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Kolchuga-M Russian Passive Early Warning Radar System

Passive Early Warning Radar System
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Basic Information
Name
Kolchuga-M Russian Passive Early Warning Radar System
Designation
Alternate Designation
Equipment Type
Passive Early Warning Radar System
Manufacturer
Date of Introduction
2000
Description

The Kolchuga-M passive detection system is truck-mounted and detects aircraft electromagnetic emissions in the VHF, UHF, and SHF wavebands. It identifies and tracks incoming aircraft at long range for acquisition by separate air defense systems. The team of designers with the Topaz state holding, who developed the sophisticated hi-tech [kol-CHOO-gah, Russian for "hauberk"] passive early warning radar equipment, was nominated for the State Science and Engineering Prize. A hauberk is a short tunic made of a mesh of interlinked metal rings. The new-generation strategic long-range passive radar complex "Kolchuga" meets the most stringent moral-ethical and environmental standards as absolutely harmless to people or the environment. It is unique because, firstly, all research, development, pre-process, and serial production works were performed by the Topaz holding and funded through Ukrspetsexport investment and Prominvestbank credits; secondly, the high technological level of the Ukrainian radar was asserted de facto by the most developed and powerful country, the trendsetter in the military sphere. 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 radiosensitivity within a 110dB/W - 155 dB/W swath, depending on the frequency. 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. This was developed by the Special Radio Device Design Bureau public holding, the Topaz holding, the Donetsk National Technical University, the Ukrspetsexport state company, and the Investment and Technologies Company. It took them eight years (1993 - 2000) to conduct research, develop algorithms, test solutions on experimental specimens, and launch serial production. The new product dramatically changed the balance in the constant competition between offensive and defensive means. 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. On 15 September 2002, the US State Department made its first public accusation that President Leonid Kuchma personally approved the Kolchuga sale to Iraq via a Jordanian intermediary. The State Department said it had based its accusations on secret tape recordings made by Mykola Melnychenko, a former presidential bodyguard now in exile in the United States. The change in U.S.-Ukraine relations was triggered by authentication of a 90-second audio recording from July 10, 2000. The excerpt contained a conversation between Kuchma and Ukrspetsexport chief Valery Malev, in which Kuchma approves a sale of Kolchuga systems to Iraq. In a transcribed nine-minute conversation Kuchma discusses not only the Kolchuga sale to Iraq but also a deal to repair Libya's MIG-25 fighter jets. In the conversation, Kuchma gives Malev permission to bypass the State Service for Export Control for the deal. The US concluded that the recording of the Ukrainian president is authentic. Sales of such radar systems would be a clear violation of United Nations Security Council Resolution 661, which prohibits any sale or supply of "weapons or any other military equipment" to Iraq. Equipment like the Kolchuga system could pose a threat to aircraft of the U.S.-led coalition patrolling the no-fly zones over northern and southern Iraq. The government of Ukraine denied selling Iraq the radar systems and invited international experts to Ukraine to investigate the charges. But as State Department spokesman Boucher said, the government of Ukraine has not been candid on this issue. And US Ambassador to Ukraine Carlos Pascual suggested Ukrainian officials may have destroyed or manipulated evidence of the radar sales. The U.S. Government and its NATO allies responded by downgrading Ukraine's participation in the NATO-Ukraine Commission meeting at the November NATO Summit in Prague from a summit to a ministerial. Nevertheless, concurrently, Ukraine developed with NATO a detailed and forward-leaning Action Plan to accelerate Ukraine's integration with NATO. The United States "initiated a temporary pause in new obligations of Freedom Support Act assistance that goes to the central government in Ukraine" and is reexamining its policy towards Ukrainian President Leonid Kuchma after determining that a tape recording of Kuchma approving the sale of an early warning system to Iraq is authentic, State Department Spokesman Richard Boucher told journalists in Washington 24 September 2002. "We've recently concluded an analysis of a July 2000 recording that was provided by the former Ukrainian presidential bodyguard, Mykola Melnychenko. On one of the tapes, Ukrainian President Leonid Kuchma is heard approving the clandestine sale of 'Kolchuga' early warning systems to Iraq, and we believe this recording to be authentic," Boucher said. "Our ongoing policy review reflects our serious concern that illicit transfers to Iraq were approved by President Kuchma, as well as our determination to discourage further transfers by Ukraine or by any other country that violates UN sanctions on Iraq," he continued. While the United States was not certain that the Kolchuga system has arrived in Iraq and been deployed, "there are some indications that suggest it may be there," Boucher said, adding, "It is a very serious matter to have a national leader approving a sale in violation of UN resolutions." Asked whether the United States will take action against Ukraine at the United Nations for its violations of UN resolutions, Boucher replied: "I don't know. We'll have to see." These programs had a budget of approximately $54 million in the fiscal year 2002 and they represent about 35 percent of our total Freedom Support Act assistance to Ukraine. Programs that are funded under this budget included work with the Ukrainian Government on reforms in fiscal and commercial law, pensions, and government regulations. It was impossible to track the matter down by a joint American-British commission sent to Ukraine in 2002 to investigate this purported sale. As of mid-2004, the US had not located Kolchuga systems in Iraq, and the transfer might not have taken place. Jane's Defense Weekly, dated September 27, 2006, carried a story, strangely datelined Bangkok, reporting that Ukraine had recently delivered or was imminently preparing to deliver an unknown number of Kolchuga systems to Iran for an estimated price of USD25 million per system. Information for the news story originated from Vietnamese arms traders working in Central Europe. Both the Ukrainian Security Service (SBU) and the State Service for Export Controls had responded September 25 to MFA's written inquiries to report that they had uncovered no evidence of such sales. The interagency Presidential Committee on Military-Technical Cooperation and Export Controls had met on September 27 and discussed the issue. They had decided that the Ukrainian government would not stoke the controversy by denying the claim; on an if-asked basis, however, Ukrainian government officials would deny that any such sale had taken place.

Ground Specifications
Crew 2
Engine V-8 Diesel
Active Protection None
Max Speed 76.0 km/h
System
Alternative Designations Kolchuga-M
Type Passive Early Warning Radar System
Manufacturer INA
Mission The Kolchuga-M passive detection system is truck-mounted and detects aircraft electromagnetic emissions in the VHF, UHF, and SHF wavebands. It identifies and tracks incoming aircraft at long range for acquisition by separate air defense systems.
In Service 2000-Present
Components for Complex 2-3 vehicles plus control post
Crew 2 at the receiving station, 3or 4 at the control post.
Platform 6x6 van
Antenna Type 4 in VHF, UHF, and SHF
Frequency Range 0.13-18 GHz (to include X and Ku bands.
Azimuth Coverage 360 deg
Surveillance range 450-620 km depending on target altitude and frequencies. The latter figure is for targets at 18.5 km altitude. The manufacturer claims 800 km (maybe valid - some frequencies).
Effectiveness Against Stealth Reported but not likely
Maximum Number of Targets Tracked 32
Range for a Complex 1,000 km frontage or 450-600 radius.
Operation Duration Time 24 hours
Operation Radius 600 km (air targets at the 10 km altitude - up to 800 km), which makes an effective early warning air defense system.
Range Aerials The Kolchuga station is equipped with five-meter -, decimeter-, and centimeter-range aerials, which provide for high radiosensitivity within a 110dB/W - 155 dB/W swath, depending on the frequency.
Mode of Operation Kolchuga is an electronic support measures system that employs two or more sites to locate emitters by triangulation. The system is vehicle mounted and comprises a large vertical meshed reflector, with two smaller circular parabolic dishes beneath and a pair of VHF-to-microwave log-periodic antennas above. The dishes may exploit amplitude monopulse techniques for improved direction-finding, whilst the angled spacing of the log-periodic antenna suggests that they may use phase interferometry to improve angle measurements. Various smaller antennas, presumably for inter-site communications are to the side and rear of the dish. The detection range is one of the best in its class, but it is highly dependent on the emitted power of the transmitter being tracked and requires satisfaction of the line of sight condition to at least two receiving sites for triangulation (compared with three sites for a multilateration system such as the VERA passive sensor). A Kolchuga complex can detect and locate air and surface targets and trace their movement to a range generally limited only by the common line-of-sight of the stations.
System Parameters According to the manufacturer's brochure (from AIDEX 1997), the upgraded Kolchuga-M is equipped: With four antennas in the VHF, UHF, and SHF radio bands with narrow and wide beams. With parallel receivers allowing the instant discovery and analysis of signals of radio technical equipment (RTE) in the range 100 MHz -18 GHz and continual tracking across the entire band. [Other sources claim from 130MHz to 18GHz, and a 36 channel preset receiver]. With a sensitivity of approximately -145 dBW With equipment for the analysis, processing, and continual calculation and tracking of coordinates by triangulation and chronometrical-hyperbolic method. With equipment for the identification, operative displaying of information, long-term memory, and recording of the results of processing.
Target Identification Kolchuga is able to detect and identify many types of radio devices mounted on the ground, airborne, or marine objects. Target detection relies only on an emitter having sufficient power and being within Kolchuga's frequency range. Target identification, however, is more complex and is based on the measurement of different parameters of the transmitted signal—such as its frequency, bandwidth, pulse width, pulse repetition interval, etc. Kolchuga has been reported to use around forty different parameters when identifying a target. These parameters are compared to a database in order to identify both the type of emitter and, in some cases, even the specific piece of equipment (by identifying the unique signature or "fingerprint" that most transmitters have, due to the variations and tolerances in individual components). The database within Kolchuga is said to have the capacity to store around three hundred different types of the emitter and up to five hundred specific signatures for each type.
Dimensions (Ural 375)
Length 7,350 mm
Width 2,960 mm
Height 2,980 mm
Curb Weight 8,400 kg
Automotive
Engine Name 7.0L ZIL-375YA
Engine Type V-8 Diesel
Engine Power INA
Fuel Capacity 314 liters
Transmission 5-speed manual + 2-speed transfer case
Range INA
Maximum Speed 76 km/h
Protection
Armor INA
Applique Armor INA
Active Protection System No
NBC Protection INA
Smoke Equipment INA
Details
Country of Origin Russia
Category Radars
Land > Radars
Filter Label
K
Classification
Domain
Ground
Equipment Status
Active
Dimensions
Length
Width
Height
Weight
8400 kg
Operators (4)
Russia
Israel
Ukraine
Saudi Arabia
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