SUBSIM Radio Room Forums - View Single Post - SCXIIC:solving out the bearing ambiguity in towed array narrowband

sonar732 · 02-15-08, 04:37 PM

You actually didn't do it the way I was intending.

For instance, just because you couldn't get a contact off of the UUV doesn't mean that he wasn't there. As evident by the light 50hz tonal, he was going slow...that's why the UUV didn't pick him up...granted, the distance didn't help the UUV either. Keep the UUV going until it runs out of gas. Shoot...with the Seawolf, I've seen players have 2 UUV's going to get a great TMA reading. In your situation, I would've sent one on the course of each of the mirrored contact bearings. Sooner or later you would've came up with something.

Also, just because you have a 50hz tonal doesn't mean you've got an Akula-I. IIRC, the Akula-I is defaulted as the first selection in classification. All non-American subs have the 50hz tonal. Have the frequency range set for 100hz first, then expand to gain a better understanding of which class it is.

02-15-08, 04:37 PM	#5
sonar732 The Old Man Join Date: Jul 2003 Location: Central MO Posts: 1,562 Downloads: 6 Uploads: 0	You actually didn't do it the way I was intending. For instance, just because you couldn't get a contact off of the UUV doesn't mean that he wasn't there. As evident by the light 50hz tonal, he was going slow...that's why the UUV didn't pick him up...granted, the distance didn't help the UUV either. Keep the UUV going until it runs out of gas. Shoot...with the Seawolf, I've seen players have 2 UUV's going to get a great TMA reading. In your situation, I would've sent one on the course of each of the mirrored contact bearings. Sooner or later you would've came up with something. Also, just because you have a 50hz tonal doesn't mean you've got an Akula-I. IIRC, the Akula-I is defaulted as the first selection in classification. All non-American subs have the 50hz tonal. Have the frequency range set for 100hz first, then expand to gain a better understanding of which class it is.