----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
ATITUD
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
1-6 A6 Requests application and/or
adjustment of attitude angles
(roll, pitch, yaw).
7 I1 Index defining the attitude
angle
1 - Roll
2 - Pitch
3 - Yaw
8 I1 Index defining the term of the
polynomial.
0 - constant term
1 - Coefficient of linear term
2 - Coefficient of quadratic term
3 - Coefficient of amplitude
4 - Coefficient of phase
10-11 I3 Indicates if this card will be
used to specify end time for
application.
99 - Card DOES specify application
end time.
00 - Card provides a-priori values
and sigmas for parameters.
12-14 I3 If cols 10-11 are 99 then this
3 digit integer represents the
sequence of rotations for this
period of time for the S/C
ex: 123 means first apply roll,
then pitch, last yaw. 312 means
first apply yaw, then roll, last
pitch.
If cols 10-11 are 00 this field
must be filled with the laser number.
For the S/C this number should
be 00 (See example).
JUL 1998
9808.0
ARC SET
ATITUD (cont)
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
15-17 I3 If cols 10-11 are 99 then this
3 digit number represents the
sequence of rotations for the
individual lasers and for this
period of time All the individual
lasers will have the same sequence
of rotation. Also in this case a
combination of the numbers 1,2,3
should be used.
18-24 I7 Satellite ID.
25-44 D20.8 If cols 10-11 are 00 this field
contains the a-priori value of
the coefficient.
If cols 10-11 are 99 this field
must be empty.
45-59 D15.3 If cols 10-11 are 99 this field
contains the end time of application
of the parameters that follow.
If cols 10-11 are 00 this field
must be empty. The period that
ends at the specified time, begins
at the previous end time or at
EPOCH time. The end time is in
the form: YYMMDDHHMMSS.SS.
60-72 If cols 10-11 are 00 this field
contains the standard deviation
of the coefficient. If this field
is zero, GEODYN will assign a
very small standard deviation to
-30
the parameter 1x10 .
If cols 10-11 are 00 this field
contains the period of the S/C
JUL 1998
bf 9808.0
ARC SET
ATITUD EXAMPLE
The example below requests adjustment of roll, pitch and yaw (complete five term polynomial: constant, linear, quadratic, amplitude and phase terms) with a sigma 1.D0 for each parameter. The S/C (id=9252010) has a laser instrument (id=001) and a solution is requested for both S/C and laser instrument at time periods: 1. EPOCH - 930219031600.00 2. 930219031600.00 - 930219111600.00 The sequence of rotations for the S/C is: ROLL-PITCH-YAW The sequence of rotations for the laser is: ROLL-PITCH-YAW ATITUDE 991231239205201 930219031600.00 ATITUD10 000 9205201 +.0100000000000D-02 .100000D+01 ATITUD11 000 9205201 +.0200000000000D-05 .100000D+01 ATITUD12 000 9205201 +.0300000000000D-11 .100000D+01 ATITUD13 000 9205201 +.0400000000000D-11 .100000D+01 ATITUD14 000 9205201 +.0500000000000D-11 .100000D+01 ATITUD20 000 9205201 +.0400000000000D-02 .100000D+01 ATITUD21 000 9205201 +.0500000000000D-05 .100000D+01 ATITUD22 000 9205201 +.0600000000000D-11 .100000D+01 ATITUD23 000 9205201 +.0700000000000D-11 .100000D+01 ATITUD24 000 9205201 +.0800000000000D-11 .100000D+01 ATITUD30 000 9205201 +.0700000000000D-02 .100000D+01 ATITUD31 000 9205201 +.0800000000000D-05 .100000D+01 ATITUD32 000 9205201 +.0900000000000D-11 .100000D+01 ATITUD33 000 9205201 +.1000000000000D-11 .100000D+01 ATITUD34 000 9205201 +.1100000000000D-11 .100000D+01 ATITUD10 001 9205201 +.1100000000000D-02 .100000D+01 ATITUD11 001 9205201 +.1200000000000D-05 .100000D+01 ATITUD12 001 9205201 +.1300000000000D-11 .100000D+01 ATITUD13 001 9205201 +.1400000000000D-11 .100000D+01 ATITUD14 001 9205201 +.1500000000000D-11 .100000D+01 ATITUD20 001 9205201 +.1400000000000D-02 .100000D+01 ATITUD21 001 9205201 +.1500000000000D-05 .100000D+01 ATITUD22 001 9205201 +.1600000000000D-11 .100000D+01 ATITUD23 001 9205201 +.1700000000000D-11 .100000D+01 ATITUD24 001 9205201 +.1800000000000D-11 .100000D+01 ATITUD30 001 9205201 +.1700000000000D-02 .100000D+01 ATITUD31 001 9205201 +.1800000000000D-05 .100000D+01 ATITUD32 001 9205201 +.1900000000000D-11 .100000D+01 ATITUD33 001 9205201 +.2000000000000D-11 .100000D+01 ATITUD34 001 9205201 +.2100000000000D-11 .100000D+01 ATITUD 991233219205201 930219111600.00 ATITUD10 000 9205201 +.0100000000000D-02 .100000D+01 ATITUD11 000 9205201 +.0200000000000D-05 .100000D+01 ATITUD12 000 9205201 +.0300000000000D-11 .100000D+01 ATITUD13 000 9205201 +.0400000000000D-11 .100000D+01 ATITUD14 000 9205201 +.0500000000000D-11 .100000D+01
JUL 1998
bf 9808.0
ARC SET
ATITUD EXAMPLE (cont)
ATITUD20 000 9205201 +.0100000000000D-02 .100000D+01 ATITUD21 000 9205201 +.0200000000000D-05 .100000D+01 ATITUD22 000 9205201 +.0300000000000D-11 .100000D+01 ATITUD23 000 9205201 +.0400000000000D-11 .100000D+01 ATITUD24 000 9205201 +.0500000000000D-11 .100000D+01 ATITUD30 000 9205201 +.0100000000000D-02 .100000D+01 ATITUD31 000 9205201 +.0200000000000D-05 .100000D+01 ATITUD32 000 9205201 +.0300000000000D-11 .100000D+01 ATITUD32 000 9205201 +.0400000000000D-11 .100000D+01 ATITUD42 000 9205201 +.0500000000000D-11 .100000D+01 ATITUD10 001 9205201 +.0100000000000D-02 .100000D+01 ATITUD11 001 9205201 +.0200000000000D-05 .100000D+01 ATITUD12 001 9205201 +.0300000000000D-11 .100000D+01 ATITUD13 001 9205201 +.0400000000000D-11 .100000D+01 ATITUD14 001 9205201 +.0500000000000D-11 .100000D+01 ATITUD20 001 9205201 +.0100000000000D-02 .100000D+01 ATITUD21 001 9205201 +.0200000000000D-05 .100000D+01 ATITUD22 001 9205201 +.0300000000000D-07 .100000D+01 ATITUD23 001 9205201 +.0400000000000D-07 .100000D+01 ATITUD24 001 9205201 +.0500000000000D-07 .100000D+01 ATITUD30 001 9205201 +.0100000000000D-11 .100000D+01 ATITUD31 001 9205201 +.0200000000000D-05 .100000D+01 ATITUD32 001 9205201 +.0300000000000D-07 .100000D+01 ATITUD33 001 9205201 +.0400000000000D-07 .100000D+01 ATITUD34 001 9205201 +.0500000000000D-07 .100000D+01 In the same example as above, if one wishes to solve only for Yaw constant and linear terms and for the same periods of time the input reduces to : ATITUDE 991231239205201 930219031600.00 ATITUD30 000 9205201 +.0700000000000D-02 .100000D+01 ATITUD31 000 9205201 +.0800000000000D-05 .100000D+01 ATITUD30 001 9205201 +.1700000000000D-02 .100000D+01 ATITUD31 001 9205201 +.1800000000000D-05 .100000D+01 ATITUD 991233219205201 930219111600.00 ATITUD30 000 9205201 +.0100000000000D-02 .100000D+01 ATITUD31 000 9205201 +.0200000000000D-05 .100000D+01 ATITUD30 001 9205201 +.0100000000000D-11 .100000D+01 ATITUD31 001 9205201 +.0200000000000D-05 .100000D+01 In the above case GEODYN will assign zero values and sigmas =1.D-30 to all the other parameters in the model. In general, if only one parameter in the model has been assigned a sigma, GEODYN will use a full model parameterization scheme with tight sigmas for all the other parameters. IF CARD OMITTED: Attitude modeling will not be invoked in GEODYN
AUG 1997
9708.0
ARC SET - Option Cards