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12-21-2006, 08:31 PM
The ALQ-94 passive detection system on the F-22 can detect and locate an enemy at a range 250 to 288 miles -03/17/ AW&ST.
The F-22's passive cover is approximately 360° and on all bands -Jed article 07/01/00. A quote later from the same article, "The system uses techniques such as cued tracking: since the track file, updated by the ALR-94, can tell the radar where to look, it can detect and track the target with a very narrow beam, measuring as little as 2° by 2° in azimuth and elevation."
Other periodicals have stated the data from the passive system is so accurate a AMRAAM (Slammer) Missile can be targeted by the usage of passive detection only.
BASICALLY, The ALR-94 system will see an enemy aircraft's RADAR emissions, and will be able to not only lock on to that transmission, but accurately guide an AMRAAM to that position, all without ever using it's RADAR.
The F-22's passive cover is approximately 360° and on all bands -Jed article 07/01/00. A quote later from the same article, "The system uses techniques such as cued tracking: since the track file, updated by the ALR-94, can tell the radar where to look, it can detect and track the target with a very narrow beam, measuring as little as 2° by 2° in azimuth and elevation."
Other periodicals have stated the data from the passive system is so accurate a AMRAAM (Slammer) Missile can be targeted by the usage of passive detection only.
BASICALLY, The ALR-94 system will see an enemy aircraft's RADAR emissions, and will be able to not only lock on to that transmission, but accurately guide an AMRAAM to that position, all without ever using it's RADAR.