Yes... was "solved/fixed"... if you can live with the SD radar catching surface ships...
I made one in that way...
Ducimus made another one... but he follow a diferent way, not sure at all, may be you can ask him, but he nuled the SD radar and install radar on planes, and a radar warning into subs, but do not take this as true, just ask him.
You can download the Ducimus fix into his Trigger Maru mod...
http://www.subsim.com/radioroom/showthread.php?t=115258
Not know if he has a stand alone version...
You can download a fix i made in my page...
http://hosted.filefront.com/Redwine
http://files.filefront.com/Radar+Fix.../fileinfo.html
It is included into the "Die Slowly Stage 14 Mod" too.....
With both, you will detect ships and planes disregarding your heading...
Credits for all people discusing and helping on the related topics....
