Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 263
Correlation Magnitude, Echo Intensity, and Per-
cent-Good Data Format
BIT POSITIONS
BYTE
7/S
6
5
4
3
2
1
0
1
ID CODE (see Table 40 to Table 42)
LSB
2
MSB
3
DEPTH CELL #1, FIELD #1
4
DEPTH CELL #1, FIELD #2
5
DEPTH CELL #1, FIELD #3
6
DEPTH CELL #1, FIELD #4
7
DEPTH CELL #2, FIELD #1
8
DEPTH CELL #2, FIELD #2
9
DEPTH CELL #2, FIELD #3
10
DEPTH CELL #2, FIELD #4
↓
(SEQUENCE CONTINUES FOR UP TO Maximum # BINS)
↓
511
DEPTH CELL #Maximum , FIELD #1
512
DEPTH CELL #Maximum , FIELD #2
513
DEPTH CELL #Maximum , FIELD #3
514
DEPTH CELL #Maximum , FIELD #4
See Table 40 through Table 42 for a description of the fields.
Figure 106.
Correlation Magnitude, Echo Intensity, and Percent-Good Data Format
The number of depth cells is set by
ReadyV
. The value will be calculated based on the Range
and Cell size.
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 indicates bad cor-
relation values.
Table 40:
Correlation Magnitude Data Format
Binary
Byte
Field
Description
1,2
ID Code
Stores the correlation magnitude data identification word (00 02h).
3
Depth Cell 1,
Field 1
Stores correlation magnitude data for depth cell #1, beam #1. See above.
4
Depth Cell 1,
Field 2
Stores correlation magnitude data for depth cell #1, beam #2. See above.
