LAST CHANGED : 2020/02/25 08:33:06 CRUISE NAME(S) : FK200126 CRUISE DATES : 2020/01/25 20:33:02 to 2020/02/25 08:35:32 SHIP NAME : Falkor PORTS : Albany, AUS to Fremantle, AUS CHIEF SCIENTIST : Julie Trotter DATABASE NAME : a_fk DATA FILES : fk2020_024_73861.raw to fk2020_055_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 : 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 2020/01/25 20:33:03 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 : 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: 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 FK200126 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 a hole of missing heading fixes. $ dataviewer.py $ catwt **watertrack** ------------ Number of edited points: 8 out of 15 amp = 1.0039 + 0.0000 (t - 39.1) phase = 0.06 + 0.0154 (t - 39.1) median mean std amplitude 1.0045 1.0039 0.0085 phase -0.0435 0.0565 0.3701 ------------ $ cd cal/rotate $ patch_hcorr.py Patching hcorr looks okay with the interpolation. $ cd ../.. $ dataviewer.py -c . ../os75nb.orig There's not a clear change in the data from the fix. # 2. ADCP calibration $ catwt **watertrack** ------------ Number of edited points: 8 out of 15 amp = 1.0038 + -0.0000 (t - 39.1) phase = 0.04 + 0.0157 (t - 39.1) median mean std amplitude 1.0045 1.0038 0.0085 phase -0.0560 0.0414 0.3839 ------------ $ 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 2020/11/05 01:35:58 xducer_dx = -0.760216 xducer_dy = 31.477184 signal = 1127.317205 ------------ Signal is just over 1000, probably okay. # 3. Editing points $ dataviewer.py -e Blue intrusion right before 29.2, unclear if real or not Did seafloor marking, removed some small floaters. $ quick_adcp.py --steps2rerun navsteps:calib --auto $ catwt **watertrack** ------------ Number of edited points: 6 out of 9 amp = 1.0008 + 0.0002 (t - 40.1) phase = 0.08 + 0.0324 (t - 40.1) median mean std amplitude 0.9995 1.0008 0.0102 phase 0.0180 0.0780 0.6842 ------------ Even with using a flanking cruise, looking at the catwt there is no need to make changes to the calibration. # 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 major 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 FK200126 os75nb --ship_name Falkor $ ncdump -h contour/os75nb.nc