[WIP] Airborne Magnetic Anomaly Detector (MAD)

[keltos01]

basing sensor on OM 720 MAD sensor thanks to Lurker_lhb

The instrument had an effective range of 150 meters under average conditions and 250 meters under ideal conditions. The best height for an aircraft employing MAD was considered to be 10 to 50 meters depending on pilot's skill

2 set should be done : one US and one IJN following the spec here above but how do you set how deep the sensor sees ?

keltos

[keltos01]

Magnetic anomaly detectors employed to detect submarines during World War II harnessed the fluxgate magnetometer, an inexpensive and easy to use technology developed in the 1930s by Victor Vacquier of Gulf Oil for finding ore deposits.[2][3] MAD gear was used by both Japanese and U.S. anti-submarine forces, either towed by ship or mounted in aircraft to detect shallow submerged enemy submarines. The Japanese called the technology jikitanchiki(磁気探知機, "Magnetic Detector"). After the war, the U.S. Navy continued to develop MAD gear as a parallel development with sonar detection technologies.


http://en.wikipedia.org/wiki/Magnetic_anomaly_detector

keltos

[Bubblehead1980]

Originally Posted by keltos01

should we tell Ducimus ?

haha i think you should

[Ducimus]

Originally Posted by keltos01

how do you set how deep the sensor sees ?

keltos

That is the "fun" part, and its alot of trial and error. You really can't do this in a single mission. What i did was play a career game until i got a plane contact in just the right conditions. Saved that game. Exited SH4, made my adjustments, and then reloaded that saved game to gauge the effects. (you can edit the AI_sensors.dat file while on patrol so long as its minor variables)

This 7 page thread may be of help. It's basically the evolution of my "evil airplanes" .
http://www.subsim.com/radioroom/showthread.php?t=124138

[keltos01]

Originally Posted by Ducimus

That is the "fun" part, and its alot of trial and error. You really can't do this in a single mission. What i did was play a career game until i got a plane contact in just the right conditions. Saved that game. Exited SH4, made my adjustments, and then reloaded that saved game to gauge the effects. (you can edit the AI_sensors.dat file while on patrol so long as its minor variables)

This 7 page thread may be of help. It's basically the evolution of my "evil airplanes" .
http://www.subsim.com/radioroom/showthread.php?t=124138

Thanks !

keltos

[keltos01]

how do you add the MAD visual node to a plane ?



tried the MAD PBY mission at PD : they passed over me not noticing me...

keltos

[Ducimus]

Originally Posted by keltos01

how do you add the MAD visual node to a plane ?

keltos

Smoke and mirrors!

First, lets establish one thing. Underwater detection by an airplane is nothing short of a hack. Your making the game do something it was never designed to do. So it won't be perfect. Thankfully it works well enough to be feasible.

Now then, what your going to have to do is make several new visual sensor nodes (easy with S3D), each with their own characteristics. (happy testing there, let me tell ya!). One "normal" visual sensor, and another with a negative surface factor to detect submerged, and maybe another with an even more negative surface factor.

To the best of my knowledge, an AI unit can have only one visual sensor at a time. So then, like radar or sonar improvements in a ship or plane SNS file, so you do the same with the visual sensor.

edit:
Another idea is to clone (by 3d model inheirtance) a plane, so you have two instances of the same plane. One with the super negative visual factor, the other without. Place them both in your airbase.cfg files and let them randomly spawn.

[tater]

Yep.

Ducimus, it's been a while since that thread. Do underwater sensors need to be underwater? Ie: if you put a sonar on a ship, and the node is above the water, does it work?

If underwater detectors must be under water, then make a new active sensor, and place the node for it 25m, or whatever the desired max altitude for the MAD equipped plane is. Then if the planes are flying above that alt, it won't work, and if they are low enough, the sonar is dipped. Assuming they need to be below water level.

If they work above, then you need to design the other aspects of the active sonar such that it works. Course if they only ping after they detect otherwise, that won't work.

The other issue with using a visual sensor is night time and weather.

Of course ww2 aircraft would not have operated in bad weather anyway, but MAD planes did work at night.

[Ducimus]

Originally Posted by tater

Yep.
Do underwater sensors need to be underwater? Ie: if you put a sonar on a ship, and the node is above the water, does it work?

I dunno, i never tried that. Worthy of an experiment i suppose.

[peabody]

Ducimus and tater,

I read your old thread and got it working. I know it's hit or miss, I prefer miss, but Keltos likes to blow himself up. Still doing some testing, they engage most of the time.
Thanks for your help.

Peabody

[Ducimus]

Originally Posted by peabody

Ducimus and tater,

I read your old thread and got it working. I know it's hit or miss, I prefer miss, but Keltos likes to blow himself up. Still doing some testing, they engage most of the time.
Thanks for your help.

Peabody

Cool. It's alot to remember and hard to explain. It's was far easier to find the old thread and let it do some of the explaining.

[cgjimeneza]

Holy Crap

MAD on planes and fidos or maybe DCs... keltos and Ducimus are gona have our behinds!!!!



this is something to be very afraid........... cant wait to try it

[keltos01]

Peabody made it work !

now we need them to drop a dye or a smoke marker on the first pass then attack...


"submerged contact bearing 299 Sir ! "

"stand by for DC release"



keltos

[Jan Kyster]

That's it!

MsHearts, here I come!

[keltos01]

I read someplace that they also had towed MAD arrays on ships

MAD gear was used by both Japanese and U.S. anti-submarine forces, either towed by ship or mounted in aircraft to detect shallow submerged enemy submarines.

http://en.wikipedia.org/wiki/Magnetic_anomaly_detector

keltos