LAST CHANGED    : 2020/10/27 08:04:18
CRUISE NAME(S)  : FK200930
CRUISE DATES    : 2020/09/29  22:42:42 to 2020/10/27  08:03:56
SHIP NAME       : Falkor
PORTS           : Brisbane, AUS to Brisbane, AUS
CHIEF SCIENTIST : Robin Beaman
DATABASE NAME   : a_fk
DATA FILES      : fk2020_272_81746.raw to fk2020_300_28800.raw

STATUS          :  to do                           done
                  ------                       -----------
                  averaged                       [  X  ]
                  loaded                         [  X  ] # loaded at sea

                  NOTE: heading correction instrument exists
                        NOTE: time-dependent heading corrections
                        applied IN the ensembles
                        (see   cal/rotate/ens_hcorr.ang)

                  check heading correction       [  X  ]
                  calibration                    [  X  ]
                  edited                         [  X  ]
                  re-check heading correction    [  X  ]
                  check editing                  [  X  ]
                  figures                        [  X  ]

INSTRUMENT      : os75

ACQUISITION     : 
     PROGRAM    : uhdas
     PROCESSING:    : python

LOGGING         : 

     PARAMETERS : BT : bottom track mode (on or off)
                  SI : sampling interval or averaging period for ensemble (sec)
                  NB : number of bins
                  BL : bin length (m)
                  TD : transducer depth (m)
                  BK : blanking length (m)
                  HO : heading offset applied by DAS (deg)
                  HB : heading bias (deg)
                  CRPH : compensation for roll-pitch-heading, 1:on, 0:off)
                  
                  yy/mm/dd  hh:mm:ss   BT   SI  NB  BL  TD BK     HO     HB CRPH
                  2020/10/01 01:58:12  off  300  80   8   7  8  44.47   0.00 0001
                  2020/10/04 22:11:52   on  300  80   8   7  8  44.47   0.00 0001
                  2020/10/05 22:42:11  off  300  80   8   7  8  44.47   0.00 0001

HEADING         : 
     PRIMARY    : heading from gyro
     CORRECTION : heading correction from seapath
                        NOTE: time-dependent heading corrections
                        applied IN the ensembles
                        (see   cal/rotate/ens_hcorr.ang)

POSITIONS       : gps positions from cnav

CALIBRATION     : os75 original rotation: 44.47
                  additional rotation 0
                  final transducer angle is: 44.47
                       (44.47) - (none)
                  applied scale factor 1.0
                  additional scale factor (none)
                  final scale factor: 1.0

COMMENTS        : Falkor ROV cruise off of Australia - lots of small groups
                  of ADCP data.

                  Falkor cruises have a small number of
                  edited watertrack points due to procedures.
                  In this case we use a nearby cruise with
                  sufficient points as a measure of whether
                  the calibration is good or not. In this case
                  FK200308 is used, with the statistics:                  

                     **watertrack**   
                  ------------
                  Number of edited points:  19 out of  27
                     amp   = 0.9984  + 0.0002 (t -  84.2)
                     phase =  -0.06  + 0.0114 (t -  84.2)
                              median     mean      std
                  amplitude   0.9980   0.9984   0.0108
                  phase      -0.0100  -0.0646   0.3323
                  ------------

                  As the median amplitude and phase for this
                  cruise do not need correction, we will not
                  apply a correction to the current cruise.

PROCESSOR       : Joseph Gum


--- processing parameters ----------


## (determined from "sonar"): model = os
## (determined from "sonar"): frequency = 75
## (determined from "sonar"): instname = os75
## (determined from "sonar"): pingtype = bb
           beamangle   30
          cruisename   FK200930
            datatype   uhdas
             ens_len   300
             fixfile   a_fk.gps
           frequency   75
          hcorr_inst   seapath
            instname   os75
               model   os
            pingtype   bb
         proc_engine   python
          ref_method   refsm
     refuv_smoothwin   3
        refuv_source   nav
               sonar   os75bb
            txy_file   a_fk.agt
           xducer_dx   1
           xducer_dy   21
            yearbase   2020

=========================================
PROCESSING STEPS:
=========================================
# Processing starts in the os75bb directory.

# 1. Check heading correction

$ plot_nav.py nav/a_fk.gps

$ figview.py

We have no missing heading fixes, and the database starts after the hole
in the wh300. 

# 2. ADCP calibration

$ catwt

No water track points found.

$ catbt

   **bottomtrack**  
------------
unedited: 94 points
edited:   1 points, 2.0 min speed, 2.5 max dev
            median     mean      std
amplitude   0.9897   0.9897      nan
phase       0.0088   0.0088      nan

------------

$ catxy

   **transducer-gps offset**  
------------
guessing ADCP (dx=starboard, dy=fwd) meters from GPS
positions from a_fk.agt
calculation done at 2020/10/27 08:04:17
xducer_dx = -24.899423
xducer_dy = 44.151356
signal = 165.397259
------------

Signal is very low, not good for calibration - we're using a flanking cruise
for calibration anyway.

# 3. Editing points

$ dataviewer.py -e

Applied neighbor algorithm requiring at least *1* full neighbor to count.

$ quick_adcp.py --steps2rerun navsteps:calib --auto

$ catbt

   **bottomtrack**  
------------
unedited: 94 points
edited:   2 points, 2.0 min speed, 2.5 max dev
            median     mean      std
amplitude   0.9926   0.9926   0.0061
phase      -0.0093  -0.0093   0.0108

------------

Not concerning as we're using flanking cruise calibration data.

# 4. Re-check heading correction

$ figview.py

Seems fine.

# 5. Check calibration

Since we're using a calibration from a flanking cruise, there's not
much to be done here. We compare against original data just in case.

$ dataviewer.py -c . ../os75bb.orig

$ dataviewer.py -c . ../wh300

No real changes.

# 6. Make plots and files

$ mkdir webpy

$ cp ../wh300/webpy/sectinfo.txt webpy/.

$ quick_web.py --redo

$ figview.py webpy

$ adcp_nc.py adcpdb contour/os75bb FK200930 os75bb --ship_name Falkor

$ ncdump -h contour/os75bb.nc