Назад
P
n'
°
°
Q
°
g
P
n
Q
geoid
WW=
0
reference
ellipsoid
UW=
0
N
||z
G
r
e
e
n
w
i
c
h
m
e
r
i
d
i
a
n
L
¸
F
P
'
´
»
ellipsoidal normal
plumb line
L ¸
c
o
s
'
L ¸
n
n'