Bobby. wrote on Feb 26
th, 2014 at 10:45am:
This conversation has obviously been going on for a long time ................. I just thought I might make an entry with a question.
Concerning the YouTube video entitled, "RUSSIAN RADAR CAN NOW SEE F-22 AND F-35 Says top US Aircraft designer," surely you know what kind of radar can see F-22s and F-35s that the Russians have made?
Based on what I've read, it's most likely to be VHF radars, and you probably know that while VHF radars can detect stealth aircraft, they can't accurately determine their location.
VHF radars have always been able to detect fighter aircraft (even way back in the 1940s and '50s) and that's because fighters have structural features whose size are comparable to or smaller than VHF wavelengths. Objects whose size are comparable to VHF wavelengths can be lit up like mirrors through a phenomenon called half-wave resonance. Stealth fighters will never be invisible to VHF radars.
That's great if you just want to detect fighters, but it's not so useful if you want to shoot them down. VHF radars don't provide accurate targeting information. To shoot down fighters, you have to be able to not just "detect" them, but also "track" them.
On the one hand you have stealth fighters that are still detectable, and VHF radars that can detect but not track them. Each technology can be augmented (and also defeated).
VHF radars may not be able to provide accurate targeting information to surface-to-air missiles, but this information can be passed on to other radars operating in different bands (as part of an integrated air defence system) so these radars can be "cued" to search in those parts of the airspace to obtain better targeting information. Information gathered by VHF radars can also be used to decide where to send your fighters to shoot down the intruding stealth fighters (and possibly engage them within visual range).
Although the VHF radars don't provide accurate targeting information and the F-22s may prevent radars in other bands from tracking them, you may not need it. Just fire a few missiles in the direction of the F-22, continually update the F-22's approximate location, and when it gets close enough, the F-22 will be visible to the missile's sensors (whether it's radar-seeking or infrared-seeking).
There are, however, a number of ways you could defeat VHF radars and save your stealth fighters, like jamming and decoys. You could have a Growler "shadowing" the F-35 or F-22 from a safe distance. The VHF receiver could be bombarded with noise and false signals, so that it wouldn't be able to determine the precise location of the F-35/F-22. You could even jam the data link cuing missiles coming toward you. The Next Generation Jammer may make Growlers redundant, so F-35s can go in without special jamming support. You'd have stealth and jamming in the same fighter.
MALDs (Miniature Air-Launched Decoy) can make the enemy think there are more fighters in an area than there actually are and cause them to waste ammunition. They emit a fake radar and infrared signature that looks like a fighter. It's an additional countermeasure on top of chaff and flare. They wouldn't know it was a decoy until they were within visual range!!
Finally, a B-2 Spirit could be used to destroy these annoying VHF radars, due to the fact that the B-2 is actually stealthy in the VHF part of the spectrum. It's large enough to not be vulnerable to half-wave resonance in the VHF band(s). Once these VHF radars are gone, the enemy is going to have a tough time locating your stealth fighters.