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Not to sound like an F-22 cheerleader but I thought this was interesting. . .



 
 
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  #31  
Old May 23rd 04, 05:49 AM
Denyav
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That's the joy of F-22 (and -23)--the interceptor dies long before
he/she ever gets within a range that would allow their radar to detect
the small RCS. You simply cruise along, passively detecting the enemy
and plinking them at your leisure. No sweating, grunting, groaning,


Is F22 (jurassicfighter) is a Bomber?
  #32  
Old May 23rd 04, 06:00 AM
Denyav
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Active homers also need the return to bounce straight back toward them
too. The very thing stealth is designed to defeat.


Quite so,stealth reduces backscatterers very significantly but cannot totally
eliminate it.
If you can guide an active homer close enough to your target using multistatic
tracking data,it will start receiving its own bacscatter .Figthers don't have
multistatic radars. Long range missiles cost big

$$$. If the need came up (meaning if hell froze over and we actually
saw any of these systems in service) we could just slap a small
turbojet on the SDB and be back in business.


Thats correct but air force tries to develop an UCAV based system.

  #33  
Old May 23rd 04, 06:07 AM
Denyav
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One of the big ugly problems with multistatics is that they're *really*
vulnerable to wideband jamming. Put up a half-dozen very low power
jammers in their line of sight, and they're screwed.


Thats partly true,if you process and analyse polarimetric data forward
scatterer contains you can even find out type of material that reflected this
signal.
(Thats the advantage of german design)
  #35  
Old May 23rd 04, 05:29 PM
Denyav
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The joy of stealth, you wake up dead never
knowing that there was an attack on the way. You don't die all tensed
up.


Joy of multi statics is also very similar,they track stealth platforms,but they
dont even know that before its too late.
  #37  
Old May 24th 04, 05:04 AM
Denyav
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It's sounding more and more like those Cold War claims of Amazing
Russian Wonder Weapons that would destroy the West with no trouble at
all.


With a small difference,Made in USA and other western countries.
For the introduction of really "amazing" weapons we all need to wait till next
decade.
  #38  
Old May 24th 04, 10:44 PM
Scott Ferrin
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You are approaching to the problem from the opposite direction,to solve the
problems you described correctly you have to install receiver/processor unit of
multistatic system inside every SAM,which is currently technologically and more
importantly financially not feasible.
But solution is very cheap,though not so excellent like turning SAM missiles
into multistatic processors.
1)Multi statics can track stealth platform at extremely long ranges.
2)Stealth platforms designed to reduce backscatter.They reduce backscatter
significantly but total elimination of bacscatter is not possible.(Thats the
reason why a particular backscatter radar detects conventional aircraft at 100
m but identical sized stealth aircraft only at 5 or 10 miles)
If your radar receiver comes close enough to stealth target (or target comes
close to bacscatter receiver) at some point backscatterer receiver will start
receiving backscatterers from target.

So,
1)You are tracking your target precisely using multistatics (You might not even
need very precise tracking using multistatics (expensive),If you use the
methods used by Serbians,you can detect stealth ,but you cannot track it.(your
SAM crews must be lighting fast)

2)If you want to use an semi active system ,turn on guidance radar and aim it
according to multistatic radar tracking data.
(or if you use serbian style interconnected bacscatterers to the latest known
position position )



Do you know what "semiactive" is/means?






3)Fire missiles guide them to target by command guidance



Command guidance? I'll bet a HARM would just LOVE that.



,as missile nears to
the target missiles own backscatter receiver will be able to receive
backscatter signals (not forward scatterers used by multistatics) from its own
guidance radar.



An active radar seeker on a AAM likely wouldn't work very well against
stealh. You'd be better off with an IIR seeker.





If you can use an active homer skip step2 and use missiles active seeker as
terminal guidance only.



A high frequency radar against a stealth aircraft?

 




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