Byte av referenssystem i plan i Oskarshamns kommun - LantmÃ¤teriet

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AbstractA number of different local co-ordinate systems had been used in Oskarshamn municipalityduring the 20 th century. However, before the year of 2000 it had been possible to connect anumber of smaller systems to two bigger ones, which was good but not enough. The twobigger co-ordinate systems were dialects of national systems but only weakly connected tothem. Furthermore, because of the way that the systems had been developed, the two local coordinatesystems were distorted and the distortions needed to be reduced. As the geometry ofthe co-ordinate system was renovated, the advantages of a changeover to SWEREF 99 – areference system that is adapted to global satellite navigation technology – were natural andcould easily be seen. A decision on the changeover was made and the project could begin.Since the work on the changeover of reference system in a municipality is done after consultationwith Lantmäteriet, the Swedish mapping, cadastral and land registration authority,methods prepared and recommended by Lantmäteriet were used. The thesis describes andgives a real-life example of how the methods work quite concretely. In a theoretical part theRix 95 project carried out by Lantmäteriet is described together with the possibility to projecta local system directly to a global one by means of the direct projection method, the conceptof residual and different means of presenting residuals in vector maps and variation images.With the result of the Rix 95 project as a starting point, an analysis of the residuals startedaccording to an iterative procedure: analysis – result – surveys – new analysis – new result –new surveys – final analysis – final result. The surveying technique used was network RTKsurvey. Aids used for the analysis were residual vector maps and variations of distortionsimages, together with historic knowledge about and experience of the two local geodetic controlnetworks.Some tests and checks were done of the final transformation parameters before the municipallarge scale map was transformed. These tests included among other things surveys of a numberof control points.It could be established that the transformation parameters together with the correction modelhad transferred the map details in a reliable way so that the municipal large scale map hadobtained a good quality completely comparable with those in other municipalities.IV
InnehållsförteckningFÖRORD.................................................................................................................................................................ISAMMANFATTNING....................................................................................................................................... IIIABSTRACT .........................................................................................................................................................IVINNEHÅLLSFÖRTECKNING .......................................................................................................................... V1. GEODETISKT UTGÅNGSLÄGE OCH FÖRBEREDANDE ÅTGÄRDER......................................... 11.1 BAKGRUND ........................................................................................................................................... 11.2 PROBLEM MED TVÅ KOORDINATSYSTEM............................................................................................... 31.3 VARFÖR GÅ ÖVER TILL SWEREF 99?................................................................................................... 31.4 VARFÖR BYTA REFERENSSYSTEM I PLAN MEN INTE I HÖJD? .................................................................. 31.5 MANDAT ATT GENOMFÖRA ÖVERGÅNGEN ............................................................................................ 42. TEORI .......................................................................................................................................................... 52.1 RIX 95................................................................................................................................................... 52.2 DIREKTPROJEKTION .............................................................................................................................. 62.2.1 Bakgrund ......................................................................................................................................... 62.2.2 Direktprojektionsmetoden................................................................................................................ 62.3 RESTFEL.............................................................................................................................................. 112.3.1 Restfelsmodell................................................................................................................................ 122.3.2 Redovisning och presentation av restfel ........................................................................................ 123. RESTFELSANALYS OCH TRANSFORMATION ............................................................................... 153.1 RESULTATET AV RIX 95-MÄTNINGARNA I SMÅLAND OCH OSKARSHAMN........................................... 153.2 PLANERING AV KOMPLETTERINGSMÄTNINGAR ................................................................................... 173.3 VAL AV MÄTMETOD OCH MÄTTEKNIK................................................................................................. 183.3.1 Statisk mätning .............................................................................................................................. 183.3.2 RTK-mätning ................................................................................................................................. 193.3.3 Förutsättningarna i Oskarshamn .................................................................................................. 213.4 PERSONAL, UTRUSTNING OCH UPPLÄGG.............................................................................................. 213.5 MÄTNINGARNAS FÖRSTA ETAPP.......................................................................................................... 223.6 FORTSATT ANALYS.............................................................................................................................. 233.6.1 Regionsystemet .............................................................................................................................. 253.6.2 Oskarshamns lokala koordinatsystem ........................................................................................... 293.7 PLANERING AV ANDRA MÄTETAPPENS MÄTNINGAR ............................................................................ 313.8 MÄTNINGARNAS ANDRA ETAPP........................................................................................................... 323.9 ANALYSENS SLUTFAS.......................................................................................................................... 323.9.1 Regionsystemet .............................................................................................................................. 353.9.2 Oskarshamns lokala koordinatsystem ........................................................................................... 383.10 UPPRÄTTANDE AV RESTFELSMODELLER.............................................................................................. 393.11 FRAMTAGANDE AV TRANSFORMATIONSSAMBAND.............................................................................. 443.12 TEST OCH KONTROLL AV TRANSFORMATIONSSAMBAND ..................................................................... 443.13 TRANSFORMATION AV OSKARSHAMNS KOMMUNS PRIMÄRKARTA...................................................... 494. DISKUSSION OCH SLUTSATSER........................................................................................................ 504.1 VALET AV MÄTTEKNIK........................................................................................................................ 504.2 ANALYSARBETE OCH HISTORISK STOMNÄTSKUNSKAP ........................................................................ 504.3 HJÄLPMEDEL I ANALYSPROCESSEN ..................................................................................................... 514.4 TRANSFORMATIONENS KVALITET ....................................................................................................... 52LITTERATURFÖRTECKNING....................................................................................................................... 54V
Page 1: Byte av referenssystem iplan i Oska
Page 5: SammanfattningFlera olika lokala ko
Page 10 and 11: och betecknades RT 38 66 2,5 gon V.
Page 12 and 13: framtiden, för att på så sätt s
Page 14 and 15: 2.2 Direktprojektion2.2.1 BakgrundT
Page 16 and 17: e 2= f (2 − f )fn =(2 − f)a ⎛
Page 18 and 19: 4f ( ξ ′,η′) = ξ ′ + ∑
Page 20 and 21: serna mellan passpunkternas två ol
Page 22 and 23: ddFigur 5. En vektorsubtraktion res
Page 24 and 25: Figur 7. Restfelsvektorer för Rix
Page 26 and 27: terna som utgjort utgångspunkter f
Page 28 and 29: minuter. Om den fixlösning som erh
Page 30 and 31: inmätningar. På det sättet behö
Page 32 and 33: det hade gjorts mätningar i under
Page 34 and 35: utjämnats under en och samma mäti
Page 36 and 37: För Kristdala, det andra området
Page 38 and 39: Analysen tog sin utgångspunkt frå
Page 40 and 41: förhållanden, tillförlitliga mä
Page 42 and 43: Figur 17. Restfelsvektorer efter m
Page 44 and 45: Figur 19. Restfelsvariationer efter
Page 46 and 47: En sammanfattning av resultaten fr
Page 48 and 49: Nästa steg i arbetet med att ta fr
Page 50 and 51: Figur 25. Samtliga restfelsvektorer
Page 52 and 53: I figurerna 25 och 26 presenteras e
Page 54 and 55: Figur 28. Restfelsmodell för regio
Page 56 and 57:
Figur 31. Restfelsmodell för Oskar
Page 58 and 59:
4. Diskussion och slutsatserDet hä
Page 60 and 61:
direkt förstås genom en titt på
Page 62 and 63:
LitteraturförteckningBöcker, rapp
Page 64 and 65:
Reports in Geographic Information T
Page 66 and 67:
200808-001 Wan Wen. Road Roughness
Page 68:
TRITA-GIT EX 09-06ISSN 1653-5227ISR
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Byte av referenssystem i plan i Oskarshamns kommun - LantmÃ¤teriet

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