v1.0.6

ApronElement encoding

Owned by WILSON Scott
Last updated: 2021 Mar 31

This section provides ‘Apron Element’ feature data encoding guidance.


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, several points of the outer border of the ApronElement need to be captured. The key attributes are the longitude, latitude in reference to WGS-84 and the elevation of each captured point. In the next part the process of converting the geographical information into the GML form, thus into geometry information is described.

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

AMD encoding

AIXM 5.1

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

Geometry

In the AIXM 5.1 the geometry of the feature ApronElement is polygon encoded as object ElevatedSurface.

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

One of the reasons to create multiple ApronElements under one Apron may be the diversity of the surface characteristics of the Apron. One part of the Apron can have different usage or than other part of the Apron.

GML considerations

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


Figure 1 : ApronElement

Time

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

AIXM 5.1 features

ApronElement is encoded to the AIXM 5.1 as ApronElement feature.

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

ApronElement feature

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

UML Diagram (Apron)

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

Content of example

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:Apron gml:id="uuid.61843a22-c959-42e7-8a7b-1a40024a492c">
  </hasMember>
  <hasMember>
    <aixm:ApronElement gml:id="uuid.9e4a565e-9c35-49c6-9ecf-aa6b8c341d56">
  </hasMember>
</AIXMBasicMessage>

Coding example - ApronElement

  <hasMember>
    <aixm:ApronElement gml:id="uuid.9e4a565e-9c35-49c6-9ecf-aa6b8c341d56">
      <gml:identifier codeSpace="urn:uuid:">9e4a565e-9c35-49c6-9ecf-aa6b8c341d56</gml:identifier>
      <aixm:timeSlice>
        <aixm:ApronElementTimeSlice gml:id="uuid.b334cbd4-073c-4f43-8f83-8b8777ac5eb0">
          <gml:validTime>
            <gml:TimePeriod gml:id="uuid.e04a7352-cbc4-407c-8d75-0a3f1f17e3b6">
              <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.e0569991-2576-4e1a-b5e8-67c5c6f186a3">
              <gml:beginPosition>2020-09-01T00:00:00Z</gml:beginPosition>
              <gml:endPosition indeterminatePosition="unknown" />
            </gml:TimePeriod>
          </aixm:featureLifetime>
          <aixm:type>NORMAL</aixm:type>
          <aixm:associatedApron xlink:href="#61843a22-c959-42e7-8a7b-1a40024a492c" xlink:title="APRON NORTH" />
          <aixm:surfaceProperties>
            <aixm:SurfaceCharacteristics gml:id="uuid.8478a76e-4642-43ac-aeb3-ab4d3ce349c5">
              <aixm:composition>CONC_ASPH</aixm:composition>
              <aixm:classPCN>68</aixm:classPCN>
              <aixm:pavementTypePCN>RIGID</aixm:pavementTypePCN>
              <aixm:pavementSubgradePCN>B</aixm:pavementSubgradePCN>
              <aixm:maxTyrePressurePCN>X</aixm:maxTyrePressurePCN>
              <aixm:evaluationMethodPCN>TECH</aixm:evaluationMethodPCN>
            </aixm:SurfaceCharacteristics>
          <aixm:extent>
            <aixm:ElevatedSurface gml:id="uuid.674bce51-0be1-465e-a9a1-34307fcceaaf" srsName="urn:ogc:def:crs:EPSG::4326">
              <gml:patches>
                <gml:PolygonPatch>
                  <gml:exterior>
                    <gml:Ring>
                      <gml:curveMember>
                        <gml:Curve gml:id="uuid.e8a7f3a3-e7f0-45fe-981c-b34946242923">
                          <gml:segments>
                            <gml:GeodesicString interpolation="geodesic">
                              <gml:posList>50.10866774 14.26049197 50.10884616 14.2600745 50.10844364 14.25964329 50.10693926 14.25803641 50.10690973 14.25800486 50.10685694 14.25812447 50.10680606 14.25823914 50.10677462 14.25831049 50.10673627 14.25839689 50.10672678 14.25841858 50.10674094 14.25843371 50.10677801 14.25847336 50.10681509 14.25851315 50.10685214 14.25855267 50.10688921 14.25859232 50.10692626 14.25863184 50.10696333 14.25867149 50.1070006 14.25871138 50.10703759 14.2587512 50.10707461 14.25879044 50.10711185 14.25882991 50.10714873 14.25886961 50.10718571 14.25890928 50.10722237 14.25894846 50.10725961 14.25898807 50.10729654 14.25902719 50.10733359 14.25906671 50.10737065 14.25910623 50.10740783 14.25914614 50.10744487 14.25918552 50.10748195 14.25922531 50.1075189 14.25926471 50.10755596 14.25930436 50.10759316 14.25934441 50.1076302 14.25938379 50.10766729 14.25942372 50.10770425 14.25946326 50.10774139 14.25950276 50.10777847 14.25954255 50.10781562 14.25958205 50.10788953 14.25966098 50.1079266 14.25970064 50.10796375 14.25974028 50.10800069 14.25977954 50.10803788 14.25981959 50.10811204 14.25989819 50.10818616 14.25997736 50.10822009 14.26001378 50.10822324 14.26001716 50.10826021 14.26005683 50.10829441 14.26009307 50.10829715 14.26009609 50.10833438 14.26013557 50.10837137 14.26017539 50.10840827 14.26021522 50.10844541 14.26025472 50.10851957 14.26033431 50.10859375 14.26041319 50.10866774 14.26049197</gml:posList>
                            </gml:GeodesicString>
                          </gml:segments>
                        </gml:Curve>
                      </gml:curveMember>
                    </gml:Ring>
                  </gml:exterior>
                </gml:PolygonPatch>
              </gml:patches>
              <aixm:horizontalAccuracy uom="M">1</aixm:horizontalAccuracy>
              <aixm:elevation uom="M">376</aixm:elevation>
              <aixm:verticalAccuracy uom="M">0.5</aixm:verticalAccuracy>
            </aixm:ElevatedSurface>
          </aixm:extent>
          <aixm:availability>
            <aixm:ApronAreaAvailability gml:id="uuid.442669ef-7063-4302-a53a-6e2555db284e">
              <aixm:operationalStatus>NORMAL</aixm:operationalStatus>
              <aixm:usage>
                <aixm:ApronAreaUsage gml:id="uuid.737db63d-10e7-400f-b733-e63ab0dd3d45">
                  <aixm:type>FORBID</aixm:type>
                  <aixm:selection>
                    <aixm:ConditionCombination gml:id="uuid.4365a588-23e7-4fab-b640-67105b43b83d">
                      <aixm:aircraft>
                        <aixm:AircraftCharacteristic gml:id="uuid.16073e74-f56c-4649-80f0-612c99051ecc">
                          <aixm:typeAircraftICAO>B748</aixm:typeAircraftICAO>
                        </aixm:AircraftCharacteristic>
                      </aixm:aircraft>
                    </aixm:ConditionCombination>
                  </aixm:selection>
                </aixm:ApronAreaUsage>
              </aixm:usage>
            </aixm:ApronAreaAvailability>
          </aixm:availability>
        </aixm:ApronElementTimeSlice>
      </aixm:timeSlice>
    </aixm:ApronElement>
  </hasMember>


Download feature ApronElement:

BL_ApronElement.xml

 



Status: Published