Y = RCos(w)Sin( j) = RSin148.0005150 = 0.529911641578R
D
Z = RSin(w) = RSin00 = 0
D
计算东京到 点的距离（弦）
：
BD
D
2
2
2
BD = (XD' − XB ) +(YD' −YB ) +(ZD' −ZB )
=
3981897.96566m
弦
所对应的圆心角为BOD
BD
2
2
2
OB +OD −BD
) = 36.420131160
BOD = arcCos(
2OBOD
在BWO中，
WB
WO
=
SinBOD SinWBO
0
180 −BOD
0
WBO =
+WBD = +WBD
2
在WBD中，
WB
WD
=
SinBD W SinWBD
0
180 −BOD
0
BD W =180 −
=108.210065580
2
WO = 42164000m
WD = 42164000−6371000 = 35793000m。
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