RunwayThreshold encoding

This section provides ‘RunwayThreshold’ 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, the RunwayThreshold represents an operationally significant position on the centre line of a runway direction located on the threshold. 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 RunwayCentrelinePoint 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 RunwayThreshold is mapped to the AIXM 5.1 as feature RunwayCenterline Point with property Role set to "THR" or "DISTHR".

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 : RunwayThreshold

Time

Feature RunwayCenterlinePoint 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 feature RunwayCenterlinePoint.

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

RunwayCenterlinePoint

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

UML Diagram (Runway Direction)

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

Content of example

The following AMD properties are not covered in the AIXM 5.1. coding example: vres, hres, integr, lvo, alstype, tohlight. 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.3f4952ee-a237-47d9-ab33-23f46a6332b1">
  </hasMember>
  <hasMember>
    <aixm:RunwayCentrelinePoint gml:id="uuid.8f8fe257-6b3c-4abd-a88d-be7e807c1664">
  </hasMember>
  <hasMember>
    <aixm:RunwayDirection gml:id="uuid.d8cafae9-7055-4171-bf62-9897162d8e75">
  </hasMember>
  <hasMember>
    <aixm:VisualGlideSlopeIndicator gml:id="uuid.401517f5-c06e-4fff-8e29-34246a09de9c">
  </hasMember>
</AIXMBasicMessage>

Coding example - RunwayThreshold

  <hasMember>
    <aixm:RunwayCentrelinePoint gml:id="uuid.8f8fe257-6b3c-4abd-a88d-be7e807c1664">
      <gml:identifier codeSpace="urn:uuid:">8f8fe257-6b3c-4abd-a88d-be7e807c1664</gml:identifier>
      <aixm:timeSlice>
        <aixm:RunwayCentrelinePointTimeSlice gml:id="uuid.60d95649-e161-4273-9113-eb55b52d6da5">
          <gml:validTime>
            <gml:TimePeriod gml:id="uuid.760b5aca-eccd-4e8e-b3d2-408139ce6bd7">
              <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.5ff8524d-5c87-42d5-881e-b90046b90eca">
              <gml:beginPosition>2020-09-01T00:00:00Z</gml:beginPosition>
              <gml:endPosition indeterminatePosition="unknown" />
            </gml:TimePeriod>
          </aixm:featureLifetime>
          <aixm:role>THR</aixm:role>
          <aixm:location>
            <aixm:ElevatedPoint gml:id="uuid.8fa9e449-dc5e-4acf-914b-19eb75bb25f4" srsName="urn:ogc:def:crs:EPSG::4326">
              <gml:pos>50.10183611 14.2263</gml:pos>
              <aixm:horizontalAccuracy uom="M">0.5</aixm:horizontalAccuracy>
              <aixm:elevation uom="M">366</aixm:elevation>
              <aixm:geoidUndulation uom="M">45.8</aixm:geoidUndulation>
              <aixm:verticalAccuracy uom="M">0.25</aixm:verticalAccuracy>
            </aixm:ElevatedPoint>
          </aixm:location>
          <aixm:onRunway xlink:href="#d8cafae9-7055-4171-bf62-9897162d8e75" xlink:title="06" />
          <aixm:associatedDeclaredDistance>
            <aixm:RunwayDeclaredDistance gml:id="uuid.d61243d3-b21d-436b-954c-cacc0d21dca6">
              <aixm:type>TORA</aixm:type>
              <aixm:declaredValue>
                <aixm:RunwayDeclaredDistanceValue gml:id="uuid.5e99c2c9-a81a-4f40-a2ea-24365e42ad75">
                  <aixm:distance uom="M">3715</aixm:distance>
                </aixm:RunwayDeclaredDistanceValue>
              </aixm:declaredValue>
            </aixm:RunwayDeclaredDistance>
          </aixm:associatedDeclaredDistance>
          <aixm:associatedDeclaredDistance>
            <aixm:RunwayDeclaredDistance gml:id="uuid.d4a3d3fc-151d-4149-93cc-1c7471dee35d">
              <aixm:type>TODA</aixm:type>
              <aixm:declaredValue>
                <aixm:RunwayDeclaredDistanceValue gml:id="uuid.3f19f1c7-8202-4a2d-854f-31a5a692778d">
                  <aixm:distance uom="M">4015</aixm:distance>
                </aixm:RunwayDeclaredDistanceValue>
              </aixm:declaredValue>
            </aixm:RunwayDeclaredDistance>
          </aixm:associatedDeclaredDistance>
          <aixm:associatedDeclaredDistance>
            <aixm:RunwayDeclaredDistance gml:id="uuid.bb2338c8-9d96-45e5-9a25-46d475aad07d">
              <aixm:type>ASDA</aixm:type>
              <aixm:declaredValue>
                <aixm:RunwayDeclaredDistanceValue gml:id="uuid.548e56aa-c695-4676-bbe3-04757e5eaa85">
                  <aixm:distance uom="M">3715</aixm:distance>
                </aixm:RunwayDeclaredDistanceValue>
              </aixm:declaredValue>
            </aixm:RunwayDeclaredDistance>
          </aixm:associatedDeclaredDistance>
          <aixm:associatedDeclaredDistance>
            <aixm:RunwayDeclaredDistance gml:id="uuid.9e9b1018-4e21-4223-a076-0353ba868aaa">
              <aixm:type>LDA</aixm:type>
              <aixm:declaredValue>
                <aixm:RunwayDeclaredDistanceValue gml:id="uuid.3a9dab5d-ba9b-4345-b288-9d62a08b51bc">
                  <aixm:distance uom="M">3715</aixm:distance>
                </aixm:RunwayDeclaredDistanceValue>
              </aixm:declaredValue>
            </aixm:RunwayDeclaredDistance>
          </aixm:associatedDeclaredDistance>
        </aixm:RunwayCentrelinePointTimeSlice>
      </aixm:timeSlice>
    </aixm:RunwayCentrelinePoint>
  </hasMember>

Download feature RunwayThreshold:

BL_RunwayThreshlod.xml

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