Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 237
WS – Bin Size
Purpose
Selects the volume of water for one measurement cell (bin).
Format
WSnnn
Range
nnn = 25 to 600 cm
Default
See table below
Recommended Setting. It is not recommended to set the cell size below the minimum or above the
maximum range shown in Table 33. Set using
Plan
.
Description The Sentinel V Real-Time collects data over a variable number of bins. WS sets the size of
each bin in vertical centimeters.
Table 33.
Cell Size
System
Cell Size (Default
)
Minimum Cell size
Maximum Cell Size
Sentinel V 100m (307.2kHz)
400 cm
100 cm
600 cm
Sentinel V 50m (491.52kHz)
200 cm
50 cm
400 cm
Sentinel V 20m (983.04kHz)
100 cm
25 cm
200 cm
WV – Ambiguity Velocity
Purpose
Sets the radial ambiguity velocity.
Format
WVnnnn
Range
nnnn = 2 to 700 cm/s
Default
WV0175
Recommended Setting. Set using the
Plan
.
Description Set WV as low as possible to attain maximum performance, but not too low or ambiguity
errors will occur. Rule of thumb: Set WV to the maximum relative horizontal velocity be-
tween water-current speed and Sentinel V Real-Time speed.
The WV command (ambiguity velocity setting) sets the maximum velocity that can be
measured along the beam when operating in water mode 1 (WM1). WV is used to improve
the single-ping standard deviation. The lower the value of the WV command, the lower the
single-ping standard deviation.
Set the WV command based on the maximum apparent velocity (Sentinel V Real-Time mo-
tion plus water speed). The following formula is used to determine the setting of the WV
command: WV = (Max. Apparent Vel. cm/s) * sin(beam angle) * 1.5, where 1.5 is a safety
factor.
