Attitude determination example

The example demontsrates a way how to use the 
coefficients arrays and the Software.

Let us suppose that we have a direction in the S/C frame, determined
by the angles u1, u2, where:
u1 - angle between vector and X axis (polar angle)
u2 - angle on the YZ plane from Y axis (anticlockwise);
Let   u1=30.deg, u2=90.deg.
We want to know the direction in the GSE frame for date 10.09.1995,
1h.0min.0sec. ut.
We use the file 950909t1 (the beginning data 9.09.06), which line 2
interval beginning: date 10.10.95, time 1.926 thousands of sec, the
interval duration is 4.583 thousand of sec.
Our time of interest (3.6 thousands of sec) is within the interval.

We use the subroutine attid1.
Our input parameters :

 ts=1.674 (which is 3.6 (the time of interest) minus 1.926 )

 u1=30.
 u2=90.

 x1=  -.280     x6=   .891      x11=  53.2813
 x2=   .609     x7= -1.210      x12=  36.6949
 x3=  1.209     x8=   .594      z1=    2.0277
 x4=   .018     x9=  -.446      z2=  -53.2813
 x5=  -.159     x10= -.054

The result is the unit vector in the GSE frame:

 x=   .869280
 y=  -.351664
 z=   .347397