tohoku
Posts: 415
Joined: 3/18/2002 From: at lunch, thanks. Status: offline
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[QUOTE]Originally posted by Tomanbeg Originally posted by tohoku It could not see through smoke, and certainly not through vehicle-generated smoke (as the Russians did with sprayed oil/fuel over the exhausts). Even modern systems have almost no ability to see through vehicle-generated smoke. [/QUOTE] [QUOTE] Maybe yours can't, but the Abrams can. so can the FLir's mounted on AH's. I think it is called "Raliegh scaterring" [/QUOTE] Putting aside your interesting description of what IR is, the fact remains that even modern systems have trouble with smoke that contains hot particulate matter. Sure, vehicle smoke not be terribly effective, but it was just an example from the period people were talking about. Quite a few vehicles are equipped (it's not like it's hard to build!) with smoke launchers these days that generate smoke that is very difficult if not impossible to see through, thermal sensors or no. They do this by containing material that burns at variable rates for the duration of the smoke itself: present a cloud of material burning at different rates and most sensors have trouble. The WW2 Uhu system certainly couldn't have coped. In order to see through this sort of smoke you need a *very* hot heat source on the other side in order to pick out - an Abrams is actually easier to see through smokes than many other types of vehicle simple because of the *huge* and intense heat signature it has. More interestingly, a lot of the new smokes system are also using prismatic particals in order to defeat laser ranger - you might be able to see something well enough through smoke to shoot at it, but you still won't be able to range on it accurately. Vehicle-generated smoke also coincidentaly has the same effect, although, again, it's a bit random in effect. It's entirely possible to build a system that *will* see through almost any smoke or obscuration (look at the British system for photomapping through cloud for a related example!), but the problem is building one that can deal with the processing involved in real time. Modern systems do a better job than in the past, but they're not invincible, no matter how often you believe the advertising, T. tohoku YMMV
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