Can we get more accurate bearing error between Position Keeper and Periscope

wdq4587 · 07-23-08, 05:14 AM

What I mean is the read ability of the difference between Position Keeper predicted target bearing and the Periscope watched target bearing. I guess we can not hope use a device directly display the bearing error value. So if there are any way to show 2 bearing more precision by display on a concentric circle, or using text display side by side.

Also what I want ask is the range error althought not as important as bearing error in SH4 for we can get it by instantaneous memory (some difficult).

Without the high precision way to get the bearing error, we can not got the max advantage of the Position Keeper. I guess in real submarine, they at least can get a 0.5 degree precision. But in SH4 we need wait too much time to see the bearing error than in real war.

Rockin Robbins · 07-23-08, 11:27 AM

I don't understand the basis for your question. If you go to the attack map, you can see the target position indicated. If the TDC has a valid solution you can also see the projected impact point plotted as well. The distance between them is your error. Analyzing the change in the error over time you can derive whether the error is the result of a bad range, bad target course, a bad bearing, or wrong speed input.

All the information to answer "should I shoot now?" and "if not, what do I need to fix to be able to shoot?" is right there in vastly more detail than a bearing error readout, which can only tell you "shoot/don't shoot."

wdq4587 · 07-23-08, 08:37 PM

Since I am not in home, I can not check the attack map now. But I guess I can not see the target position indicated (for have turned it off) and that's not the way I said below.

The power of the Position Keeper is not only it keeps change the AOB (just like German TDC) and Range (German TDC can't) in TDC input so you will get better parameters if you shoot delay a period after you setting parameters.

The power of the Position Keeper is you can estimate Speed, AOB and range and input them in Position Keeper. Then the Position Keeper will simulate a virtual target (defined by your input) movement. If you found that the Position Keeper output (target bearing and range) are different with your real measurement, then you know your paramters is wrong, and the values of bearing error and the range error will show you how to correct your estimate parameters. And then you can input these new fixed parameters to the Position Keeper again. By repeat 2 or 3 such steps, you can get a very precision shoot parameters even without exactly know the target dimension first. And you can also do this while submarine in movement without reduce precision.

That's the big advantage US marine TDC over German and Japanese TDC. But in SH4, the device is so small so I can not see the minor bearing error until it changes to big. But wait this big bearing error cause wait too much time and so we don't have enough time to do such step 2 or 3 times. That's the problem what I say.

In some TDC, the Position Keeper has the Bearing Error output display directly, but I don't know it's in WW2 of after WW2. See this:
http://www.vfleetcn.org/bbs/UploadFi...0482318048.jpg

07-23-08, 05:14 AM	#1
wdq4587 A-ganger Join Date: Sep 2005 Posts: 71 Downloads: 10 Uploads: 0	Can we get more accurate bearing error between Position Keeper and Periscope What I mean is the read ability of the difference between Position Keeper predicted target bearing and the Periscope watched target bearing. I guess we can not hope use a device directly display the bearing error value. So if there are any way to show 2 bearing more precision by display on a concentric circle, or using text display side by side. Also what I want ask is the range error althought not as important as bearing error in SH4 for we can get it by instantaneous memory (some difficult). Without the high precision way to get the bearing error, we can not got the max advantage of the Position Keeper. I guess in real submarine, they at least can get a 0.5 degree precision. But in SH4 we need wait too much time to see the bearing error than in real war.

07-23-08, 11:27 AM	#2
Rockin Robbins Navy Seal Join Date: Mar 2007 Location: DeLand, FL Posts: 8,900 Downloads: 135 Uploads: 52	I don't understand the basis for your question. If you go to the attack map, you can see the target position indicated. If the TDC has a valid solution you can also see the projected impact point plotted as well. The distance between them is your error. Analyzing the change in the error over time you can derive whether the error is the result of a bad range, bad target course, a bad bearing, or wrong speed input. All the information to answer "should I shoot now?" and "if not, what do I need to fix to be able to shoot?" is right there in vastly more detail than a bearing error readout, which can only tell you "shoot/don't shoot." __________________ Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS

07-23-08, 08:37 PM	#3
wdq4587 A-ganger Join Date: Sep 2005 Posts: 71 Downloads: 10 Uploads: 0	Since I am not in home, I can not check the attack map now. But I guess I can not see the target position indicated (for have turned it off) and that's not the way I said below. The power of the Position Keeper is not only it keeps change the AOB (just like German TDC) and Range (German TDC can't) in TDC input so you will get better parameters if you shoot delay a period after you setting parameters. The power of the Position Keeper is you can estimate Speed, AOB and range and input them in Position Keeper. Then the Position Keeper will simulate a virtual target (defined by your input) movement. If you found that the Position Keeper output (target bearing and range) are different with your real measurement, then you know your paramters is wrong, and the values of bearing error and the range error will show you how to correct your estimate parameters. And then you can input these new fixed parameters to the Position Keeper again. By repeat 2 or 3 such steps, you can get a very precision shoot parameters even without exactly know the target dimension first. And you can also do this while submarine in movement without reduce precision. That's the big advantage US marine TDC over German and Japanese TDC. But in SH4, the device is so small so I can not see the minor bearing error until it changes to big. But wait this big bearing error cause wait too much time and so we don't have enough time to do such step 2 or 3 times. That's the problem what I say. In some TDC, the Position Keeper has the Bearing Error output display directly, but I don't know it's in WW2 of after WW2. See this: http://www.vfleetcn.org/bbs/UploadFi...0482318048.jpg