sonobuoy triangulation

Holes · 01-30-06, 05:26 PM

Sonobuoy triangulation question. When plying the FFG, I mark a contact with 3 or more directional sonobuoys, the LOB cross. I can mark this location on the 2D map and when I show truth the contact is pretty close. However, when I mark the cross LOB on the TMA the contact is way off. I put 4 DIFAR sonobuoys in a box patteren, with a sub in the middel. When placing the tma ruler on the cross bearing lines with the current location mark in the middel the contact shows up out side the sonobouy box I created. I don't get it.

01-30-06, 05:26 PM	#1
Holes Nub Join Date: Jan 2006 Posts: 2 Downloads: 0 Uploads: 0	sonobuoy triangulation Sonobuoy triangulation question. When plying the FFG, I mark a contact with 3 or more directional sonobuoys, the LOB cross. I can mark this location on the 2D map and when I show truth the contact is pretty close. However, when I mark the cross LOB on the TMA the contact is way off. I put 4 DIFAR sonobuoys in a box patteren, with a sub in the middel. When placing the tma ruler on the cross bearing lines with the current location mark in the middel the contact shows up out side the sonobouy box I created. I don't get it.