Transformations and OSGM02 user guide - Leica Geosystems

More documents

Recommendations

Info

Data copyrightUser guide copyrightTrademarksCopyright and any database right or other intellectual property right in the OSTN02 data available from this site,however it is made available, belongs to Ordnance Survey (and is therefore Crown copyright). Copyright and anydatabase right or other intellectual property right in OSGM02 data available from this site, however it is made available,belongs jointly to Ordnance Survey, Ordnance Survey Northern Ireland (and is protected by Crown copyright) andOrdnance Survey Ireland.Ordnance Survey and (where relevant) Ordnance Survey Northern Ireland and Ordnance Survey Ireland permit users tocopy or incorporate copyrighted material from both OSTN02, the OSi/OSNI polynomial transformation, or OSGM02either onto their own PCs or into their software. However, this is dependant on the appropriate copyright notice beingdisplayed in the software. The appropriate notices are '© Ordnance Survey Ireland, 2002' or '© Crown copyright 2002.All rights reserved.' as applicable. The appropriate mapping agency logo must also appear next to the copyrightnotice. Details of mapping agency logos are found in the style guides available on the web site.This user guide is © Crown copyright 2002. All rights reserved. It accompanies OSTN02 and OSGM02 data to allow youto make effective use of the data. Any part of this guide may be copied for business use. Business use is defined asactions related to business decision making or as part of day-to-day operations associated with the running of thebusiness. No part of the guide may be copied or incorporated in products, services or publications a user generates foronward sale or as free promotional support material, without the prior written permission of Ordnance Survey.Ordnance Survey, the OS Symbol and OSGB36 are registered trademarks and OSTN02 is a trademark ofOrdnance Survey, the national mapping agency of Great Britain. OSGM02 is a trademark of Ordnance Survey,Ordnance Survey Northern Ireland and Ordnance Survey Ireland. Ordnance Survey Northern Ireland, OSNI and theOSNI Symbol are trademarks of Ordnance Survey Northern Ireland. The OSi Symbol is a registered trademark ofOrdnance Survey Ireland. Ordnance Survey Ireland and OSi are trademarks of Ordnance Survey Ireland.Transformations and OSGM02 user guide prefacev2.1 9/2002 © crown copyrightPage 3
ContentsChapter 1 Introduction ..........................................................................................................................................................................................6Coordinate transformations and the Geoid model ...............................................................................................................................6OSTN02 ................................................................................................................................................................................................7OSi/OSNI polynomial transformation ....................................................................................................................................................7Ordnance Survey Geoid model: OSGM02 ...........................................................................................................................................8ETRS89 explained ................................................................................................................................................................................9Benefits.................................................................................................................................................................................................9Applications........................................................................................................................................................................................10Chapter 2Data overview.....................................................................................................................................................................................11Basic principles..................................................................................................................................................................................11Data structure.....................................................................................................................................................................................12OSTN02/OSGM02 within Great Britain – format and layout of the data........................................................................................12OSGM02 within Northern Ireland – format and layout of the data ................................................................................................13OSGM02 within the Republic of Ireland – format and layout of the data ......................................................................................15Chapter 3 Ordnance Survey transformations and OSGM02 explained ..............................................................................................................18OSTN02 ..............................................................................................................................................................................................18Transforming ETRS89 coordinates to OSGB36 National Grid: overview ......................................................................................18Calculating which data record to use ...........................................................................................................................................18Procedure for transforming ETRS89 to OSGB36 coordinates ......................................................................................................19Inverse transformation (OSGB36 to ETRS89) ...............................................................................................................................22The OSi/OSNI polynomial transformation ...........................................................................................................................................23Table of coefficients for OSi/OSNI polynomial transformation ......................................................................................................24The Ordnance Survey Geoid model: OSGM02 ..................................................................................................................................25Chapter 4Quality statement................................................................................................................................................................................27Coverage............................................................................................................................................................................................27Accuracy of Ordnance Survey transformations..................................................................................................................................27Accuracy of OSGM02.........................................................................................................................................................................28Transformations and OSGM02 user guide contentsv2.1 9/2002 © crown copyrightPage 4
Page 2 and 3: PrefaceThis grid transformation sof
Page 6 and 7: Appendix A Transforming ETRS89 GPS
Page 8 and 9: Orthometric heights in these system
Page 10 and 11: ETRS89 explainedBenefitsOrdnance Su
Page 12 and 13: Chapter 2Data overviewBasic princip
Page 14 and 15: Where:1 the record number is a sequ
Page 16 and 17: Where:1 the record number is a sequ
Page 18 and 19: 4 the height of the Geoid above the
Page 20 and 21: For example, to find the record for
Page 22 and 23: Shifts for x, y are:se 0= east_shif
Page 24 and 25: The OSi/OSNI polynomial transformat
Page 26 and 27: The Ordnance Survey Geoid model: OS
Page 28 and 29: Chapter 4Quality statementCoverageO
Page 30 and 31: Appendix ATransforming ETRS89 GPS c
Page 32 and 33: The offset values are given by:dx =
Page 34 and 35: Appendix BConverting latitude and l
Page 36 and 37: ⎛ ⎛ 5 2 5 3 ⎞ ⎛2 21 3 ⎞
Page 38 and 39: Appendix CConverting easting and no
Page 40 and 41: Worked example using Airy 1830 elli
Page 42 and 43: Geoid modelA model of the level sur

Transformations and OSGM02 user guide - Leica Geosystems

Create successful ePaper yourself

Delete template?

Save as template?