DISTANCE COMPUTING FORM, ANDOYER-LAMBERT APPROXIMATION 



(No conversion to parametric latitudes) 



Clarke Spheroid 1866 a = 6,378,206.4 meters 



f/2 = 0.00169503765, f/4 = 0.000847518825 



1 radian = 206,264.8062 seconds 



o I It jr Old 



<^, S'S' V£r /9'S'(ti )\. J^sa€?£0 \, ~3 7 sV ys:vs-o (£^ 



sin (6. y: i^-3 ^ C^^ f^ 2. West of 1. AA:^A,-A,= ^^^ 0-ir3^ ^a^'0 



cos ^, t,^^^ 9^1^-?^ sin 0, ~'S-^S' JiV/9f 3i„ AA ^.3:^9 <:>99^/ 

 tan ^ y'V^f9fS-^X ... ^ y.S^9 ^93^/9 ,,3 aa t^ 9^"/ 9f'^<^'/ 



tan 02 *^ ^ ^ 1 cos d = sin 0jSin 02+ cos 0i cos 02 cos AA Z^ 1 



M = cos0,tan0,-sin0, cosAA -^^ ^^'^ 7 ^^TJ^^T" ,„, A . M ^3. ^^^^ ^7 ^ ^ ^ 9 



sin AA 



N = cos 02 tan 0j-sin02 cos AA— !_i-^ ^ c ot B 



nAA 



sin d - '°^ '^^^^"^^ - 99979VS f^^^ A '^.JL<P/'/V^^ -7 ^ /C9^ /^ ^9^:^^ ^ 



sin B 



_ cos 02 sin AA ._^ggg^^^^.^ p ^. y/^y y^?^/9 g /^ -J*^ '^-•^" -^'^- ^ 



sin A ^ ^/ «:? 9 ^o.s'^'i r' 



K = (sin 01- sin 0J^ y-/. ^/7 9^^^ "7 ' H = (d + 3 sin d)/(l - rn/d^ y- V> '^ 9 9 ^ -S^ / 3S 

 L = (sin 0, +sin<^,)^ ->^^y^^>?»<^^/ ' G = (d - 3 sin d)/(l + cos ^^ — /^ V^^y-^'^^ J" 



5d =-(f/4) (HK + GL) -,c^a7^'^S■^/<0 s = a (d + 3d) /^^ ^'^"^/'^^'^ ^^-^ eters 



d (radians) -^A^9/0^^^^f s -Ty^-^^ ^^^-/^ „.„. 



d + Sd Ud) ^/ ^-^3^3 99^^" T = d/sin d /.i'9/39^^^ 



2A v?^r ^y <r9'^'^f 2B ^ / y^ ^-/^ 4^<^^ 



sin .A -'^^'^ ^r^^^'O 2B ^^■^<^/ 9/63f ^ 



U = (f/2) cos^0. sin 2A — ^-^^^^V^>^^^" % = (f/2) cos ^0^ sin 28 ^ V> >2^-^/^ -^^ >^^^ ' ' 



vt t^^^ ' 7JOJZ3 /~r^/^- ^ UT — 4- ^i>3 /3^'/ X y^-^ 



3A = vT-ii ~r9.^'-:i'/ ^r / /^^-^ m = -vT.x' y^r^^r^ 999yy^- ^ 



-A 



^1-2 



+ 180 o . „ + 180 o 



/4- Vj^ y6/939 n. , yy<^ ^^ J'/' VV>^ 



ai-2 = a^B = 180°- A + SA czj-, =ug^ = 



Line No. 12 (See Tables 1,2 - pages 65,66) 



124 



