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Charos · 04-01-07, 07:30 AM

A very interesting and excellent document on SAR missions and POD

http://www.uscg.mil/hq/g-o/g-opr/nsa...hodsReview.pdf

"Consider an omnidirectional sensor that is "perfect" (i.e. 100% effective) within some definite range and completely ineffective beyond that range. That is, detection is guaranteed for any object the sensor approaches more closely than the definite detection range, and the sensor never detects any object beyond that range. This idea is analogous to setting a lawn mower’s blade to a height of zero and then pushing it into tall grass. The lawn mower would leave behind it a swath of bare earth having a definite width (twice the definite detection range), while blades of grass outside this width would be untouched. Inserting this particular sensor into the previous description, it is easily seen that in this special case (and this special case alone), the sweep width is literally the width of the swept area where the detections took place, i.e. twice the definite detection range."

This is analagous to how SH4 appears to be doing ASW duty IE: with a POD of 100% with a detection range of 10Km or a sweep width of 20Km.

As the quote says (Consider an omnidirectional sensor that is "perfect" i.e. 100% effective).

So the ASW in SH4 is too good to be realistic its actually utopian.

When I get home I will try the following:

#1 Change daytime value from 1 IE 100% to 50% which is much more realistic for a visual sighting over 20Km sweep width during the day.

#2 Change Night time to say 15% which should provide a night time modifier of (0.5*0.15=0.075) OR 7.5% chance to find a sub in the dark within a 20Km sweep width or diameter as is the case here.

Without Radar most WW2 night time ASW patrols would have been more nuisance value to force subs under and hurt them operationally without actually making contact. We cant simulate that here because when your crew spots the Enemy AC its already been computed to spotting you and is already on an attack run.

That wasnt a problem when you could dive in 30 Seconds in SH3 but now it is.

04-01-07, 07:30 AM	#15
Charos Helmsman Join Date: Jan 2005 Location: Sydney, Australia Posts: 109 Downloads: 31 Uploads: 0	A very interesting and excellent document on SAR missions and POD http://www.uscg.mil/hq/g-o/g-opr/nsa...hodsReview.pdf "Consider an omnidirectional sensor that is "perfect" (i.e. 100% effective) within some definite range and completely ineffective beyond that range. That is, detection is guaranteed for any object the sensor approaches more closely than the definite detection range, and the sensor never detects any object beyond that range. This idea is analogous to setting a lawn mower’s blade to a height of zero and then pushing it into tall grass. The lawn mower would leave behind it a swath of bare earth having a definite width (twice the definite detection range), while blades of grass outside this width would be untouched. Inserting this particular sensor into the previous description, it is easily seen that in this special case (and this special case alone), the sweep width is literally the width of the swept area where the detections took place, i.e. twice the definite detection range." This is analagous to how SH4 appears to be doing ASW duty IE: with a POD of 100% with a detection range of 10Km or a sweep width of 20Km. As the quote says (Consider an omnidirectional sensor that is "perfect" i.e. 100% effective). So the ASW in SH4 is too good to be realistic its actually utopian. When I get home I will try the following: #1 Change daytime value from 1 IE 100% to 50% which is much more realistic for a visual sighting over 20Km sweep width during the day. #2 Change Night time to say 15% which should provide a night time modifier of (0.50.15=0.075) OR 7.5% chance to find a sub in the dark within a 20Km sweep width or diameter as is the case here. Without Radar most WW2 night time ASW patrols would have been more nuisance value to force subs under and hurt them operationally without actually making contact. We cant simulate that here because when your crew spots the Enemy AC its already been computed to spotting you and is already on an attack run. That wasnt a problem when you could dive in 30 Seconds in SH3 but now it is. Last edited by Charos; 04-01-07 at 07:45 AM.*