a-b 



^- 



[Ncos0,N(l-e^rsin0]Q 

 r =a cos ■■ 



P (a cos^, a sin 



h(p--{cp-9)^ 



\ 



3^. 



^ 



.<^. 



__1 T/^ J i _ 



S.V- 



v\ \ 



Om 



Ne^ cos „ 



-I ^- - 



■Q- 



Figure 1. Latitude relationships in the auxiliary sphere-spheroid configuration. 



13 



