September
2017
Sentinel V SC and RT Operation Manual
Page 194
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
BA - Evaluation Amplitude Minimum
Purpose
Sets the minimum value for valid bottom detection.
Format
BAnnn
Range
nnn = 1 to 255 counts
Default
BA20
The default setting for this command is recommended for most applications.
Description BA sets the minimum amplitude of an internal bottom-track filter that determines bottom
detection. Reducing #BA increases the bottom-track detection range, but also may increase
the possibility of false bottom detections.
BC - Correlation Magnitude Minimum
Purpose
Sets minimum correlation magnitude for valid velocity data.
Format
BCnnn
Range
nnn = 0 to 255 counts
Default
BC220
The default setting for this command is recommended for most applications.
Description Sets a minimum threshold for good bottom-track data. Any bottom-track data with a corre-
lation magnitude less than this value will be flagged as bad.
A count value of 255 is a perfect correlation (i.e. solid target).
BE - Error Velocity Maximum
Purpose
Sets maximum error velocity for good bottom-track data.
Format
BEnnnn
Range
nnnn = 0 to 9999 mm/s
Default
BE1000
The default setting for this command is recommended for most applications.
The default setting is set purposely high and as a result effectively disabled. We
recommend extreme caution and testing before changing this setting.
Data rejected by this
command is lost and cannot be regained.
Description The Sentinel V RT uses this parameter to determine good bottom-track velocity data. If the
error velocity is greater than this value, the Sentinel V RT marks as bad all four beam veloc-
ities (or all four coordinate velocities, if transformed). If three beam solutions are allowed
(see
EX – Coordinate Transformation
) and only three beams are good, then the data is ac-
cepted since four good beams are needed for error velocity calculation.
