Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 279
The number of depth cells is set by
ReadyV
. The value will be calculated based on the Range
and Cell size.
Vertical Beam Correlation Magnitude, Percent Good Data
Format, and Amplitude
These data types are defined in the same way as they are for each of the four Janus beams except they are
only one beam of data per depth cell instead of four. The Vertical Beam Data Types is merged in a single
ensemble with slant beam Data types though the concept of special modes defined in the Sentinel-V firm-
ware.
BIT POSITIONS
BYTE
7/S
6
5
4
3
2
1
0
1
ID CODE (See Table 49 to Table 51)
LSB
2
MSB
3
DEPTH CELL #1, FIELD #1
4
DEPTH CELL #2, FIELD #1
↓
(SEQUENCE CONTINUES FOR UP TO MAX BINS)
↓
258
DEPTH CELL #MAX, FIELD #1
Figure 114.
Vertical Beam Correlation Magnitude, Amplitude, Percent-Good
The number of depth cells is set by
ReadyV
. The value will be calculated based on the Range
and Cell size.
Vertical beam correlation magnitude data give the magnitude of the normalized echo autocorrelation at
the lag used for estimating the Doppler phase change. The Sentinel V ADCP represents this magnitude by
a linear scale between 0 and 255, where 255 is perfect correlation (i.e., a solid target). A value of zero indi-
cates bad correlation values.
Table 49:
Vertical Beam Correlation Magnitude Data Format
Binary
Byte
Field
Description
1,2
ID Code
Stores the vertical beam correlation magnitude data identification word (00 0bh).
3
Depth Cell 1,
Field 1
Stores correlation magnitude data for depth cell #1, vertical beam. See above.
4 – max
Cells 2 – max
These fields store correlation magnitude data for depth cells 2 through max (de-
pending on the ReadyV setting). These fields follow the same format as listed
above for depth cell 1.
