TDC reset, how do you do it?

07-18-07, 09:33 AM

@werner

Thats a good point. Just curious though, if the second target was heading in the opposite direction then wouldn't setting the AOB before the second range/bearing mark help the PK to judge better..if it was previously set for the first target ?

Actually, now I think about it, it probably doesn't take AOB into consideration at this stage.

WernerSobe · 07-18-07, 10:42 AM

It doesnt matter how bad the solution is until you fire the fish. And you can correct the sollution at any time.

So leaving the position keeper turning even with wrong data will not screw your firing solution that you have not set up yet. So let the position keeper going, and put the new dataset one by one. Just make sure you resend the range last because it also sends the bearing. You want the position keeper to start calculations with the right bearing right?

Powerthighs · 07-18-07, 01:25 PM

Correct that you don't have to reset it. I usually leave the TDC on for the entire patrol.

Once you have speed and AOB set correctly, one last range/bearing input will ensure the PK is tracking accurately. If you ever change speed or AOB you need to do another range/bearing input.

All that matters is that the PK is correct by the time you shoot. Inaccuracies while setting up a solution don't matter.

[EDIT] I basically seconded what Werner said above.

Powerthighs · 07-18-07, 01:34 PM

Another way to look at it is range/bearing tells the PK where the target is now. Speed and AOB tell the PK how the target will move in the future.

Once you have Speed and AOB set correctly (the ability to know future movement), one last range/bearing input (the current positition) will make the PK solution accurate, regardless of how much it was wrong due to previous activity or previous targets.

07-18-07, 09:33 AM	#1
Uber Gruber Stowaway Posts: n/a Downloads: Uploads:	@werner Thats a good point. Just curious though, if the second target was heading in the opposite direction then wouldn't setting the AOB before the second range/bearing mark help the PK to judge better..if it was previously set for the first target ? Actually, now I think about it, it probably doesn't take AOB into consideration at this stage.

07-18-07, 10:42 AM	#2
WernerSobe Commodore Join Date: Jul 2006 Posts: 625 Downloads: 5 Uploads: 0	It doesnt matter how bad the solution is until you fire the fish. And you can correct the sollution at any time. So leaving the position keeper turning even with wrong data will not screw your firing solution that you have not set up yet. So let the position keeper going, and put the new dataset one by one. Just make sure you resend the range last because it also sends the bearing. You want the position keeper to start calculations with the right bearing right?

07-18-07, 01:25 PM	#3
Powerthighs Beach Leaf Join Date: Apr 2007 Location: Seattle, WA Posts: 287 Downloads: 11 Uploads: 0	Correct that you don't have to reset it. I usually leave the TDC on for the entire patrol. Once you have speed and AOB set correctly, one last range/bearing input will ensure the PK is tracking accurately. If you ever change speed or AOB you need to do another range/bearing input. All that matters is that the PK is correct by the time you shoot. Inaccuracies while setting up a solution don't matter. [EDIT] I basically seconded what Werner said above.

07-18-07, 01:34 PM	#4
Powerthighs Beach Leaf Join Date: Apr 2007 Location: Seattle, WA Posts: 287 Downloads: 11 Uploads: 0	Another way to look at it is range/bearing tells the PK where the target is now. Speed and AOB tell the PK how the target will move in the future. Once you have Speed and AOB set correctly (the ability to know future movement), one last range/bearing input (the current positition) will make the PK solution accurate, regardless of how much it was wrong due to previous activity or previous targets.