/
StandGuidanceLine encoding

v1.0.6

StandGuidanceLine encoding

Owned by WILSON Scott
Last updated: 2021 Mar 31

This section provides ‘StandGuidanceLine’ 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 StandGuidanceLine represents a line connecting two or multiple points used to guide aircraft from the taxiway to the stand/parking area. For GuidanceLine two or more points 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 Guidance Line is 'Line'. The definition of Line can be found in the Table A1-9 Data types of the Aeronautical Data Catalogue.

AMD encoding

AIXM 5.1

ED-99 feature StandGuidanceLine is mapped to the AIXM 5.1 as feature Guidance Line Marking in association with feature GuidanceLine of type "GATE_TLANE" even though the feature Guidance Line has geometry component on its own.

Geometry

In the AIXM 5.1 the geometry of the GuidanceLine is curve encoded as object ElevatedCurve.

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 locations shall be transferred into a GML geometry object GeodesicString.

Figure 1 : StandGuidanceLine

Time

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

AIXM 5.1 features

StandGuidanceLine is mapped to the AIXM 5.1 as feature Guidance Line Marking in association with feature GuidanceLine of type "GATE_TLANE".

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

GuidanceLineMarking feature

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

UML Diagram (GuidanceLine)

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

UML Diagram (Markings/SurfaceMarking)

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

Content of example

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

Coding example - Structure of message

<AIXMBasicMessage  ...>
  <aixm:messageMetadata>
  </aixm:messageMetadata>
  <hasMember>
    <aixm:AircraftStand gml:id="uuid.32108ee2-f6c0-4dcf-b93e-f13167165f7b">
  </hasMember>
  <hasMember>
    <aixm:AirportHeliport gml:id="uuid.0b7a2688-ab95-47e6-82c2-23fe321c4a48">
  </hasMember>
  <hasMember>
    <aixm:GuidanceLine gml:id="uuid.acf9843b-4fc5-4b7e-acc2-89868a157129">
  </hasMember>
  <hasMember>
    <aixm:GuidanceLineMarking gml:id="uuid.9cff89b2-d5a8-4ac7-b22e-18eefd7904d3">
  </hasMember>
  <hasMember>
    <aixm:Taxiway gml:id="uuid.aee1b1c2-ff7f-49e7-ae7b-f9a25750504a">
  </hasMember>
</AIXMBasicMessage>

Coding example - StandGuidanceLine

  <hasMember>
    <aixm:GuidanceLineMarking gml:id="uuid.9cff89b2-d5a8-4ac7-b22e-18eefd7904d3">
      <gml:identifier codeSpace="urn:uuid:">9cff89b2-d5a8-4ac7-b22e-18eefd7904d3</gml:identifier>
      <aixm:timeSlice>
        <aixm:GuidanceLineMarkingTimeSlice gml:id="uuid.518917b3-d17c-4685-a329-e492c93e663c">
          <gml:validTime>
            <gml:TimePeriod gml:id="uuid.6565be13-6a39-4523-90cb-8b740ef2337c">
              <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.c923b3bc-dad3-41ed-98fe-52ad2c889ea9">
              <gml:beginPosition>2020-09-01T00:00:00Z</gml:beginPosition>
              <gml:endPosition indeterminatePosition="unknown" />
            </gml:TimePeriod>
          </aixm:featureLifetime>
          <aixm:element>
            <aixm:MarkingElement gml:id="uuid.5221d9ca-3d0f-4d68-8f1a-d3300abc36ca">
              <aixm:colour>YELLOW</aixm:colour>
              <aixm:style>SOLID</aixm:style>
              <aixm:extent_curveExtent>
                <aixm:ElevatedCurve gml:id="uuid.34d0bdaf-7633-4ee3-927a-2ddb32d95a80" srsName="urn:ogc:def:crs:EPSG::4326">
                  <gml:segments>
                    <gml:GeodesicString interpolation="geodesic">
                      <gml:posList>50.10803381 14.25999947 50.10847917 14.25899128</gml:posList>
                    </gml:GeodesicString>
                  </gml:segments>
                  <aixm:horizontalAccuracy uom="M">0.5</aixm:horizontalAccuracy>
                  <aixm:elevation uom="M">376</aixm:elevation>
                  <aixm:verticalAccuracy uom="M">0.5</aixm:verticalAccuracy>
                </aixm:ElevatedCurve>
              </aixm:extent_curveExtent>
            </aixm:MarkingElement>
          </aixm:element>
          <aixm:markedGuidanceLine xlink:href="#acf9843b-4fc5-4b7e-acc2-89868a157129" />
        </aixm:GuidanceLineMarkingTimeSlice>
      </aixm:timeSlice>
    </aixm:GuidanceLineMarking>
  </hasMember>


Download feature StandGuidanceLine:

BL_StandGuidanceLine.xml

Status: Published