Geometry encoding follow 'AIXM data coding'.

GML considerations:

AIXM 5.1 is based on GML. Hence, obtained geographical location shall be transferred into a GML geometry object Point.

Figure 1 : RunwayCentrelinePoint

Time

Feature RunwayCentrelinePoint shall be established in accordance with coding rules and requirements listed in AIXM 5.1 Temporality Model.

AIXM 5.1 features

RunwayCenterlinePoint is encoded to the AIXM 5.1 as single feature RunwayCentrelinePoint.

All associations are shown in the UML Diagram (see below).

RunwayCentrelinePoint

http://aixm.aero/sites/aixm.aero/files/imce/AIXM51HTML/AIXM/Class_RunwayCentrelinePoint.html

UML Diagram (RunwayDirection)

http://aixm.aero/sites/aixm.aero/files/imce/AIXM51HTML/AIXM/Diagram_RunwayDirection.html

Content of example

This is a ficticious example. No feature was present at the aerodrome used.

The following AMD properties are not covered in the AIXM 5.1. coding example: vres, hres, integr. These are covered by an AIXM 5.1. extension.

Coding example - Structure of message

<AIXMBasicMessage  ...>
  <aixm:messageMetadata>
  </aixm:messageMetadata>
  <hasMember>
    <aixm:AirportHeliport gml:id="uuid.0b7a2688-ab95-47e6-82c2-23fe321c4a48">
  </hasMember>
  <hasMember>
    <aixm:Runway gml:id="uuid.de77ab7f-6bb1-43b4-817e-ce4465deb3a3">
  </hasMember>
  <hasMember>
    <aixm:RunwayCentrelinePoint gml:id="uuid.71228bfe-4b2a-4c04-94ef-b76aba948cc9">
  </hasMember>
  <hasMember>
    <aixm:RunwayDirection gml:id="uuid.62dd41c8-fa4e-4017-9d58-6c8432c35a03">
  </hasMember>
</AIXMBasicMessage>

Coding example - RunwayCenterlinePoint

  <hasMember>
    <aixm:RunwayCentrelinePoint gml:id="uuid.71228bfe-4b2a-4c04-94ef-b76aba948cc9">
      <gml:identifier codeSpace="urn:uuid:">71228bfe-4b2a-4c04-94ef-b76aba948cc9</gml:identifier>
      <aixm:timeSlice>
        <aixm:RunwayCentrelinePointTimeSlice gml:id="uuid.0bf931af-77d4-4d30-9a0e-99b3265960cd">
          <gml:validTime>
            <gml:TimePeriod gml:id="uuid.7db20d96-21ed-4472-80b5-02560d344ea0">
              <gml:beginPosition>2020-09-01T00:00:00Z</gml:beginPosition>
              <gml:endPosition indeterminatePosition="unknown" />
            </gml:TimePeriod>
          </gml:validTime>
          <aixm:interpretation>BASELINE</aixm:interpretation>
          <aixm:sequenceNumber>1</aixm:sequenceNumber>
          <aixm:correctionNumber>0</aixm:correctionNumber>
          <aixm:featureLifetime>
            <gml:TimePeriod gml:id="uuid.1387bc19-ed6c-42fd-909f-1a2e0527fa24">
              <gml:beginPosition>2020-09-01T00:00:00Z</gml:beginPosition>
              <gml:endPosition indeterminatePosition="unknown" />
            </gml:TimePeriod>
          </aixm:featureLifetime>
          <aixm:location>
            <aixm:ElevatedPoint gml:id="uuid.10c1fb09-4837-4755-9bb5-06a1208bb464" srsName="urn:ogc:def:crs:EPSG::4326">
              <gml:pos>50.1036375 14.2544378</gml:pos>
              <aixm:horizontalAccuracy uom="M">0.5</aixm:horizontalAccuracy>
              <aixm:elevation uom="M">352</aixm:elevation>
              <aixm:geoidUndulation uom="M">45.7</aixm:geoidUndulation>
              <aixm:verticalAccuracy uom="M">0.25</aixm:verticalAccuracy>
            </aixm:ElevatedPoint>
          </aixm:location>
          <aixm:onRunway xlink:href="#62dd41c8-fa4e-4017-9d58-6c8432c35a03" xlink:title="30" />
        </aixm:RunwayCentrelinePointTimeSlice>
      </aixm:timeSlice>
    </aixm:RunwayCentrelinePoint>
  </hasMember>

Table of properties of RunwayCenterlinePoint

	ED-99/DO-272	AIXM 5.1	Contained within example
	RunwayCenterlinePoint	RunwayCentrelinePoint	-
1	stfeat	featureLifetime.gml:TimePeriod.gml:beginPosition	yes
2	endfeat	featureLifetime.gml:TimePeriod.gml:endPosition	yes
3	stvalid	validTime.gml:TimePeriod.gml:beginPosition	yes
4	endvalid	validTime.gml:TimePeriod.gml:endPosition	yes
5	interp	interpretation	yes
6	feattype	Note: Can be implied	-
7	idnumber	identifier	yes
8	idarpt	onRunway.RunwayDirection.usedRunway.Runway.associatedAirportHeliport.AirportHeliport.locationIndicatorICAO	yes
9	idrwy	onRunway.RunwayDirection.usedRunway.Runway.designator	yes
10	vacc	location.ElevatedPoint.verticalAccuracy	yes
11	hacc	location.ElevatedPoint.horizontalAccuracy	yes
12	vres	location.ElevatedPoint.verticalResolution	no (part of AIXM extension)
13	hres	location.ElevatedPoint.horizontalResolution	no (part of AIXM extension)
14	source	source OR gmd:MD_Metadata.gmd:dataQualityInfo.gmd:lineage.gmd:LI_Lineage.gmd:processStep.gmd:LI_ProcessStep Note: Needs processor with a role set to "publisher".	yes
15	integr	integrity	no (part of AIXM extension)
16	revdate	revisionDate OR gmd:MD_Metadata.gmd:identificationInfo.gmd:MD_DataIdentification.gmd:citation.gmd:CI_Citation.gmd:date.gmd:CI_Date.gmd:date Note: also needs gmd:CI_Date.gmd:dateType.gmd:CI_DateTypeCode to be set to "revision"	yes
17	ellipse	Note: Can be calculated.	-
18	geound	location.ElevatedPoint.geoidUndulation	yes
19	elev	location.ElevatedPoint.elevation	yes
20	geopnt	location.ElevatedPoint	yes

Download feature RunwayCenterlinePoint:

BL_RunwayCenterlinePoint.xml

AMXM

https://ext.eurocontrol.int/aixm_confluence/display/AMX/RunwayCentrelinePoint

TBD