DEFENSE TECHNOLOGIES

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The Scientific Industrial Unitary Enterprise"Tetraedr" is a company, specializing in devel�opment and production of radio�electronicand radar units and systems, training and aux�iliary assets (training simulators, target simula�tors) for radio�electronic and radar weaponsystems as well as in upgrade of antiaircraftmissile systems.

The enterprise has achieved the most sig�nificant results in the field of development,design and production of missile control sys�tems designated for antiaircraft missileweapons. "Tetraedr" has developed and testedin practice (by live firings) innovative missileguidance methods � "KDC" (kinematical differ�ential control) guidance method and "MTP"(modified three points) guidance method. TheKDC and MTP missile guidance methods allowto considerably enhance combat efficiency ofmodern surface�to�air missile (SAM) systemswithout any upgrade of the missile itself.Company has also made progress in the field ofradar systems protection against active jam�ming. These developments are the basics of anumber of antiaircraft missile system upgradeprojects carried by this enterprise.

The project for upgrading the S�125�2T"Pechora�2T" SAM system (SA�3 "Goa" NATOdesignation) is a well�known example. Theincorporation of innovative methods of missileguidance (KDC and MTP) and a newly devel�oped receiving device in the S�125 SAM sys�tem enabled us to create, as a result of thisupgrade, a SAM system that meets modernrequirements set to combat efficiency and jam�ming immunity.

In November, 2004 the first upgraded S�125�2T "Pechora�2T" SAM system was suc�cessfully tested during state tests with live firingsand accepted for service and operation in theRepublic of Kazakhstan.

Employment of these developments inupgrading the "OSA" SAM system (SA�8"Gecko" NATO designation) allows to tangiblyenhance the principle performance character�

istics of the system and make them comparablewith characteristics of advanced SAM systemssuch as "Tor" (SA�15 "Gauntlet" NATO designa�tion), "Grotal", "ADATS". The "OSA" SAM systemupgrade project was designated "OSA�1T".

The important aspect of the "Pechora�2T"and "OSA�1T" SAM systems upgrade projectsconsists in the fact that all works for upgradingthe S�125 "Pechora" and "OSA" SAM systemsare carried out on the customerterritory. Terms of upgrading abatch of a few SAM systems,including repair and restorationworks, does not exceed 8�10months. Thus, a customer, bearingonly minimum financial and timeexpenditures, would get a SAMsystem repaired and upgraded thatmeets modern requirements and iscapable of being operational andexecuting combat tasks during aperiod of 10�15 years.

The company's developmentsare also used in upgradingEuropean�made SAM systems. Atpresent the Unitary enterprise"Tetraedr" is engaged in moderniz�ing a SAM system made in one ofthe countries of Western Europewith the view of stepping up itscombat efficiency by incorporatingnovel missile guidance methods(KDC and MTP).

Another direction of the com�pany's activities is development andproduction of electronic warfaresystems, allowing for successfulcounteraction against high precision weaponsand better protection of objectives covered.

The product mix of the enterprise alsoinvolves the IVTs�M1 and IVTs�M2 aerial targetsimulators, designed for training combat crewsof short�range antiaircraft missile systems whenconducting live firings and for debugging andtesting newly developed SAM systems.

The IVTs�M1 and IVTs�M2 aerial targetsimulators feature technical characteristicsthat provide simulation of modern small�sizeand high�speed aerial attack assets. The M1modification enables the simulation of aerialtargets in the radar wave band of 2�4 cm TheM2 modification additionally provides aerialtarget simulation in the visible optical andinfra�red wave bands.

The IVTs�M1 and IVTs�M2 aerial target sim�ulators are installed in place of the organic9M28D (9M22U) rocket warhead of the "Grad"BM�21 salvo system. The IVTs�M1 and IVTs�M2aerial target simulators are in service with theRepublic of Belarus' Armed Forces and areused for simulating targets in combat training ofAir Defense units.

All products developed by the company,including the upgraded "Pechora�2T" and"OSA�1T" SAM systems will be exhibited at the"MILEX�2005" 3rd International MilitaryEquipment and Weapons Fair to run in Minsk onMay 17�20, 2005.

Scientific Industrial Unitary Enterprise "Tetraedr"169, F. Skorina Avenue, Minsk, 220114 Republic of BelarusTel.: + (375�17) 218�1234Fax: + (375�17) 218�1235E�mail: info@tetraedr.comwww.tetraedr.com

'TETRAEDR' – TOWARDS HIGHER EFFECTIVENESS

AT LOWER COSTS

Anatoly SOKOLOV

Tactical and performance "OSA�AKM" "OSA�1T" characteristicsTarget channels 1 1 (2)Maximum speed of target engaged, head�on/receding, m/sec. 500/300 700/350Maximum altitude of target engaged, km 5 7Range to remote boundary of kill zone, kmTactical aviation/Helicopter 10,3/6.5 12/10Maximum cross range of target engaged, km 6 8SAM system jamming immunity, W/MHz 24 1100Target kill probability with one SAM:a) tactical fighter 0.5�0.7 0.6�0.8b) helicopter 0.4�0.7 0.6�0.8c) maneuvering target 0.2�0.5 0.4�0.7

Tactical and performance "Pechora" "Pechora�2T" characteristicsTarget channels 1 2Maximum speed of target engaged, head�on/receding, m/sec. 700/300 900/300Maximum altitude of target engaged, km 18 25Range to remote boundary of kill zone, km 24.8 35.4Maximum cross range of target engaged, km 16.5 25SAM system jamming immunity, W/MHz 24 2700Target kill probability with one SAM:a) tactical fighter 0.45�0.92 0.85�0.97b) helicopter 0.16�0.28 0.75�0.95c) cruise missile 0.04�0.48 0.45�0.95d) maneuvering target 0.20�0.50 0.55�0.97

IVTs�M1 air target simulator

IVTs�M2 air target simulator