MinElevation - MaxElevation

[Txema]

When I examine the "AI_Sensors.dat" file I can see that it specifies the features of the sonar and hydrophones used by the AI ships.

Specifically it includes the "MinElevation" and "MaxElevation" parameters for the sonars and hydrophones.

In the case of the "AI_Sonar" it can be seen:

MinElevation = 90
MaxElevation = 100

And in the case of the "AI_Hydrophone" it can be seen:

MinElevation = 80
MaxElevation = 170


What do these parameters mean? Do they define the arc covered by the sensor (in degrees)?

Does 0 degrees correspond to the vertical direction, pointing upwards? Then, does 90 degrees correspond to the horizontal direction (sea surface)? If so, why the MinElevation of the Hydrophone is 80 degrees?... This would mean that the MinElevation of the Hydrophone would be avobe the sea surface...

Thank you very much for your help !!!!

Txema

[timetraveller]

Hi Txema,

I would think that 0 degrees is probably the vertical. Then, 90 degrees would be straight out at water surface level from where the water intersects the ship's bow line. From what I've read, hydrophones were located on the underside of the ship, so it's plausable that they might have 10 degrees upward arc sensitivity. I'm sure someone better in the know will correct me here if this is not so.

The sonar beam seems a little narrow though (10 degrees). Maybe 45 degrees would be closer to real. However, the game devs might have set it that way for playability??

Good questions you present.

TT

[Redwine]

Hi Txema,

I would think that 0 degrees is probably the vertical. Then, 90 degrees would be straight out at water surface level from where the water intersects the ship's bow line. From what I've read, hydrophones were located on the underside of the ship, so it's plausable that they might have 10 degrees upward arc sensitivity. I'm sure someone better in the know will correct me here if this is not so.

The sonar beam seems a little narrow though (10 degrees). Maybe 45 degrees would be closer to real. However, the game devs might have set it that way for playability??

Good questions you present.

TT


Whoow ! :88) I think so it finally explains why they can detect my full turns even when they are just over my stern like as if they have a video camera under keel.

Based on your explanation, 80 is due the sensor is underkeel, then if we put min 90 they can not sense a movil on surface.

But 80 is too much i think so, the kell will be an obstacle for reception of signal, may be a valur of min 87 or 88 may be more realistic.

And the value of 170 may be the responsible of the "underkeel video camera", they can hear me when they are 10 degrees rear me, may be a 135 is a more realistic value, or if not, almost can produce a more realistic behavior. :hmm:

I think so it will take a good time for the sonar opearator to detect a change in the target course, specially if it is just under him. :hmm:

In game this detection, and inform to control room, and it to rudder contrl, and make the turn is instantaneously...... :damn:

What do you think ? :hmm:

Thanks in advance.... Red. :up:

[timetraveller]

Hi Redwine,

Good to see you again. What you suggest sounds good. Again, my ideas on the min and max elevation are "guesswork" on my part.

Good luck.

TT

[gouldjg]

See Red your getting into it now (I doubt you ever got rid of that niggle though).

I sent a reply to what I was playing with and with your new knowledge on elevation, you may be the man to solve this more factually than I can.

Keep us informed and I will do the same for you :up:

This has been a game killer of mine for a long time.

If this is solved, I can then proceed to lowering everything so that Uboat can be instant death in a ramming incident.

Setting no armour on sub and sub systems, makes it possible for the gradual tapping down effect from DC's with lower power settings.

[Pdubya]

Guys, I believe Jungman has the answer to your questions. He is the author of the original Sensors.dat mod and knows quite a bit about the parameters.

You might also try the search function if all else fails.

[Redwine]

Timetraveller :

I was looking in the traslator what is "guesswork" :P ......
Understand, but your explanation sounds good. :up:

Gouldjg :

I am fighting now with overtemperature or some thing related to it now. I am having extrage glitches when my GPU reaches hight temperatures, and only in SH3.

But as soon as i have time i will start up test on those values.

[timetraveller]

Timetraveller :

I was looking in the traslator what is "guesswork" :P ......

hehe I was "guessing" for my theory.

TT

[Jungman]

Elevation is actually the amount of 'detection' added to detecting you. It should be called Alert Level rise. :hmm:

It is different for all 7 pairs of passive and active enemy sonars. It values change quite a bit.

'Elevation' is being used in the sense of 'Alert level Increase to Detect You' upon a detection event. :hmm:

I think. :shifty:

I never noticed any change to angle of detection or depth mesing around with it. Of course I could be wrong. Not 100% sure myself.

Type 147A Sword active sonar has 90 (horizontal) to 155 (45 degree angle below water). So you can be correct.

The hydrophone and all is limited to -10m so if 80 degrees is above water, it wil not matter. I am not sure if it even works in the game as stated.

The old active sonar were the 'searchlight beams' limited to about a 10 degree arc. 90 to 100. That is horizontal to 10 dip angle below water line.

Test it and discover what it the truth?

[Redwine]

Jungmann , Gouldjg, Timetrveller.....

Can you give a list of wich is the function of each device ?

in example as you mentioned :

Type 147a >>> Active sonar.

I need to identify wich one is radar, wich one is active or pasive sonar.

Or there is a place where to take they caracteristics, in example if they was a beam type ?

I made changes into Hydrophones and Sonar but no change in Ubber DDs behavioer, i think so it is needed to change the other devices.

Thanks a lot.

[timetraveller]

Jungmann , Gouldjg, Timetrveller.....

Can you give a list of wich is the function of each device ?

in example as you mentioned :

Type 147a >>> Active sonar.

I need to identify wich one is radar, wich one is active or pasive sonar.

Someone else will have to answer this one. I don't have the answer....

TT

[Txema]

Can you give a list of wich is the function of each device ?

in example as you mentioned :

Type 147a >>> Active sonar.

I need to identify wich one is radar, wich one is active or pasive sonar.


I think the equipment with names finishing with the letter "P" are passive equipment, i.e. hydrophones.

The equipment with names finishing with the letter "A" are active equipment, i.e. ASDIC (or Sonar).

The equipment with the "ASV***" names are airborne Radar.

And the equipment with the "Type2**" name are shipborne Radars.


Txema

P.S. Thanks for your help !!!!

[Redwine]

Can you give a list of wich is the function of each device ?

in example as you mentioned :

Type 147a >>> Active sonar.

I need to identify wich one is radar, wich one is active or pasive sonar.


I think the equipment with names finishing with the letter "P" are passive equipment, i.e. hydrophones.

The equipment with names finishing with the letter "A" are active equipment, i.e. ASDIC (or Sonar).

The equipment with the "ASV***" names are airborne Radar.

And the equipment with the "Type2**" name are shipborne Radars.


Txema

P.S. Thanks for your help !!!!



Thanks for help Txema..... i will take a look.

[Jungman]

correct. as you post.

confusing somewhat.

Type 286, 290, 271, 272, 273,276,277,268 Destroyers radars

Big Military Ships SS, SP, SG, SF, SC radars ex. aircraft carrier, Battleship

Airplanes, ASV* radars ex. ASVII

anything ending in "P" is passive hydrophones. ex. 123P

anything ending in "A" is active sonar. ex. 123A

some odd balls used upon German friendly airplane and destoyer FuMo21, FuMo23, FuG200

[Pdubya]

What'd I tell ya hmm? :P

Seriously, it would be more than great if "the collective" (should that be in caps? :hmm: ) could figure out the sensors once and for all. You guys are doing an outstanding job so far... :sunny:

[timetraveller]

Yes, THE COLLECTIVE
http://img437.imageshack.us/img437/69/collective0ei.jpg

[gouldjg]

I feel the DD should be in that league.

Evasion is futile,

You will be assimulated with my DC.