M ET E K
M ic r o R a i n R a d a r M R R - 2
33
10.2010 Valid for MRR Service Version ≥ 5.2.0.9
Example (Each entry of the header line is shown in a separate line of the ta-
ble
)
:
MRR*090612040200
UTC
The header line dates from June 12
th
, 2009, 4:02 AM, UTC.
AVE****60
Averaging time is 60 seconds.
STP****35
Height resolution is 35 meters.
ASL***147
The radar is sited 147 meters above sea level.
SMP*125e3
Sampling rate is 125,000 Hz.
NF0*1.000
Noise level 0 set to 1.000 (used only in older versions).
NF1*0.000
Noise level 1 set to 0.000 (used only in older versions).
SVS*5.2.0.9
Version number of the MRR Service is 5.2.0.9
DVS*5.13
Version number of the MRR firmware is 5.13.
DSN*020704
Serial number of the MRR is 020704.
CC*2066000
Calibration constant is 2066000.
MDQ 100
Percentage of valid spectra is 100
H
- Height
Argument of the following data profiles corresponding to the settings described
in chapter 6.2.3
page 22, and chapter 6.2.4, page 25. The units are meters
above the radar system.
TF - Transfer Function
To each height step a value of the Transfer Function is assigned by which raw
data are divided.
Fnn
with nn from 0 to 63 - FFT Spectra
Each line represents a profile of spectral reflectivity corresponding to the spec-
tral bin
nn
. As
Fnn
is corrected for the receiver noise floor negative values can
occur, if the signal to noise ratio is low. These entries cannot be presented in
the logarithmic domain and are replaced by space characters.
Dnn
with nn from min(h) to max(h) - Drop Sizes
The drop size is described by the diameter of an equivolumic sphere. The
spectral bins of drop numbers are of variable width in the size domain (in con-
trast with spectral bins in the frequency- and velocity-domain). In addition, the
widths of the size bins are slightly height dependent. Therefore the assignment
