ISO INTERNATIONAL STANDARD 19170-1 First edition 2021-05 Geographic information Discrete Global Grid Systems Specifications Part 1: Core Reference System and Operations, and Equal Area Earth Reference System Information géographique -Spécifications des Systemes de Grilles Globales Discretes (DGGS) Partie 1: Systeme de réferences et opérations de base, et systeme de référence terrestre a surface équivalente Reference number IS0 19170-1:2021(E) ISO @ ISO 2021 IS0 19170-1:2021(E) COPYRIGHTPROTECTED DOCUMENT IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either Iso at the address below or Iso's member body in the country of the requester. IsO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved