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Referenssystem och GNSS i praktiken - Swepos - Lantmäteriet

Referenssystem och GNSS i praktiken - Swepos - Lantmäteriet

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SWEREF 99 ⇔ kommunala system<br />

– RIX 95-samband<br />

SWEREF 99 dd mm<br />

N,E i aktuell<br />

projektionszon<br />

TM TM<br />

SWEREF 99<br />

lat, long<br />

SWEREF 99 TM<br />

N,E i nationell<br />

projektion (15°)<br />

TM (ev. TM + 2DH eller 3DH + TM)<br />

Kommunalt/lokalt<br />

system<br />

x,y<br />

TM (ev. TM + 2DH eller 3DH + TM)<br />

RT 90<br />

x,y i aktuell<br />

projektionszon<br />

RT 90<br />

lat, long<br />

TM TM<br />

RT 90<br />

x,y i nationell projektion<br />

(2,5 gon V)<br />

TM = Transversal Mercatorprojektion<br />

2DH = 2-dimensionell Helmerttransformation<br />

3DH = 3-dimensionell Helmerttransformation<br />

2009-10-14 6

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