Quote:
Originally Posted by ikalugin
I find that happening a lot (bearing difference between towed and bow), I wonder if one could use it to triangulate the range to target (provided that the point from where the bearing is calculated from for towed is the center of towed array and towed array is long enough).
|
Yes, you certainly can if the TA is streamed far enough. That is why I wanted to make the distinction between the two. At really close quarters even the bow and hull can be used to triangulate. But bow and TA is obviously better.
On the TMA plot the lines of the Bow, Hull and TA should intersect in the location of the contact (soundsource). But there may be some inaccuracy in the recording of the bearing, so the crossing point might be quite off in distance (as the intersection is so narrow).
Iirc FPSchalzy in his tutorial videos on youtube said it could be due to the timing of the tracker not being synchronised somehow between multiple sensors. Afaik, that only occurs with the first lines when you make a new tracker assignment. Most of the time I find the triangulation between multiple sensors to be spot on. But maybe I missed something he didn't.