LAST CHANGED    : 2019/10/11 23:23:39
CRUISE NAME(S)  : pe2006
CRUISE DATES    : 2019/09/23 to 2019/10/03
SHIP NAME       : Pelican
PORTS           : Cocodrie, LA to Cocodrie, LA
CHIEF SCIENTIST : K.Donohue
DATABASE NAME   : aship
DATA FILES      : pe2019_263_79026.raw to pe2019_275_79200.raw

STATUS          :  to do                           done
                  ------                       -----------
                  averaged                       [  x   ]  redone afterwards to glue together 2 pieces
                  loaded                         [  x   ]

                  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
                  2019/09/21 22:04:07  off  300  60  16   3  8   1.25   0.00 0001

HEADING         :
     PRIMARY    : heading from gyro
     CORRECTION : heading correction from adu800
                        NOTE: time-dependent heading corrections
                        applied IN the ensembles
                        (see   cal/rotate/ens_hcorr.ang)

POSITIONS       : gps positions from adu800

CALIBRATION     : (check original processing parameters)
                  additional rotation 0
                  final transducer angle is:
                       (original transducer angle) - (rotate_angle)
                  applied scale factor 1
                  additional scale factor (1.042)   # new window requires scale factor

COMMENTS        : CTD wire interference in some stations
                : bubbles due to heavy seas
                : Experimental algorithm "uvship" applied to better account
                  for lost pings in rough seas.  See note below.

PROCESSOR       : J.Hummon


--- processing parameters at the start  ----------


## (determined from "sonar"): model = os
## (determined from "sonar"): frequency = 75
## (determined from "sonar"): instname = os75
## (determined from "sonar"): pingtype = nb
             badbeam   None
           beamangle   30
          configtype   python
          cruisename   PE2006-furuno
            datatype   uhdas
              dbname   aship
             ens_len   300
             fixfile   aship.gps
          hcorr_inst   adu800
               pgmin   50
            pingpref   None
         proc_engine   python
          ref_method   refsm
     refuv_smoothwin   3
        refuv_source   nav
               sonar   os75nb
            txy_file   aship.gps
           xducer_dx   0
           xducer_dy   0
            yearbase   2019


============================================
(1) check calibration

catwt


   **watertrack**
------------
Number of edited points:  64 out of  68
   amp   = 1.0425  + 0.0003 (t - 270.0)
   phase =   0.01  + 0.0014 (t - 270.0)
            median     mean      std
amplitude   1.0420   1.0425   0.0070
phase       0.0025   0.0079   0.3059
------------

catxy


   **transducer-gps offset**
------------
guessing ADCP (dx=starboard, dy=fwd) meters from GPS
positions from aship.gps
calculation done at 2019/10/11 23:23:38
xducer_dx = 3.470764
xducer_dy = 0.717595
signal = 2451.405582
------------

Apply a scale factor, and small tweak to gps location relative to the ship:


quick_adcp.py --steps2rerun navsteps:calib:rotate --rotate_amplitude 1.042 --xducer_dx 3 --xducer_dy 1 --auto


- Check again:

catwt


   **watertrack**
------------
Number of edited points:  65 out of  69
   amp   = 1.0004  + 0.0002 (t - 270.0)
   phase =   0.02  + 0.0026 (t - 270.0)
            median     mean      std
amplitude   0.9990   1.0004   0.0070
phase       0.0230   0.0233   0.3091
------------

(python3) [jules@joules os75nb.adu800]$ catxy


   **transducer-gps offset**
------------
guessing ADCP (dx=starboard, dy=fwd) meters from GPS
positions from aship.agt
calculation done at 2020/11/23 23:46:24
xducer_dx = 1.018508
xducer_dy = -0.870343
signal = 2451.405582

============================================

(2) try to get rid of some pesky stripes when manuvering on station:

test "uvship" algorithm:

Explanation: The positions stored for each averaging length ("ensemble")
is the position at the end of the ensemble.  Traditionally the ship's speed
during an ensemble is the distance traveled divided by the time taken.
This is calculated using the first difference in positions divided by the
averaging length.  But if whole profiles are missing, this may not be a
good representation.  The "uvship" algorithm uses the average of ship
speeds at the single-ping stage, but only for profiles that contained
ADCP data.  The algorithm is not part of the live data processing, but is
staged for use after the cruise.  In this case it did help.

A copy was made and the following command was run on the copy:

  cd ..
  rsync -a os75nb/ os75nb.uvship
  cd os75nb.uvship
  quick_adcp.py --steps2rerun navsteps:calib --refuv_source uvship --auto

They were compared:
  cd ..
  dataviewer.py -c os75nb os75nb.uvship

and the "uvship" was a definite improvement.

=============================================================================
(3) Edit

dataviewer.py -e

=============================================================================

(4) make the web pages; leverage the sections from wh300


mkdir webpy
cp ../wh300.uvship/sectinfo.txt webpy
quick_web.py --redo

=======================================================

(5) extract the netCDF files

adcp_nc.py adcpdb  contour/os75nb  pe2006 os75nb --ship_name Pelican