Wl - Water Reference Layer; Wn - Number Of Depth Cells; Wp - Pings Per Ensemble - Teledyne WORKHORSE Operation Manual

WorkHorse H-ADCP Operation Manual

WL - Water Reference Layer

Purpose Sets depth cell range for water-track reference layer averaging.
Format WLsss,eee
Range sss = Starting depth cell (0 to 128; 0 disables this feature)
eee = Ending depth cell (1 to 128)
Default WL0,5
Recommended Setting. The default setting for this command is recommended for most applications.
Description You can use the WL-command to lower the effects of transducer motion on present
measurements for multiple-ping ensembles (WP > 1). The H-ADCP does this by averag-
ing the velocities of a column of water and subtracting that average from each of the
depth cell velocities. The H-ADCP accumulates the resulting average velocity and depth
cell velocities. At the end on an ensemble, the H-ADCP adds the average reference veloci-
ty back to the normalized depth cell velocities. This results in quieter data for depth cells
in which there were few good samples.
WN – Number of Depth Cells
Purpose Sets the number of depth cells over which the H-ADCP collects data.
Format WNnnn
Range nnn = 1 to 255 depth cells
Default WN30
Recommended Setting. Set using SurfaceView.
Description The range of the H-ADCP is set by the number of depth cells (WN) times the size of each
depth cell (WS).
WP – Pings Per Ensemble
Purpose Sets the number of pings to average in each data ensemble.
Format WPnnnnn
Range nnnnn = 0 to 16384 pings
Default WP30
Recommended Setting. Set using SurfaceView.
Description WP sets the number of pings to average in each ensemble before sending/recording the
data.
1. If WP = zero the H-ADCP does not collect water-profile data.
2. The H-ADCP automatically extends the ensemble interval (TE) if WP x TP > TE.
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
May 2015
Page 177