NTv2_DIstortions_GDA94-GDA2020_NSW - Unverified

GDA94 to GDA2020 distortion values (as bearing from True North and 2D geodesic-distance [also decomposed into dEast and dNorth])Calculated from GDA94 [CPD] GDA2020 transformation less GDA94 [CON] GDA2020 transformation.https://epsg.org/transformation_8447/GDA94-to-GDA2020-2.htmlhttps://epsg.org/transformation_8446/GDA94-to-GDA2020-3.html** Use with caution **Not an official DCS Spatial Services dataset. Calculations not verified.Compare any observations against calculations using an GDA94/MGA94 GDA2020/MGA2020 transformation method.See Examples under the heading Spatial Collaboration Portal – Projection Service at https://www.spatial.nsw.gov.au/surveying/geodesy/conversion_software Metadata\n\n\n \n \n Content Title\n \n \n NTv2 Distortions GDA94-GDA2020 NSW - Unverified\n \n \n \n \n Content Type\n \n \n Web Map\n \n \n \n \n Description\n \n \n CPD less CON transformation for GDA94 to GDA2020\n \n \n \n \n Initial Publication Date\n \n \n 27/01/2022\n \n \n \n \n Data Currency\n \n \n 27/01/2022\n \n \n \n \n Data Update Frequency\n \n \n Other\n \n \n \n \n Content\n Source\n \n \n https://epsg.org/transformation_8447/GDA94-to-GDA2020-2.htmlhttps://epsg.org/transformation_8446/GDA94-to-GDA2020-3.html\n \n \n \n \n File Type\n \n \n Map Feature Service\n \n \n \n \n Attribution\n \n \n .\n \n \n \n \n Data\n Theme, Classification or Relationship to other Datasets\n \n \n .\n \n \n \n \n Accuracy\n \n \n .\n \n \n \n \n Spatial Reference System (dataset)GDA2020\n \n \n \n \n Spatial Reference System (web service)\n \n \n EPSG:3857\n \n \n \n \n WGS84 Equivalent To\n \n \n GDA2020\n \n \n Content\n Lineage\n \n \n \n \n \n Data Classification\n \n \n Unclassified\n \n \n \n \n Data Access Policy\n \n \n Open\n \n \n \n \n Data\n Quality\n \n \n for testing only - not a verified or official data source\n \n \n \n \n Terms and Conditions\n \n \n Creative Commons\n \n \n \n \n Standard\n and Specification\n \n \n .\n \n \n \n \n Data Custodian\n \n \n NSW Spatial Services\n \n \n \n \n Point of Contact\n \n \n Please contact us via the Spatial Services Customer Hub\n \n \n \n \n Data\n Aggregator\n \n \n .\n \n \n \n \n Data\n Distributor\n \n \n .\n \n \n \n \n Additional\n Supporting Information\n \n \n .\n \n \n \n \n TRIM Number\n \n \n .\n \n \nGDA94至GDA2020变形值（以真北方位角和二维大地距离表示，二维大地距离亦可分解为东向偏差dEast与北向偏差dNorth），通过GDA94[CPD]到GDA2020的转换减去GDA94[CON]到GDA2020的转换计算得到。 https://epsg.org/transformation_8447/GDA94-to-GDA2020-2.html https://epsg.org/transformation_8446/GDA94-to-GDA2020-3.html **谨慎使用** 本数据集并非新南威尔士州空间服务局官方数据集，计算结果未经验证。请将任何观测结果与使用GDA94/MGA94至GDA2020/MGA2020转换方法得到的计算结果进行比对。示例请参见https://www.spatial.nsw.gov.au/surveying/geodesy/conversion_software 网页中"空间协作门户——投影服务"栏目下的内容。 元数据 内容标题：NTv2变形值 GDA94-GDA2020 新南威尔士州——未验证 内容类型：Web地图 描述：GDA94至GDA2020的CPD转换减去CON转换结果 首次发布日期：2022年1月27日 数据时效性：2022年1月27日 数据更新频率：其他 内容来源： https://epsg.org/transformation_8447/GDA94-to-GDA2020-2.html https://epsg.org/transformation_8446/GDA94-to-GDA2020-3.html 文件类型：地图要素服务 署名：无 数据主题、分类或与其他数据集的关联：无 精度：无相关信息 空间参考系统（数据集）：GDA2020 空间参考系统（Web服务）：EPSG:3857 WGS84等效基准：GDA2020 内容谱系：无相关信息 数据密级：非密 数据访问政策：开放 数据质量：仅用于测试，非经验证的官方数据源 条款与条件：知识共享（Creative Commons） 标准与规范：无相关信息 数据保管方：新南威尔士州空间服务局（NSW Spatial Services） 联系人：请通过空间服务客户中心联系我们 数据聚合方：无 数据分发方：无 附加支持信息：无相关信息 TRIM编号：无