posted on May, 6 2005 @ 09:47 PM
Not sure about naval surface ship attempts to jam radar but I do know a little about airborne radar jamming techniques. Chaff was referred to in WWII
as "WINDOW" and was first used in July 1943 during an RAF night raid on Hamburg, Germany. Basically the chaff was strips of aluminum foil that they
cut in widths to match a specific ratio of the German radar's wavelength.
Also, the US Navy experimented in making anti-sub aircraft virtually invisible at altitude by installing several arrays of lights on all surfaces of
the wings, fuselage, etc. By measuring the amount of apparent light surrounding the craft, these lights would then be turned on and adjusted to make
the craft nearly invisible while at altitude. I even saw some old Navy footage of a demonstration that was pretty convincing. I'm pretty I saw this
on the old Discovery Channel "Wings" series. The US Navy project was called "Yehudi" that started in 1943 as a way for anti-submarine aircraft to
be able to "sneak up" on surfaced submarines at sea.