A. General Description
1. Force Model
a. 50x50 gravity field
b. Drag applied using the Jacchia 71 atmospheric density
model
2. Printout control
a. Selected option on print and terminal output
b. Trajectory file output
Printout is from ORBTVU
File output (Unit 30 is recommended) is from ORBFIL
3. General notes
a. This is a simulated data generation capability
b. Measurement type PCE (position only)
c. Scheduling information must be provided by the user on
unit 17 (see below)
d. The data subgroup must be omitted in the simulated data
generation mode
e. Do not use a VECOPT card with this option
f. Simulated data capabilities and normal point generation
cannot be part of the same job
B. Unit 05 Setup IIS
***************************************
SIMULATED DATA GENERATION - GLOBAL SECTION
***************************************
I64G2E
PRNTVU 21
TERMVU 1212212222
EARTH 50 50 3.986004360D+14 6378137.00 298.257
EPHEM 200
ENDGLB
***************************************
SIMULATED DATA GENERATION - ARC SECTION
***************************************
REFSYS 111 820120
SATPAR 8903901 33.8200000000 2113.9000000
EPOCH 820120 000 0.00000008201200400 0.00000008201300400 0.0000000
ELEMS120 7713600.000 .00044 65.105
ELEMS2 356.35 270.00 .000000001
SIMDAT 1 1
ORBTVU 820120040000.00 820130040000.00 300.0
ORBFIL 30 8903901820120040000.00 820130040000.00 300.0
STEP 8903901 30.000
ENDARC
/*
C. Unit 17 Description
1. A blank SIMDAT and a SIMLIM card are mandatory
2. Each individual configuration (unique measurement type
satellites and/or station) must be represented by a group
that begins with SIMSAT and ends with ENDCON. (See Vol 3
SIMDAT)
3. The simulated observations will be output on unit 20 after
the first inner iteration. This data can be fed back into
IIS in a data reduction mode. Do not input to TDF!
D. Unit 17 Setup IIS
SIMDAT
SIMLIM 300.0
SIMSAT 8903901
SIMTIM 820120040000. 820130040000.
SIMTYP 1 1.0 300.
ENDCON
SIMSAT 8903901
SIMTIM 820120040000. 820130040000.
SIMTYP 2 1.0 300.
ENDCON
SIMSAT 8903901
SIMTIM 820120040000. 820130040000.
SIMTYP 3 1.0 300.
ENDCON
ENDSIM