ISO INTERNATIONAL STANDARD 22090-3 Secondedition 2014-03-01 Ships and marine technology - Transmitting heading devices (THDs) Part 3: GNSS principles Navires et technologie maritime - Dispositifs de transmission de données de pilotage - Partie 3: Principes pour un systeme global de navigation par satellites Reference number ISO 22090-3:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 22090-3:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax +4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic Not for Resale IS0 22090-3:2014(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Performance and requirements .3 4.1 Functionality. .3 4.2 Continuous operation ..4 4.3 Presentation of information 4 4.4 Heading output alignment 4.5 Compensation forbrief GNSS signal interruption 4 4.6 Settlingtime ..4 4.7 Heading information 4 4.8 Alert signal .4 4.9 Interface. .4 5 Accuracy .5 5.1 General. .5 5.2 Accuracy of transmission data 5 5.3 Static error (settle point error) .5 5.4 Dynamic error. 5.5 Follow-up error .5 6 Type tests .5 6.1 General. .5 6.2 Organization of test conditions .5 6.3 Settling time test. .6 6.4 Static error test .6 6.5 Dynamictest .6 6.6 Follow-up error test .7 6.7 Back-up test .7 6.8 Environmental test .7 6.9 Electromagnetic compatibility test .8 6.10 Interfacetest. 6.11 Malfunction test .8 7 Marking and identification. ..8 Annex A (informative) Equivalent requirements in Is0 22090-3 and IM0 Resolution MSC.116 (73) ..9 Bibliography ..10 iii thout license from IHS Not for Resale