EPSG:8446

GDA94 to GDA2020 (3)

Attributes

Geodetic CRS: GDA94

Datum: Geocentric Datum of Australia 1994

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: OGP

Information source: GDA2020 Technical Manual and ICSM Datum Technical Fact Sheet TN1 (http://www.icsm.gov.au).

Revision date: 2019-09-17

Scope: Conformal transformation of GDA94 coordinates that have been derived through GNSS CORS.

Remarks: Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.

Method: NTv2

Area of use: Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria.

Description: GDA94_GDA2020_conformal.gsb

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Definition: OGP XML

<div class="syntax"><pre><span class="cp">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span> <span class="nt">&lt;gml:Transformation</span> <span class="na">xmlns:epsg=</span><span class="s">&quot;urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset&quot;</span> <span class="na">xmlns:gco=</span><span class="s">&quot;http://www.isotc211.org/2005/gco&quot;</span> <span class="na">xmlns:gmd=</span><span class="s">&quot;http://www.isotc211.org/2005/gmd&quot;</span> <span class="na">xmlns:gml=</span><span class="s">&quot;http://www.opengis.net/gml/3.2&quot;</span> <span class="na">xmlns:xlink=</span><span class="s">&quot;http://www.w3.org/1999/xlink&quot;</span> <span class="na">gml:id=</span><span class="s">&quot;iogp-op-8446&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;gml:metaDataProperty&gt;</span> <span class="nt">&lt;epsg:CommonMetaData&gt;</span> <span class="nt">&lt;epsg:type&gt;</span>transformation<span class="nt">&lt;/epsg:type&gt;</span> <span class="nt">&lt;epsg:alias</span> <span class="na">alias=</span><span class="s">&quot;539&quot;</span> <span class="na">code=</span><span class="s">&quot;8512&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::1046&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;epsg:alias</span> <span class="na">alias=</span><span class="s">&quot;GDA94 to GDA2020 [GA v2]&quot;</span> <span class="na">code=</span><span class="s">&quot;8513&quot;</span> <span class="na">codeSpace=</span><span class="s">&quot;urn:ogc:def:naming-system:EPSG::1047&quot;</span><span class="nt">&gt;</span> <span class="nt">&lt;epsg:remarks&gt;</span>EPSG variants 2 and 3 transposed in ISO as [GA v3] and [GAv2] respectively.<span class="nt">&lt;/epsg:remarks&gt;</span> <span class="nt">&lt;/epsg:alias&gt;</span> <span class="nt">&lt;epsg:informationSource&gt;</span>GDA2020 Technical Manual and ICSM Datum Technical Fact Sheet TN1 (http://www.icsm.gov.au).<span class="nt">&lt;/epsg:informationSource&gt;</span> <span class="nt">&lt;epsg:revisionDate&gt;</span>2019-09-17<span class="nt">&lt;/epsg:revisionDate&gt;</span> <span class="nt">&lt;epsg:changes&gt;</span> <span class="nt">&lt;epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:change-request:EPSG::2018.009&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;epsg:changeID</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:change-request:EPSG::2019.033&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/epsg:changes&gt;</span> <span class="nt">&lt;epsg:show&gt;</span>true<span class="nt">&lt;/epsg:show&gt;</span> <span class="nt">&lt;epsg:isDeprecated&gt;</span>false<span class="nt">&lt;/epsg:isDeprecated&gt;</span> <span class="nt">&lt;/epsg:CommonMetaData&gt;</span> <span class="nt">&lt;/gml:metaDataProperty&gt;</span> <span class="nt">&lt;gml:metaDataProperty&gt;</span> <span class="nt">&lt;epsg:CoordinateOperationMetaData&gt;</span> <span class="nt">&lt;epsg:variant&gt;</span>3<span class="nt">&lt;/epsg:variant&gt;</span> <span class="nt">&lt;/epsg:CoordinateOperationMetaData&gt;</span> <span class="nt">&lt;/gml:metaDataProperty&gt;</span> <span class="nt">&lt;gml:identifier</span> <span class="na">codeSpace=</span><span class="s">&quot;IOGP&quot;</span><span class="nt">&gt;</span>urn:ogc:def:coordinateOperation:EPSG::8446<span class="nt">&lt;/gml:identifier&gt;</span> <span class="nt">&lt;gml:name&gt;</span>GDA94 to GDA2020 (3)<span class="nt">&lt;/gml:name&gt;</span> <span class="nt">&lt;gml:remarks&gt;</span>Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.<span class="nt">&lt;/gml:remarks&gt;</span> <span class="nt">&lt;gml:domainOfValidity</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:area:EPSG::2575&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:scope&gt;</span>Conformal transformation of GDA94 coordinates that have been derived through GNSS CORS.<span class="nt">&lt;/gml:scope&gt;</span> <span class="nt">&lt;gml:operationVersion&gt;</span>ICSM-Aus NTv2 Conf<span class="nt">&lt;/gml:operationVersion&gt;</span> <span class="nt">&lt;gml:coordinateOperationAccuracy&gt;</span> <span class="nt">&lt;gmd:DQ_RelativeInternalPositionalAccuracy&gt;</span> <span class="nt">&lt;gmd:result&gt;</span> <span class="nt">&lt;gmd:DQ_QuantitativeResult&gt;</span> <span class="nt">&lt;gmd:valueUnit</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:uom:EPSG::9001&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gmd:value&gt;</span> <span class="nt">&lt;gco:Record&gt;</span> <span class="nt">&lt;gco:Decimal&gt;</span>0.05<span class="nt">&lt;/gco:Decimal&gt;</span> <span class="nt">&lt;/gco:Record&gt;</span> <span class="nt">&lt;/gmd:value&gt;</span> <span class="nt">&lt;/gmd:DQ_QuantitativeResult&gt;</span> <span class="nt">&lt;/gmd:result&gt;</span> <span class="nt">&lt;/gmd:DQ_RelativeInternalPositionalAccuracy&gt;</span> <span class="nt">&lt;/gml:coordinateOperationAccuracy&gt;</span> <span class="nt">&lt;gml:sourceCRS</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:crs:EPSG::4283&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:targetCRS</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:crs:EPSG::7844&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:method</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:method:EPSG::9615&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;gml:parameterValue&gt;</span> <span class="nt">&lt;gml:ParameterValue&gt;</span> <span class="nt">&lt;gml:valueFile&gt;</span>GDA94_GDA2020_conformal.gsb<span class="nt">&lt;/gml:valueFile&gt;</span> <span class="nt">&lt;gml:operationParameter</span> <span class="na">xlink:href=</span><span class="s">&quot;urn:ogc:def:parameter:EPSG::8656&quot;</span> <span class="nt">/&gt;</span> <span class="nt">&lt;/gml:ParameterValue&gt;</span> <span class="nt">&lt;/gml:parameterValue&gt;</span> <span class="nt">&lt;/gml:Transformation&gt;</span> </pre></div>
<?xml version="1.0" encoding="UTF-8"?>
 <gml:Transformation xmlns:epsg="urn:x-ogp:spec:schema-xsd:EPSG:1.0:dataset" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:xlink="http://www.w3.org/1999/xlink" gml:id="iogp-op-8446">
  <gml:metaDataProperty>
    <epsg:CommonMetaData>
      <epsg:type>transformation</epsg:type>
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      <epsg:alias alias="GDA94 to GDA2020 [GA v2]" code="8513" codeSpace="urn:ogc:def:naming-system:EPSG::1047">
        <epsg:remarks>EPSG variants 2 and 3 transposed in ISO as [GA v3] and [GAv2] respectively.</epsg:remarks>
      </epsg:alias>
      <epsg:informationSource>GDA2020 Technical Manual and ICSM Datum Technical Fact Sheet TN1 (http://www.icsm.gov.au).</epsg:informationSource>
      <epsg:revisionDate>2019-09-17</epsg:revisionDate>
      <epsg:changes>
        <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2018.009" />
        <epsg:changeID xlink:href="urn:ogc:def:change-request:EPSG::2019.033" />
      </epsg:changes>
      <epsg:show>true</epsg:show>
      <epsg:isDeprecated>false</epsg:isDeprecated>
    </epsg:CommonMetaData>
  </gml:metaDataProperty>
  <gml:metaDataProperty>
    <epsg:CoordinateOperationMetaData>
      <epsg:variant>3</epsg:variant>
    </epsg:CoordinateOperationMetaData>
  </gml:metaDataProperty>
  <gml:identifier codeSpace="IOGP">urn:ogc:def:coordinateOperation:EPSG::8446</gml:identifier>
  <gml:name>GDA94 to GDA2020 (3)</gml:name>
  <gml:remarks>Gives identical results to Helmert transformation GDA94 to GDA2020 (1) (code 8048). See GDA94 to GDA2020 (2) (code 8447) for alternative with local distortion modelling included. GDA2020 Technical Manual and fact sheet T1 give guidance on which to use.</gml:remarks>
  <gml:domainOfValidity xlink:href="urn:ogc:def:area:EPSG::2575" />
  <gml:scope>Conformal transformation of GDA94 coordinates that have been derived through GNSS CORS.</gml:scope>
  <gml:operationVersion>ICSM-Aus NTv2 Conf</gml:operationVersion>
  <gml:coordinateOperationAccuracy>
    <gmd:DQ_RelativeInternalPositionalAccuracy>
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          <gmd:valueUnit xlink:href="urn:ogc:def:uom:EPSG::9001" />
          <gmd:value>
            <gco:Record>
              <gco:Decimal>0.05</gco:Decimal>
            </gco:Record>
          </gmd:value>
        </gmd:DQ_QuantitativeResult>
      </gmd:result>
    </gmd:DQ_RelativeInternalPositionalAccuracy>
  </gml:coordinateOperationAccuracy>
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    <gml:ParameterValue>
      <gml:valueFile>GDA94_GDA2020_conformal.gsb</gml:valueFile>
      <gml:operationParameter xlink:href="urn:ogc:def:parameter:EPSG::8656" />
    </gml:ParameterValue>
  </gml:parameterValue>
</gml:Transformation>