LAST CHANGED : 2023/12/22 CRUISE NAME(S) : FKt230508 CRUISE DATES : 2023/05/08 to 2023/05/13 SHIP NAME : Falkor (too) PORTS : San Juan, Puerto Rico to Colon, Panama CHIEF SCIENTIST : Paul Duncan DATABASE NAME : a_ftoo DATA FILES : ftoo2023_127_79602.raw to ftoo2023_132_43200.raw STATUS : to do done ------ ----------- averaged [ X ] at sea 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 : os38 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 2023/05/08 22:11:42 off 300 75 24 7 16 0.91 0.00 0001 HEADING : PRIMARY : heading from gyro1 CORRECTION : heading correction from seapath NOTE: time-dependent heading corrections applied IN the ensembles (see cal/rotate/ens_hcorr.ang) POSITIONS : gps positions from posmv_gps CALIBRATION : (check original processing parameters) (1) transducer alignment original transducer alignment: 0.91 additional rotation 0.7 final transducer angle is: 0.21 = 0.91 - 0.7 (2) scale factor original scale factor 1 additional scale factor (none) (3) ADCP (dx=starboard, dy=fwd) meters from GPS xducer_dx xducer_dy original: 0 0 correction 0 -10 final offset 0 -10 COMMENTS : I performed a dxdy calibration. A good estimate of heading correction and transducer offset is available from adjacent cruises. Data below the bottom was removed, as well as small bits of data at the the bottom of the sonars range was removed. Due to a strong scattering layer, some data was flagged as "below that bottom". Some of this data was able to be reclaimed. Editing and updating the dxdy correction improved the data during heading changes. PROCESSOR : Jamie Ash --- final processing parameters from dbinfo.txt ---------- #-------------------- ## (determined from "sonar"): model = os ## (determined from "sonar"): frequency = 38 ## (determined from "sonar"): instname = os38 ## (determined from "sonar"): pingtype = nb beamangle 30 cruisename FKt230508 datatype uhdas dbname a_ftoo ens_len 300 fixfile a_ftoo.gps frequency 38 hcorr_inst seapath instname os38 model os pingtype nb proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source nav sonar os38nb txy_file a_ftoo.agt xducer_dx 0 xducer_dy -10 yearbase 2023 ================================================== POST PROCESSING STEPS: ================================================== ------------------------------------------------------------------------------ ### 1. Check visual oddities ------------------------------------------------------------------------------ ### Run this: (to look for gaps in the cruise track) plot_nav.py nav/a*.gps figview.py dataviewer.py catwt.py catxy.py # Insufficient calibration information; # use adjacent cruises for calibration values. # place holders do exists in the heading correction. # I'll need to run patch h_corr. ### Run this: (to interpolate for missing heading correction fixes) cd cal/rotate patch_hcorr.py cd ../.. # Similar to previous cruises, there are glitches in the ship speed that # result in spikes in the absolute reference layer velocity. # patch_hcorr cannot correct this issue. I will likely remove the remaining bad # data. Since we have good water track data, I will apply the suggested phase # calibration. ------------------------------------------------------------------------------ ### 2. ADCP calibration ------------------------------------------------------------------------------ # To apply the calibration adjustment I ran. quick_adcp.py --steps2rerun rotate:apply_edit:navsteps:calib --xducer_dy -10 --auto quick_adcp.py --steps2rerun rotate:apply_edit:navsteps:calib --rotate_angle 0.7 --auto ------------------------------------------------------------------------------ ### 3. Editing points ------------------------------------------------------------------------------ # To go through the dataset and edit out bad values I ran. dataviewer.py -e ------------------------------------------------------------------------------ ### 4. Check edited, calibrated dataset against original dataset ------------------------------------------------------------------------------ ### Run this: (Has this corrected the problems in the original?) dataviewer.py -c . ../os38nb ### Run this to compare this sonar with another sonar (after both are finished) dataviewer.py -c ../wh300.cal . # Overall, the data is a bit noisy, and as much was kept in as possible. ------------------------------------------------------------------------------ ### 5. Make plots and files ------------------------------------------------------------------------------ # To carry over the section info from another sonar. mkdir webpy cp ../wh300/webpy/sectinfo.txt webpy/ quick_web.py --redo # I ran this to extract matlab files. quick_adcp.py --steps2rerun matfiles --auto # I ran this to extract a netCDF file. adcp_nc.py adcpdb contour/os38nb FKt230508 os38nb --ship_name "Falkor too" # I ran this to look at the headers. ncdump -h contour/os38nb.nc | egrep '(cruise_id|sonar|yearbase)' # complete.