LAST CHANGED : 2023/12/22 CRUISE NAME(S) : FKt230602 CRUISE DATES : 2023/06/02 to 2023/06/21 SHIP NAME : Falkor (too) PORTS : Puntarenas, Costa Rica to Puntarenas, Costa Rica CHIEF SCIENTIST : Beth Orcutt DATABASE NAME : a_ftoo DATA FILES : ftoo2023_152_09270.raw to ftoo2023_171_43200.raw STATUS : to do done ------ ----------- averaged [ X ] at sea loaded [ X ] 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 : 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 2023/06/02 02:39:31 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 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. A strong scattering layer was present and data was removed a the editors discretion. 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 FKt230602 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 **transducer-gps offset** ----------- guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_ftoo.gps calculation done at 2023/06/21 12:05:55 xducer_dx = -1.177908 xducer_dy = -9.800355 signal = 1359.758058 ----------- **watertrack** ----------- Number of edited points: 49 out of 52 median mean std amplitude 1.0010 1.0015 0.0093 phase 0.6920 0.7435 0.3065 ---------- # Similar to previous cruises, there are glitches in the ship speed that # result in spikes in the absolute reference layer velocity at 163.5. # patch_hcorr cannot correct this issue. I will likely remove the bad data. # Since we have good watertrack 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 # To recompute the calibration residuals I ran. quick_adcp.py --steps2rerun navsteps:calib --auto # To check the calibration coeficients I ran. catxy.py catwt.py **watertrack** ----------- Number of edited points: 49 out of 51 median mean std amplitude 1.0040 1.0041 0.0077 phase 0.0320 0.0459 0.3023 ----------- **transducer-gps offset** ----------- guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_ftoo.agt calculation done at 2023/11/08 01:09:22 xducer_dx = 0.298975 xducer_dy = -0.020158 signal = 1359.758072 ----------- ------------------------------------------------------------------------------ ### 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 . # The rotaion helped. There is a vertical strip in the beginning of the data # set that is in both the os38nb and os38bb that I will leave in because it # is not associated with a heading or speed change. ------------------------------------------------------------------------------ ### 5. Make plots and files ------------------------------------------------------------------------------ # I ran this to divvy up the cruise sections. quick_web.py --interactive # 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 FKt230602 os38nb --ship_name "Falkor too" # I ran this to look at the headers. ncdump -h contour/os38nb.nc | egrep '(cruise_id|sonar|yearbase)' # complete.