SSP

[ikalugin]

You could also use different arrays to triangulate.

[blackcan]

Originally Posted by FPSchazly

The manual has info on the SSP (the manual is full of goodies!), so you can check that information out there mainly because I'm not too terribly well versed on the very inner workings of it. The main thing you need to get from SSP is if there is a layer or not. If there is a layer, you can get above or below the layer to avoid a contact below or above the layer, respectively. So, you're going to have a situation where you either have a layer or you don't in this game.

If the line on the SSP goes down one way and then changes direction another way with a horizontal line at that point, you have a layer and its depth is displayed. If it is a straight line with no change in direction that ends abruptly, there is no layer.



It is very much possible to determine the range of a contact passively. And no you don't need TMA if you have all the information. The TMA is to help you get a solution when you don't have all of the information, surface or sub-surface contacts.

1) You can use the WAA RNG on the broadband of the Seawolf to instantly determine a contact's range passively.

2) TMA is how you do it otherwise. In math, you need one equation to solve for one unknown. If you know three things--in this case it would be course, speed, and bearing--then the only unknown is range. The one equation you need to solve that is the TMA plot. If you know three things, only one solution will fit in the TMA plot. You can also "bypass" this one unknown thing to some degree by making several different course changes. This also locks the TMA down to a very few number of solutions. However, that's getting more advanced. The manual also has more info on that, too.

Thats a few awesome hints! Thank you i understand SSP now way better

Originally Posted by ikalugin

You could also use different arrays to triangulate.

How? do i make 1 track for every array (2) and then merge them in TMA?

[Pisces]

Originally Posted by blackcan

...
How? do i make 1 track for every array (2) and then merge them in TMA?

Yes, assign a tracker on the towed array, and one tracker on the hull, or bow array. Then Master them together (make sure they belong to the same target) in the TMA screen . Triangulation works best if you have the contact on your beam/left-right axis.

[blackcan]

Originally Posted by Pisces

Yes, assign a tracker on the towed array, and one tracker on the hull, or bow array. Then Master them together (make sure they belong to the same target) in the TMA screen . Triangulation works best if you have the contact on your beam/left-right axis.

Does it matter if I designate it on the Narrowband or broadband?

[Pisces]

Only broadband-trackers can record demon lines(speed indicator). So get one of those to help with TMA. But you need narrowband for good ID of the frequencies to determine the turns per knot. So narrowband tracker until you have a conclusive TPK Id. Then change to broadband tracker for Demon. Doesn't matter if that creates a new Sierra contact. Just merge it into the master.

[blackcan]

The weird thing is it often Stay the same contact (as long as I use the same array of course) but if I do what you said my sonar gives that contact 2 tracker is that normal ?

[Pisces]

Well, you can drag the tracker away from the contact to let go of it. And re-assign one to a contact by having the bearing cursor on it and mark the bearing. I don't know if it is normal, or a bug. I've seen it happen, but didn't worry too much about it and simply corrected it.

It's not desirable to have more than one tracker assigned to the same contact, especially in target rich environments. You only have 4 trackers per array. They run out quickly.