LAST CHANGED : 2020/01/24 07:31:51 CRUISE NAME(S) : FK200122 CRUISE DATES : 2020/01/22 21:43:25 to 2020/01/24 07:33:25 SHIP NAME : Falkor PORTS : Albany, AUS to Albany, AUS CHIEF SCIENTIST : Paul Duncan DATABASE NAME : a_fk DATA FILES : fk2020_021_78085.raw to fk2020_023_21600.raw STATUS : to do done ------ ----------- averaged [ X ] #done 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 calibration [ 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 2020/01/22 21:46:27 off 300 55 16 7 8 44.47 0.00 0001 HEADING : PRIMARY : heading from gyro CORRECTION : heading correction from seapath NOTE: time-dependent heading corrections applied IN the ensembles (see cal/rotate/ens_hcorr.ang) POSITIONS : gps positions from cnav CALIBRATION : os75 original rotation: 44.47 additional rotation 0 final transducer angle is: 44.7 (44.47) - (none) applied scale factor 1.0 additional scale factor (none) final scale factor: 1.0 COMMENTS : Cruise is a one day test cruise in and out of Albany, AUS. Falkor cruises have a small number of edited watertrack points due to procedures. In this case we use a nearby cruise with sufficient points as a measure of whether the calibration is good or not. In this case FK200308 is used, with the statistics: **watertrack** ------------ Number of edited points: 19 out of 26 amp = 1.0004 + 0.0002 (t - 83.6) phase = 0.03 + 0.0112 (t - 83.6) median mean std amplitude 1.0000 1.0004 0.0106 phase 0.0350 0.0284 0.3024 ------------ As the median amplitude and phase for this cruise do not need correction, we will not apply a correction to the current cruise. PROCESSOR : Joseph Gum --- processing parameters ---------- ## (determined from "sonar"): model = os ## (determined from "sonar"): frequency = 75 ## (determined from "sonar"): instname = os75 ## (determined from "sonar"): pingtype = nb beamangle 30 cruisename FK200122 datatype uhdas ens_len 300 fixfile a_fk.gps frequency 75 hcorr_inst seapath instname os75 model os pingtype nb proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source nav sonar os75nb txy_file a_fk.agt xducer_dx 1 xducer_dy 21 yearbase 2020 ========================================= PROCESSING STEPS: ========================================= # Processing starts in the os75nb directory. # 1. Check heading correction $ plot_nav.py nav/a_fk.gps $ figview.py We have two holes of missing heading fixes. $ dataviewer.py $ catwt **watertrack** ------------ Number of edited points: 2 out of 3 amp = 1.0005 + -0.0026 (t - 22.3) phase = -0.11 + 0.2474 (t - 22.3) median mean std amplitude 1.0005 1.0005 0.0007 phase -0.1140 -0.1140 0.0679 ------------ $ cd cal/rotate $ patch_hcorr.py Patching hcorr looks okay with the interpolation. $ cd ../.. $ dataviewer.py -c . ../os75nb.orig There's a clear change in the data from the fix. # 2. ADCP calibration $ catwt **watertrack** ------------ Number of edited points: 2 out of 3 amp = 1.0000 + -0.0052 (t - 22.3) phase = -0.14 + 0.1418 (t - 22.3) median mean std amplitude 1.0000 1.0000 0.0014 phase -0.1365 -0.1365 0.0389 ------------ $ catbt No bottom track points found $ catxy **transducer-gps offset** ------------ guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_fk.agt calculation done at 2020/10/16 21:38:59 xducer_dx = -33.223655 xducer_dy = 7.153248 signal = 109.980638 ------------ Signal is under 1000, no adjustment needed? Or is it too short a cruise? Due to the lack of points, it's hard to calibrate to start. Heading straight to editing points. # 3. Editing points $ dataviewer.py -e Chopped off data acquisition in port while waiting to get underway/return. $ quick_adcp.py --steps2rerun navsteps:calib --auto $ catwt **watertrack** ------------ Number of edited points: 2 out of 2 amp = 1.0000 + -0.0052 (t - 22.3) phase = -0.14 + 0.1418 (t - 22.3) median mean std amplitude 1.0000 1.0000 0.0014 phase -0.1365 -0.1365 0.0389 ------------ # 4. Re-check heading correction $ figview.py Seems fine. # 5. Check calibration Since we're using a calibration from a flanking cruise, there's not much to be done here. We compare against original data just in case. $ dataviewer.py -c . ../os75nb.orig No real changes. # 6. Make plots and files $ mkdir webpy $ cp ../wh300/webpy/sectinfo.txt webpy/. $ quick_web.py --redo $ figview.py webpy $ quick_adcp.py --steps2rerun matfiles --auto $ adcp_nc.py adcpdb contour/os75nb FK200122 os75nb --ship_name Falkor $ ncdump -h contour/os75nb.nc