passive, it cannot be detected, so the targeted aircraft are unaware of

detection and have nothing to home in to destroy the equipment ...

Here is the opinion of an Ukrainian Air Force officer, who flies Mig-29

and knows the equipment well...

QUOTE: It will pick up any of the stealth aircraft, they just will be closer than the others. The triangulation of Kolchuga helps to get different angles of the RCS of the stealth aircarft. This makes a bigger target on the radar screen. While the F-22 may be RCS of .05m head on, Kolchuga will get 2m RCS by hitting the F-22 from different angles thereby making her cross section bigger. http://www.irandefence.net/showthread.php?t=4495

QUOTE: Your western nations have not had the oportunity to "counter" it

as they have never faced it. Ukraine makes some of the most

sophisticated weapons in the world and are more than capable to defeat

US systems.

http://www.irandefence.net/showthread.php?t=4474

Global Security, a US specialized Website, even admits the capability:

QUOTE: The relatively cheap Ukrainian Kolchuga radar station, which is

able to detect and identify practically all known active radio devices

mounted on ground, airborne, or marine objects, actually cancels out all

those billions of dollars spent on stealth-based armaments.

http://www.globalsecurity.org/military/world/ukraine/kolchuga.htm

This is a dream come TRUE for the defense of Iran against the Zionist

first strike ... this could certainly turn the tide.

Neal

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Ukraine sells Kolchuga to Iran

The Kolchuga is intended to detect the take-off and formation of aircraft groups at ranges beyond those of existing radar, as well as determine the course and speed of targets while designating them for air-defence systems. It can identify aerial targets through their emissions and identify the mode of aircraft weapon control systems.

Three Kolchuga stations would normally operate along with a command

vehicle to provide accurate triangulation on a target. The system is claimed to have a range of 600 km (narrow beam) or 200 km (wide beam) along a front of 1,000 km.

It is not known how many Kolchuga stations Iran has acquired. However,

sources told Jane's that each costs about USD25 million, with deliveries

either recent or imminent.

http://www.janes.com/defence/news/jd...0922_1_n.shtml

When the newly independent Ukraine that had only just survived a severe

economic crisis, developed an advanced passive radiolocation complex, it

was a severe blow to the Americans, who were so sure of their domination in the air thanks to their stealth planes. On the one hand, the

advantages of the attacker's "invisibility" were reduced to zero. On the

other, passive radiolocation, i.e., the absence of the radar's own

radiation, radically reduced the disadvantage of insufficient secrecy.

Besides, an attacking object detected by a passive radar is never aware

of its detection and so has no reasons to activate its own defenses. It

means that the most important advantage is now in the hands of the air

defense, especially considering the impression produced on experts by

the latest Kolchuga modification.

- A complex consisting of three Kolchuga radar stations makes it possible to spot ground and surface targets and trace their movement within a radius of 600 km (air targets at the 10 km altitude - up to 800 km), which makes an effective early warning air defense system;

- The Kolchuga station is equipped with five meter-, decimeter-, and

centimeter-range aerials, which provide for high radio sensitivity

within a 110dB/W - 155 dB/W swath, depending on the frequency;

- A parallel 36-channel preset receiver makes it possible to spot instantly, identify, and classify signals from any source with unlimited input density within the entire frequency range from 130MHz to 18,000MHz;

- All radio objects are spotted and identified automatically, a powerful

computer digitizing and identifying targets by comparing their parameters with the available databank, results being shown on a field display;

- Special inhibitory sorters omit up to 24 interfering signals, and tracking sorters make it possible to synchronously sort out and track signals from 32 targets;

- All normal operations require only one operator (two other operators work on a shift basis for 24-hour duty), who controls the station through dialog with a PC.

Since the whole U.S. non-nuclear military power hinges on stealth technologies, the prospect of worldwide proliferation of the unique Ukrainian radar systems definitely runs counter to U.S. interests. They were first demonstrated at the SOFEX-2000 arms expo in Jordan. That is, probably, why such close interest, especially from the United States,

catalyzed the notorious "Kolchuga scandal".

The Ukrainian scientific, engineering, and design solutions in the field

of passive radiolocation, embodied in the Kolchuga complex, are what is

eating U.S. designers and government functionaries, who are responsible

for stealth technologies in modern armaments. Such technologies are

meant to fulfill every general's dream: to make his aircraft, ships,

tanks, and other hardware invisible to enemies. The geometrical shape

may be changed (like in the F-117 or B-2) to disperse a reflected signal

from active radars, or there may be various wave-absorbing coatings to

transform active signals into heat energy. But no modern military

aircraft, tank, or ship can exist without its own radar. Without a

radiating aerial it is simply "blind". That is why every aircraft, ship,

and ground-based radar complex has active radiolocation devices. These

devices are always on, emitting radio signals. Each specific type of

hardware emits signals within different parameters. Consequently, a

machine on which an emitting radar is mounted can be identified.

Competitors Lagging Far Behind

Such a promising trend as passive radiolocation is certainly of great

interest to highly developed countries. But the Ukrainian Kolchuga

radar, with all its technical and operational characteristics taken

together, has no analogs anywhere in the world. And in its basic

parameters it surpasses all known means of the same or similar purpose.

The 800-km detection range has been achieved only by the Ukrainian

Kolchuga. The best the U.S. AWACS can do is 600 km, while the

ground-based complexes Vera (Czech Republic) and Vega (Russia) can reach

out up to 400 km - half what the Ukrainian complex can reach. The

Kolchuga's lower limit of the working frequency range is 130MHz and is

the lowest of all analogs. For the AWACS it is 2,000 MHz, for the Vera

it is 850MHz, for the Vega it is 200MHz.

But where the Kolchuga has the greatest advantages is its ability to

identify accurately radio objects thanks to unique algorithms and

hi-tech equipment. In particular, the mean square deviation in frequency

measurement - the most informative parameters for identifying types of

spotted radio objects - is 0.4MHz in the Kolchuga. It is 0.5MHz - 1.0MHz

in the Russian Vega, 1.0MHz in the U.S. AWACS, and as much as 3.6MHz - 21.0MHz in the Czech Vera. The maximal duration of detected impulses, measured by the Kolchuga, is 999.0 microseconds, versus 99.9

microseconds for the AWACS and 200 microseconds for the Vera. And the

impulse repetition period can be measured by the Kolchuga up to the

maximum of 79,999 microseconds, while no analogs can perform such

measurements longer than 10,000 microseconds. As a result, the number of detected radio objects that the Kolchuga can classify is practically

unlimited, which can not be said about any known analogs. The Ukrainian

station has advanced algorithms and software programs for analyzing,

systematizing, generalizing, and storing information about all radio

objects and parameters of their signals. And the data already collected

in the database can be used to identify newly detected radio objects and

can be correlated with data obtained from other reconnaissance sources.

It should be noted that the Kolchuga's undeniable advantages are not

accidental or temporary. The Ukrainian product is head and shoulders

above all American, Russian, French, Czech, or Brazilian developments in

this field. But those who developed and made this unique product aren't

resting on their laurels. They continue to work.

Several contracts for exporting Kolchuga complexes have been fulfilled,

but that is well below the export potential of this product, which already has numerous prospective buyers.

http://www.hi-tech.org.ua/Ukraine/offshore-outsourcing-in-ukraine/publication/kolchuga-confidence/index.html