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-   -   Target speed estimation (https://www.subsim.com/radioroom/showthread.php?t=163943)

sdflyer 03-08-10 05:25 PM
Target speed estimation
 
What is the best way to estimate a target speed using manual TDC?
Are there formulas based on target's bearing change, distance and time?

Thanks!

sdflyer 03-09-10 01:02 AM
bump

Capt.Warner 03-09-10 01:04 AM
http://www.subsim.com/radioroom/showthread.php?t=163971

Nuff Said.:)

kylania 03-09-10 02:21 AM
  1. Open your stopwatch
  2. Mark the current position of a contact as close as you can
  3. Start the stopwatch, after 3 minutes and 15 seconds...
  4. Mark the current position of the contact as close as you can
  5. Measure the distance between the two marks. Divide by 100 to get the speed in knots.

So if the distance was 800m they are traveling 8kts. If it was 1100m they are traveling 11kts

Step 1 & 2 & 3:

http://img341.imageshack.us/img341/6871/step1m.jpg

Step 4:

http://img251.imageshack.us/img251/5585/step2x.jpg

Step 5:

http://img411.imageshack.us/img411/5148/step3q.jpg

For Imperial users (huh??) only measure for 3 minutes.


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