("*" is out of time order)
#filename datestr startdd enddd gapsecs bin blank Nbins ping medens PingsPerProf numprofs
Collins_PtSur_Ridge005_000000.LTA 2009/09/22 14:35:58 264.6083 264.7125 0s 8m 8m 80 bb /bt 300.43s 82 31
Collins_PtSur_Ridge006_000000.LTA 2009/09/22 17:07:45 264.7137 264.9672 106s 8m 8m 80 bb /-- 300.59s 163 74
Collins_PtSur_Ridge007_000000.LTA 2009/09/22 23:13:33 264.9677 265.0372 47s 8m 8m 80 bb /bt 298.89s 86 21
=== GLOSSARY ===
datestr : date of data start (convert to startdd)
startdd : floating point decimal day of data start (Jan 1 noon UTC = 0.5)
enddd : floating point decimal day of data end (Jan 1 noon UTC = 0.5)
gapsecs : instrument setting: time gap in seconds between this and the previous file
bin : instrument setting: bin size in meters
blank : instrument setting: size of blank (meters)
Nbins : instrument setting: number of bins
ping : broadband, narrowband, bottomtrack
medens : estimated time duration of profiles in secondsPingsPerProf: number of pings in the profile (numpings=1 for ENR,ENS,ENX)
numprofs : number of averaged profiles in the file
====
NOTE ABOUT NUMBER OF PINGS PER AVERAGE ("PingsPerProf")
LTA and STA data are VmDAS "Long Term Average" and "Short Term Average", respectively.
Only the first ensemble average contains a value for "number of pings per ensemble".
If the instrument was set to ping only when receiving a synchronizing pulse,
(commonly called "triggering"), then the number of pings for each ensemble is unknown.
Because VmDAS can get "stalled", the first ensemble might not be a good representation.
You are advised to look at the *.ENR data to determine time between pings
... or, to have more control, and get a better dataset, reprocess from ENR.
----------------------
Files are in ascii order: also already in time order
all data from instrument "Ocean Surveyor Broadband/Narrowband ADCP"
all files come from os75
----------
instrument frequency is 75
beam angle is 30
transducer angle (EA) was set as 1.180
----------
ensemble length = 300 sec (+/- 10sec)
----------
Heading Source information comes from *.VMO files;
Duplicate entries with different values require further investigation:
HeadingSource(0:adcp,1:navHDT,2:navHDG,3:navPRDID,4:manual)=1
NMEAPortForHeadingSource=1
EnableBackupHeadingSource=TRUE
BackupHeadingSource(0:adcp,1:navHDT,2:navHDG,3:navPRDID,4:manual,5:PASHR,6:PASHR,ATT,7:PASHR,AT2)=8
NMEAPortForBackupHeadingSource=2
----------
EnableGGASource=TRUE
NmeaPortForGGASource=3
----------
N1R files include these messages:
[['$HEHDT']]
N2R files include these messages:
[['$GPGGA', '$GPHDT', '$PASHR,AT2', '$PASHR,ATT', '$PASHR,POS']]
N3R files include these messages:
[['$GPGGA', '$GPGLL']]
----------
