方位角中誤差的解法 - 土木
By Freda
at 2013-10-24T14:10
at 2013-10-24T14:10
Table of Contents
題目:已知A點座標(EA,NA)=[1500m(+-)0.01m,500m(+-)0.01m]
B點座標(EB,NB)=[1700m(+-)0.01m,300m(+-)0.01m]
試問AB兩點的方位角ψAB與其中誤差?
小弟的解法:
http://farm8.staticflickr.com/7455/10453063955_59f7933934_c.jpg
題解書的解法:
http://farm4.staticflickr.com/3747/10453064095_dc1c02da14_c.jpg
小弟的答案為:(+-)16.078"
題解的答案為:(+-)10.21"
------------------------------------------------------------------------------
假設偏微分符號為:m
小弟的疑問:題解書中的 mψAB/mZ = 1/(1+Z^2) = 1/(1+1) = 1/2 怎麼出來的?
後學實在是看不懂,麻煩版上前輩們不吝嗇指導,謝謝!
--
水無常態,兵無常勢。
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