Metek MRR-2, Руководство пользователя

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M ET E K M ic r o R a i n R a d a r M R R - 2
31
10.2010 Valid for MRR Service Version ≥ 5.2.0.9
6.3 Instantaneous and averaged data
6.3.1 Format description
Instantaneous and averaged data are archived in two separate directory struc-
tures (see chapter 7.1.2 Data Recording on page 42). Optional recording of so
called raw data, which represent the unprocessed measuring data of the
MRR-2, is only useful for special purposes.
The data format is human readable ASCII text. Each data set consists of one
line. The order of the data lines and the used identifiers are listed below:
Identifier Meaning Unit Remark
MRR Header Line n.A.
H Height m
TF Transfer Function dimensionless
F nn Spectral Reflectivities dB
10∙log η
nn
with
η
nn
in m
-1
nn from min( h ) to max( h )
3
D nn Drop Size mm Center of size class
N nn Spectral Drop Densities m
-3
mm
-1
N ( D
nn
)
3
PIA Path Integrated Attenua-
tion
dB
Z Radar Reflectivity dBZ
 



) max(
) min(
) ( log
h nn
h nn
nn nn
D D N
6
10
nn from min( h ) to max( h )
z Attenuated Radar Reflec-
tivity
dBZ Z-PIA
RR Rain Rate mm h
-1
LWC Liquid Water Contents g m
-3
W Fall Velocity m s
-1
1)
See MRR-Physical Basics for details .
The measured data are displayed in lines following the header. For each
measured variable there is one line starting with a 3-character identifier of the
variable. Each line represents a profile of this variable, i.e. a function versus
height. Each data entry is 7 characters wide. Height is running from left to right
3
See MRR-Physical Basics for details .