----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
REFRAC 1
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
1-6 A6 REFRAC - Specifies the tropospheric
model to be used for tropospheric
corrections to the observations.
8 I1 Model selection number 0
= 0 Hopfield Model
= 1 Marini Murray Model [NOTE 1]
= 2 VLBI/GPS
= 3 GPS Model using Neil mapping functions
= 4 Marini Murray for laser data
Model 03 for nonlaser data
9 I1 Correction Component Applied 0
= 0 Wet and Dry
= 1 Wet Only
= 2 Dry Only
10 I1 Scale Factor Adjustment 0
= 0 K*(Wet + Dry)
= 1 K*Wet Only
11 I1 Wet Component Mapping Function (Model 2) 0
= 0 Chao
= 1 CFA2.2
12 I1 Dry Component Mapping Function (Model 2) 0
= 0 Chao
= 1 CFA2.2
APR 1997
9704.0
GLOBAL SET
REFRAC (cont)
NOTES:
[1] The Marini Murray model is only available for laser range data. If
the Marini Murray model is selected (column 8 =1) and data other
than laser range is present, the Hopfield model will be used
for all non laser range data and the Marini Murray model will be used for
the laser range data.
IF CARD OMITTED: Hopfield model will be used for non laser range data.
Marini Murray model will be used for laser range data.
JUNE 1991
9106.0
GLOBAL SET