LAST CHANGED : 2024/09/10 17:57:29 CRUISE NAME(S) : FKt240708 CRUISE DATES : 2024/07/14 09:40:29 to 2024/08/08 02:36:21 SHIP NAME : Falkor (too) PORTS : Callao, Peru to Valparaiso, Chile CHIEF SCIENTIST : Tomer Ketter DATABASE NAME : aship DATA FILES : ftoo2024_195_34526.raw to ftoo2024_220_07200.raw STATUS : to do done ------ ----------- averaged [X] loaded [X] 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 2024/07/14 09:40:29 off 300 75 24 7 16 0.21 0.00 0001 HEADING : PRIMARY : heading from gyro1 CORRECTION : heading correction from seapath CALIBRATION : (1) transducer alignment original transducer alignment: 0.21 additional rotation 0.3 final transducer angle is: 0.21 - (0.3) = -0.09 (2) scale factor original scale factor 1 additional scale factor 1.003 (3) ADCP (dx=starboard, dy=fwd) meters from GPS xducer_dx xducer_dy original: 1 -10 correction 0 0 final offset 1 -10 final = original + corrections COMMENTS : Two gaps in heading correction, patched with patch_hcorr.py. Horizontal scarring at 400 meters in os38nb data resulted in extra editing of data from 0-400 meters. Uvship was used to alleviate vertical scarring during ship speed transitions. PROCESSOR : Vincent Johnson ---------- 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 badbeam None beam_order None beamangle 30 configtype python cruisename FKt240708 datatype uhdas dbname aship ens_len 300 fixfile aship.gps hcorr_inst seapath pgmin 50 pingpref None proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source uvship sonar os38nb txy_file aship.agt xducer_dx 1 xducer_dy -10 yearbase 2024 ================================================== POST PROCESSING STEPS: ================================================== ## 0. This dataset was collected in 2 parts; reprocessing required ## merging the parts back together and reprocessing. ---------------------------------------- ### 1. Check visual oddities ---------------------------------------- # Check for gaps in heading corrections and view other cruise plots: figview.py # Gaps were present in heading correction. # Check watertack calibration coeffieicent: catwt.py # Original Calibration: ---------------------------------------- **watertrack** ---------------------------------------- Number of edited points: 41 out of 53 median mean std amplitude 1.0050 1.0046 0.0075 phase 0.2860 0.3386 0.4534 ---------------------------------------- catxy.py xducer_dx = 1.434252 xducer_dy = -3.878049 signal = 1117.843740 no need to change # patch_hcorr.py applied to interpolate missing heading correction fixes: cd cal/rotate patch_hcorr.py ---------------------------------------- ### 2. ADCP calibration ---------------------------------------- # No calibration applied yet ---------------------------------------- ### 3. Editing points ---------------------------------------- # Edit out bad values: dataviewer.py -e # Apply uvship to os38nb: quick_adcp.py --steps2rerun navsteps:calib --refuv_source uvship --auto # Apply editing: quick_adcp.py --steps2rerun navsteps:calib --auto # Check calibration after editing and applying uvship: catwt.py ---------------------------------------- **watertrack** ---------------------------------------- Number of edited points: 40 out of 51 median mean std amplitude 1.0050 1.0037 0.0064 phase 0.3020 0.3315 0.4233 ---------------------------------------- # Apply final calibrations quick_adcp.py --steps2rerun rotate:navsteps:calib --rotate_amplitude 1.003 --rotate_angle 0.3 --auto catwt **watertrack** ------------ Number of edited points: 40 out of 49 amp = 1.0007 + -0.0000 (t - 205.6) phase = 0.03 + 0.0133 (t - 205.6) median mean std amplitude 1.0020 1.0007 0.0064 phase 0.0000 0.0313 0.4228 ------------ ---------------------------------------- ### 4. Re-check heading correction and other figures ---------------------------------------- # Recheck figures: figview.py ---------------------------------------- ### 5. Check edited, calibrated dataset against original dataset ---------------------------------------- # Compare edited data to original: dataviewer.py -c . ../os38nb.orig # Compare edited os38nb to the other edited sonar: dataviewer.py -c ../wh300 . # uvship helped fix the underway bias observed when the current direction matched the ship direction. ---------------------------------------- ### 6. Make plots and files ---------------------------------------- # Section off data: quick_web.py --interactive # Run this to extract a netCDF file adcp_nc.py adcpdb contour/os38nb FKt240708 os38nb --ship_name 'Falkor (too)' # Run this to look at the headers ncdump contour/os38nb.nc -h