LAST CHANGED : 2023/12/22 CRUISE NAME(S) : FKt230527 CRUISE DATES : 2023/05/27 to 2023/05/30 SHIP NAME : Falkor (too) PORTS : Balboa, Panama to Puntarenas, Costa Rica CHIEF SCIENTIST : Paul Duncan DATABASE NAME : a_ftoo DATA FILES : ftoo2023_146_57444.raw to ftoo2023_149_50400.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 2023/05/27 16:02:25 off 300 100 12 7 16 0.91 0.00 0001 2023/05/28 17:02:27 off 300 100 12 7 16 0.91 0.00 0001 2023/05/29 18:02:30 off 300 100 12 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: xducer_dx=0 xducer_dy=0 correction 0 -10 final offset 0 -10 COMMENTS : Gaps in heading existed. I performed a dxdy calibration. Heading correction was determined from the first 8 cruises of 2023 and was applied here. Data below the bottom was removed, as well as small bits of data at the the bottom of the sonars range was removed. Editing and updating the dxdy correction improved the data during heading changes. PROCESSOR : Jamie Ash REVIEWED : Jules Hummon --- 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 = bb beamangle 30 cruisename FKt230527 datatype uhdas dbname a_ftoo ens_len 300 fixfile a_ftoo.gps frequency 38 hcorr_inst seapath instname os38 model os pingtype bb proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source nav sonar os38bb txy_file a_ftoo.agt xducer_dx 0 xducer_dy -10 yearbase 2023 ================================================== POST PROCESSING STEPS: ================================================== ------------------------------------------------------------------------------ ### 1. Check visual oddities ------------------------------------------------------------------------------ # I ran this to look for gaps in the cruise track. plot_nav.py nav/a*.gps figview.py # I ran this to looking for missing heading correction values or missing positions. dataviewer.py # patch h_corr.py is not required for this cruise. # Some data below the bottom will need to be removed, and some vertical stripes # will be addressed with a catxy calibration. ### Run this: (to check watertrack calibration after patching hcorr) catwt.py catbt.py catxy.py **watertrack** ----------- Number of edited points: 2 out of 2 median mean std amplitude 1.0045 1.0045 0.0064 phase 0.9515 0.9515 0.3005 ----------- **transducer-gps offset** ----------- guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_ftoo.gps calculation done at 2023/05/30 14:32:39 xducer_dx = 2.698542 xducer_dy = -9.241256 signal = 114.505651 ----------- # No bottom track data exist for this cruise. # I will apply a -10m adjustment to the dy, and -0.7 phase as indicated # over the course of the first 8 cruises of 2023 ------------------------------------------------------------------------------ ### 2. ADCP calibration ------------------------------------------------------------------------------ # I ran this to run the calibration. quick_adcp.py --steps2rerun rotate:apply_edit:navsteps:calib --xducer_dy -10 --auto quick_adcp.py --steps2rerun rotate:navsteps:calib --rotate_angle -0.7 --auto # I ran this to look at the watertrack calibration again. catxy.py **transducer-gps offset** ----------- guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_ftoo.agt calculation done at 2023/10/09 19:08:15 xducer_dx = 2.546277 xducer_dy = 0.295382 signal = 114.505649 ----------- ------------------------------------------------------------------------------ ### 3. Editing points ------------------------------------------------------------------------------ # I ran this to go through the dataset and edit out bad values. dataviewer.py -e # I ran this to recompute the calibration residuals. quick_adcp.py --steps2rerun navsteps:calib --auto ### Run this: catwt.py catxy.py # At dday 149.1 there was a vertical strip of bad data in the v direction. # In the wh300 this can be seen as well, and is associated with a spike in ship # speed. Since the stripe spans a relatively short time interval, I removed it. ------------------------------------------------------------------------------ ### 4. Re-check heading correction and other figures ------------------------------------------------------------------------------ ### Run this: (Is there anything strange with any of the figures?) figview.py ------------------------------------------------------------------------------ ### 5. Check edited, calibrated dataset against original dataset ------------------------------------------------------------------------------ # I ran this to compare the edited data to the original data. dataviewer.py -c . ../os38bb.orig # I ran this to compare this sonar with another sonar. dataviewer.py -c . ../os38nb.cal/ ------------------------------------------------------------------------------ ### 6. Make plots and files ------------------------------------------------------------------------------ # I ran this to section the cruise. 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/os38bb FKt230527 os38bb --ship_name "Falkor (too)" # I ran this to check the headers. ncdump -h contour/os38bb.nc | egrep '(cruise_id|sonar|yearbase)' # complete