LAST CHANGED : 2020/10/27 08:04:08 CRUISE NAME(S) : FK200930 CRUISE DATES : 2020/09/29 22:42:42 to 2020/10/27 08:03:56 SHIP NAME : Falkor PORTS : Brisbane, AUS to Brisbane, AUS CHIEF SCIENTIST : Robin Beaman DATABASE NAME : a_fk DATA FILES : fk2020_272_81746.raw to fk2020_300_28800.raw STATUS : to do done ------ ----------- averaged [ X ] loaded [ X ] # loaded 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 : wh300 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 2020/09/29 22:42:42 off 120 70 2 7 2 44.63 0.00 0001 2020/10/01 01:55:08 off 120 70 2 7 2 44.63 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 : wh300 original alignment: 44.63 additional rotation: none final transducer angle is: 44.63 (44.63) - (none) original scalefactor: 1.0 additional scale factor (none) final scale factor: 1.0 COMMENTS : Falkor ROV cruise off of Australia - lots of small groups of ADCP data. 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: 22 out of 37 amp = 0.9998 + -0.0000 (t - 83.0) phase = -0.11 + 0.0098 (t - 83.0) median mean std amplitude 1.0020 0.9998 0.0087 phase -0.0960 -0.1090 0.2784 ------------ 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 = wh ## (determined from "sonar"): frequency = 300 ## (determined from "sonar"): instname = wh300 ## (determined from "sonar"): pingtype = bb beamangle 20 cruisename FK200930 datatype uhdas ens_len 120 fixfile a_fk.gps frequency 300 hcorr_inst seapath instname wh300 model wh pingtype bb proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source nav sonar wh300 txy_file a_fk.agt xducer_dx 2 xducer_dy 18 yearbase 2020 ========================================= PROCESSING STEPS: ========================================= # Processing commands start in the wh300 directory. # 1. Check heading correction $ plot_nav.py nav/a_fk.gps $ figview.py There's a single missing heading fix with no other points around it. Ignoring this point as a likely warmup of UHDAS at the beginning of the cruise. # 2. ADCP calibration $ catwt **watertrack** ------------ Number of edited points: 2 out of 5 amp = 1.0060 + -0.0007 (t - 295.4) phase = -0.31 + -0.0125 (t - 295.4) median mean std amplitude 1.0060 1.0060 0.0042 phase -0.3070 -0.3070 0.0792 ------------ $ catbt No bottom track data found. $ catxy **transducer-gps offset** ------------ guessing ADCP (dx=starboard, dy=fwd) meters from GPS positions from a_fk.agt calculation done at 2020/10/27 08:04:07 xducer_dx = 2.815266 xducer_dy = 10.400014 signal = 126.357227 ------------ Signal is very low, probably not good for calibration. And we're using calibration data from a different cruise anyway. # 3. Editing points $ dataviewer.py -e Applied neighbor algorithm requiring at least *1* full neighbor to count. $ quick_adcp.py --steps2rerun navsteps:calib --auto $ catwt **watertrack** ------------ Number of edited points: 0 out of 2 amp = nan + nan (t - nan) phase = nan + nan (t - nan) median mean std amplitude nan nan -0.0000 phase nan nan -0.0000 ------------ Not concerning as we're using flanking cruise calibration data. # 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 . ../wh300.orig No real changes. # 6. Make plots and files $ quick_web.py --interactive $ figview.py webpy $ quick_adcp.py --steps2rerun matfiles --auto $ adcp_nc.py adcpdb contour/wh300 FK200930 wh300 --ship_name Falkor $ ncdump -h contour/wh300.nc