M ET E K
M ic r o R a i n R a d a r M R R - 2
32
10.2010 Valid for MRR Service Version ≥ 5.2.0.9
in increments according to the chosen height resolution of the MRR. Invalid or
not calculable values are coded as 7 consecutive space characters. Space
characters at the end of a line are omitted in order to save disk space. So lines
can have different lengths although representing the same number of height
steps.
MRR
– Header Line
The header line marks the beginning of a data set. It starts with the identifying
string ”
MRR
“, a space character and a date/time stamp.
The date/time stamp consists of 12 digits (format
YYMMDDhhmmss
), a single
space character and the name of the time zone. This name starts with the
string „
UTC
“ and is optionally followed by an offset value (format
±hh
or
±hhss
).
Averaging t
ime in seconds (“
AVE
”), (Not in instantaneous data).
height resolution in meters (“
STP
”),
height of the ground level above sea level in meters (“ASL”),
sampling rate (“
SMP
”) of the RADAR signal in the time domain (unit: Hz),
parameters for the automati
c noise level adjustment (“
NF0
” and “
NF1
” without
unit),
version number of the MRR Service (“
SVS
”),
version number of the MRR firmware (“
DVS
”),
serial number of the MRR (“
DSN
”)
calibration con
stant (“
CC
”)
data quality parameter consisting of the identi
fying string “MDQ”, a single
space character and a 3digit number between 0 and 100. It is the percentage
of valid spectra collected during the averaging interval. Spectra can be invalid
due to saturation of the AD converter
– caused either by extreme precipitation
or by some interference
Each of the parameters in the header line starts with a delimiting space char-
acter, the 3-character identifier as shown above in the parentheses and a field
of 6 characters for the numerical value (except of the serial number, which can
consist of up to 10 numeric characters between 0 and 9).
