The truth Behind the Downed F117 over Kosovo

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The truth Behind the Downed F117 over Kosovo

Post  Kansiov on Fri Oct 12, 2007 7:18 am

An F117 state of the art stealth bomber was shot down over Kosovo in stealth mode. It sent shockwaves over the American high command, how in the world can their stealth technology be beaten? The answer lies in the Serbian Radar Defense systems, and yes they confirmed that a F117 was deceted by an enemy radar in stealth mode and shot down.
Here are the specs:

Low Frequency Radar:

One example of a low frequency anti-stealth radar is the Russian 55Zh6.1, which is a ground-based, 1-meter wave, circular scanner. This low-freq radar can detect early generation stealth technology aircraft with "detect" being the key word.

With long wave / low freq radar there are 2 major points that should be brought up:

1. Detecting the presence of a stealthy air vehicle and accurately tracking it for a fire control computer are 2 very different things, as tracking and lock-up only occur using higher freq radar.

2. There is a lot of noise in these lower frequencies and it is very difficult to detect beyond a few miles.


Passive Radar & PCL (Passive Coherent Location) Systems:

The Ukranian Topaz "Kolchuga", the Czech "Kopac", "Ramona" and "Tamara MCS-93" systems as well as the Russian "VERA-E" and "BORAP" systems are all examples of "passive radar" which isn't really a radar at all but a listening device.
These systems listen for electronic signals generated by passing aircraft. It is important to also note that the Russian military considers the "Kolchuga", "Kopac", "Ramona" and "Tamara" out of date systems, the VERA system is something you will want to pay attention to in the future.

Systems such as the UK's Celldar and Lockheed's Silent Sentry are good examples of PCL technology. Celldar as the name implies uses cell phone frequencies to detect aircraft and Silent Sentry uses broadcast television and FM radio frequencies. China and Russia have both been working on similar systems.
The frequencies monitored in these systems are relatively low (long wavelengths) and can theoretically detect stealthy air vehicles but again there are issues with actually tracking the target for a fire control unit.

Multi-Static Radar:
These systems have one transmitter and 2 or more receivers located in different locations, this can defeat stealth based on structural design (shape). The premise behind RAS (Radar absorbent structure) is that the radar signals are deflected in directions other than back to the source. The multi-static radar systems have recievers placed in carefully calculated locations in order to pick up the signals that are reflected away from the source.
It bears mentioning that the more effective Passive and PCL systems are bistatic or multistatic systems, in that they have multiple listening points.

Also note that Serbia had their Radar suppliedfrom the East so it is likely they could have gotten at least on of those.

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Re: The truth Behind the Downed F117 over Kosovo

Post  Kansiov on Fri Oct 12, 2007 7:23 am

I found some pics of Russian low band radar or low frequency radars that can decet early generation of American stealth Technology.

55Zh6-1 Nebo UYe / Tall Rack 3-Dimensional Surveillance Radar


1L13-3 Nebo SV/SVU 2-Dimensional Surveillance Radar


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Re: The truth Behind the Downed F117 over Kosovo

Post  Uberwarz on Wed Oct 17, 2007 7:44 am

I think it was clear luck that they hit the F-117
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Re: The truth Behind the Downed F117 over Kosovo

Post  OptimusGonzo on Wed Oct 17, 2007 3:13 pm

maybe maybe not. Luck or chance always plays into things somewhat, but clearly by the information we know the Serbs had an excellent strategy of decreasing whats left to chance and shifting the luck in their favor.
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Re: The truth Behind the Downed F117 over Kosovo

Post  SDBolts on Wed Oct 17, 2007 3:18 pm

Uberwarz wrote:I think it was clear luck that they hit the F-117
Uh no... it's just 1960s dinosaur age radars are too much for the "super futuristic" F-117 CockupyourassintheNight
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Re: The truth Behind the Downed F117 over Kosovo

Post  Kansiov on Thu Oct 25, 2007 5:06 am

No one has stealth, there would never be true stealth.

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Re: The truth Behind the Downed F117 over Kosovo

Post  ComradeLynx on Thu Oct 25, 2007 1:59 pm

Now imagine what S-300-->... systems can do...! bounce

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Americans stole stealth from Soviets
http://video.google.com/videoplay?docid=5291484096194699595

Sad but true.

-------------
American soldier falls from a helicopter?

http://www.youtube.com/watch?v=z7dQBt41ye0
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Re: The truth Behind the Downed F117 over Kosovo

Post  su37rulez on Thu Oct 25, 2007 2:28 pm

ComradeLynx wrote:Now imagine what S-300-->... systems can do...! bounce
A lot!cheers
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Re: The truth Behind the Downed F117 over Kosovo

Post  T80s on Sun Nov 04, 2007 12:47 pm

hm.. what if it was s-400?
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