LAST CHANGED : 2020/01/24 07:31:45 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 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 2020/01/22 21:46:27 off 300 80 8 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: 44.47 (44.47) - (none) applied scale factor 1.0 additional scale factor (none) final scale factor: 1.0 COMMENTS : 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 27 amp = 0.9984 + 0.0002 (t - 84.2) phase = -0.06 + 0.0114 (t - 84.2) median mean std amplitude 0.9980 0.9984 0.0108 phase -0.0100 -0.0646 0.3323 ------------ 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 = bb beamangle 30 cruisename FK200122 datatype uhdas ens_len 300 fixfile a_fk.gps frequency 75 hcorr_inst seapath instname os75 model os pingtype bb proc_engine python ref_method refsm refuv_smoothwin 3 refuv_source nav sonar os75bb txy_file a_fk.agt xducer_dx 1 xducer_dy 21 yearbase 2020 ========================================= PROCESSING STEPS: ========================================= # Processing starts in the os75bb 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 5 amp = 1.0030 + -0.0206 (t - 22.3) phase = -0.49 + 1.5722 (t - 22.3) median mean std amplitude 1.0030 1.0030 0.0057 phase -0.4920 -0.4920 0.4313 ------------ $ cd cal/rotate $ patch_hcorr.py Patching hcorr looks okay with the interpolation. $ cd ../.. $ dataviewer.py -c . ../os75bb.orig There's a clear change in the data from the fix. # 2. ADCP calibration $ catwt **watertrack** ------------ Number of edited points: 2 out of 5 amp = 1.0025 + -0.0232 (t - 22.3) phase = -0.51 + 1.4768 (t - 22.3) median mean std amplitude 1.0025 1.0025 0.0064 phase -0.5115 -0.5115 0.4052 ------------ $ 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 2020/11/03 01:29:33 xducer_dx = -29.450159 xducer_dy = 6.598094 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 = 0.9995 + -0.0387 (t - 22.3) phase = -0.34 + 2.3557 (t - 22.3) median mean std amplitude 0.9995 0.9995 0.0106 phase -0.3410 -0.3410 0.6463 ------------ # 4. Re-check heading correction $ figview.py Seems fine. # 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 . ../os75bb.orig Data looks fine, stripes from patched heading. # 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 os75bb --ship_name Falkor $ ncdump -h contour/os75bb.nc