Manual

June 2004 Isis® Sonar User's Manual, Volume 2 103
Table E-8. The TELEMETRY structure for a TGT or CON file
Structure’s Element
Name
Bytes
offset
Data
Type
Remarks, Values, Ranges,
Examples, etc.
total bytes used for this structure: 89
Day
0 UCHAR Annotation day
Month
1 UCHAR Annotation month
Hour
2 UCHAR Annotation hour
Minute
3 UCHAR Annotation minute
Second
4 UCHAR Annotation second
Hsec
5 UCHAR Annotation millisecond
NavHour
6 UCHAR Hour from Nav clock
NavMinute
7 UCHAR Minute from Nav clock
NavSecond
8 UCHAR Second from Nav clock
Year
9 WORD Year from Nav clock
Ycoord
11 DOUBLE Northing or Latitude
Xcoord
19 DOUBLE Easting or Longitude
FishSpeed
27 FLOAT Speed of tow fish in knots
FishHeading
31 FLOAT Fish heading in degrees
FishLayback
35 FLOAT Distance over ground from ship to
fish
FishDepth
39 FLOAT Distance from sea surface to tow
fish
OceanTide
43 FLOAT Ocean tide in meters
FishAlt
47 FLOAT Distance from tow fish to seafloor
PingNumber
51 ULONG
EventNumber
55 SHORT Usually assigned to contact by
outside source
Appendix E: Using the Target Utility