APPENDIX 3 DIGITAL INTERFACE
AP-15
TTM - Tracked Target Message
$**TTM, xx, x.x, x.x, a, x.x, x.x, a, x.x, x.x, a, c--c, a, a, hhmmss.ss, a *hh<CR><LF>
1 2 3 4 5 6 7 8 9 10 11
12 13
14 15
1. Target number (00 to 100)
2. Target distance from own ship (0.0000 to 99.9994)
3. Bearing from own ship,degrees (0.00 to 360.04)
4. True or Relative (T, R)
5. Target speed*
6. Target course, degrees*
7. True or Relative*
8. Distance of closet point of approach*
9. Time to CPA, min., "-" increasing*
10. Speed/distance units (K=km, km/h; N=nm, kn; S=sm, mph)
11. Target name*
12. Target status*
13. Reference target*
14. UTC of data*
15. Type of acquisition*
Note: If a received TTM sentence is valid, the contents of the received
sentence are output.
*: These fields may be blank, yet still valid, depending on the data available.
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