----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
SIGMA 7010 517603901 .10 .25
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
COLUMNS FORMAT DESCRIPTION DEFAULT VALUE & UNITS
1-6 A6 SIGMA - Permits specification of
observation weighting and editing sigmas.
7-14 I8 Station number. 0
15 I1 Station/satellite configuration #. 0
16-17 I2 Measurement Type. 2 digits or less. 0
See list of measurement types after
ENDARC description.
18-24 I7 Satellite ID. 0
25-30 I6 Measurement Type. 3 digits or less. 0
See list of measurement types after
ENDARC description.
31-40 D10.8 Observation standard deviation. Obtained from data
Used in forming normal equations.
51-60 D10.8 Observation editing sigma. Used for Value in cols. 31-40
data editing only. If this field is
left blank the standard deviation
specified in columns 31-40 will be
used for data editing.
Units for sigmas are : Range - M, Range Rate - CM/S, Angles - AS
UNITS: KM =Kilometers; M =Meters ; S =Seconds ; Kg =Kilograms
DEG=Degrees ; RAD=Radians ; AS =Arc seconds; MAS=Milli-arc seconds
CM =Centimeters
DEC 1992
9212.0
ARC SET - Option Cards
DATA SUBGROUP
SIGMA (cont)
NOTE : If SIGMA is intended to apply to all data, a SIGMA card should
preceed all SELECT cards, otherwise SIGMA applies only to its
preceding SELECT card in the setup. An example is provided here:
SIGMA 40 2.0 2.0
SELECT 90041300000. 900414000000
SIGMA 40 0.0 0.0
SELECT 90041400000. 900415000000
SIGMA 40 1.0 1.0
SELECT 90041600000. 900417000000
SIGMA 40 0.0 0.0
In the example above sigma= 0.0 will be applied to all
measurements between 900413 and 900414 and between 900416 and
900417, sigma= 1.0 will be applied to all observations between
900414 and 900415, sigma= 2.0 will be applied to all observations
between 900415 and 900416. The epoch times in this example are
900413 and 900417.
IF CARD OMITTED: Sigma on data records will be used.