Geography Reference
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Box 21.30 (The polynomial coecients, the North components, namely y MN , the datum
transformation of conformal coordinates).
y 00 = y 00 + y 00 ,e 2 δE 2 + y 00 ,e 2 e 2
( δE 2 ) 2
2
a 1 (1 − e 2 )
+ δB
e 2 sin 2 b 0 ) 3 / 2
(1
3sin 2 b 0 + e 2 sin 2 b 0 )
2(1
δBδE 2 a 1 (2
+ δL 2 a 1 cos b 0 sin b 0
2(1
e 2 sin 2 b 0 ) 5 / 2
e 2 sin 2 b 0 ) 1 / 2
A 1
+ δB 2 3 a 1 e 2 (1
e 2 )cos b 0 sin b 0
a 1 ,
e 2 sin 2 b 0 ) 5 / 2
2(1
A 1 ,y 01 = 1+ δE 2 2
3sin 2 b 0 + e 2 sin 2 b 0
2(1 − e 2 )(1 − e 2 sin 2 b 0 )
δL sin b 0 ] a 1
y 10 =[
a 1
A 1 ,
δB 3 e 2 cos b 0 sin b 0
(1 − e 2 sin 2 b 0 )
δB 1 2sin 2 b 0 3 e 2 sin 2 b 0 +4 e 2 sin 4 b 0
2 a 1 cos 2 b 0 (1
y 20 =
e 2 sin 2 b 0 ) 1 / 2
e 2 sin 2 b 0 ) 1 / 2 a 1
2
cos b 0 sin b 0
+ δE 2
,
A 1
2 a 1 (1
e 2 )(1
δL cos b 0 (1
a 1
A 1
2
e 2 sin 2 b 0 ) 3 / 2
a 1 (1 − e 2 )
y 11 =
,
δB 3 e 2 (1 2sin 2 b 0 + e 2 sin 2 b 0 )
2 a 1 (1
y 02 =
e 2 sin 2 b 0 ) 1 / 2
e 2 )(1
e 2 sin 2 b 0 ) 1 / 2 a 1
2
3cos b 0 sin b 0
+ δE 2
,
(21.89)
2 a 1 (1
e 2 )(1
A 1
δL sin b 0 (1 − e 2 sin 2 b 0 ) 2 (1 + 3 e 2
a 1
A 1
3
4 e 2 sin 2 b 0 )
y 30 =
,
6 a 1 (1 − e 2 ) 1
y 21 = δB tan b 0 [2 + 5 e 2
3 e 2 sin 2 b 0 (5 + e 2 )+3 e 2 sin 4 b 0 (2 + 3 e 2 )
4 e 4 sin 6 b 0 ]
2 a 1 (1
e 2 )cos 2 b 0
a 1
A 1
3
2sin 2 b 0 + e 2 sin 4 b 0
2 a 1 (1
−δE 2 1
,
e 2 ) 2
y 12 =+ δL sin b 0 (1
a 1
A 1
3
e 2 sin 2 b 0 ) 2 (1 + 3 e 2
4 e 2 sin 2 b 0 )
,
2 a 1 (1
e 2 ) 1
y 03 = δB e 2 cos b 0 sin b 0 [4 3 e 2
2 e 2 sin 2 b 0 + e 4 sin 2 b 0 ]
2 a 1 (1 − e 2 ) 2
a 1
A 1
3
2sin 2 b 0 + e 2 sin 4 b 0
2 a 1 (1
δE 2 1
.
e 2 ) 2
 
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