FIRE CONTROL SYSTEM WITH ACTIVE ARRAY RADAR “STILET-2“

Optical-radar tracking system “Stilet” in different weather conditions, day and night-time provides: detection in a given sector and automatic tracking of air, surface and coastal targets, shooting management of universal medium-caliber artillery (76 ... 130 mm)


SYSTEM OVERVIEW

 

Optical-radar tracking system "Stilet" in different weather conditions, day and night-time provides: 

  • detection in a given sector and automatic tracking of air, surface and coastal targets
  • shooting management of universal medium-caliber artillery

 

SYSTEM PROVIDES

  • Autonomous detection of air, low-flying, surface and coastal targets in sector
  • Primary target designation  and in  autonomous (reserve) mode, including in sectors affected by radio jamming
  • Automatic target acquisition, capture and tracking in  angular coordinates and range
  • Calculation of complete gun guidance angles in the horizontal and vertical planes
  • Inertial target tracking in bearing and elevation
  • Mapping and documenting of current information
  • Observation points falling projectiles and measure deviations for  corrections of  firing at surface and coastal targets
  • Accounting meteorological and ballistic correctives  in shooting management
  • Generation and display of shooting management information
  • Self diagnostics with display of fault reports
  • Simulation mode for training of operators on system combat use

 

TECHNICAL CHARACTERISTICS

 

Frequency band

8,6…9,5 GHz

Autonomous search range:

-  maximum elevation coverage

0° to 360°

-  in bearing

0° to +50°

-  in elevation in the deck frame

0,25 - 50 km

-  in range 

0° to 360°

Target designation range:

-  in bearing

0° to 360°

-  in elevation (in the deck frame)

0° to +85°

-  in range 

– 20° to +120°

anti-ship missile with RCS=0,05 m2

≥  17 km

aircraft with RCS=1 m2    

≥  50 km

Instrumental ranges

100; 60; 30; 18; 10; 5 km

Area of the antenna mechanical slewing in the deck frame:

-  in bearing              

0° to 360°

-  in elevation

– 10° to +90°

Angle of electric beam deviation with respect to the antenna direction:

-  in azimuth 

± 30°

-  in bearing

± 30°

Sector of multibeam (cluster) field of view (bearing x elevation) 

12° x 6°

Root-mean-square (RMS) error for R ≤ 25 km:

-  of angular tracking

≤ 0,5 mrad

-  of range tracking

≤ 5  m 

Number of simultaneously tracking targets 

≥ 10

Time from the beginning of tracking to readiness for shooting  

≤ 3 s

Fire transfer time for next target in electric beam scanning sector

± 30° for both coordinates  

≤ 1 s

 

RADAR MAIN PARAMETERS

 

Transmitting array beamwidth  (bearing  x elevation)

12° x 6°

Receiving array beamwidth  (bearing  x elevation)

1,5° x 1,5°

Number of receiving  beams in cluster (bearing  x elevation)

8 x 4

Transmitting antenna gain

>25 dB

Receiving antenna gain

 >39 dB

Number of spot frequencies

36

Noise figure

3 dB

Transmitted pulse power

3 kW

Transmitted pulse width

1,5 - 120 µs

Compressed pulse width (search; tracking)

0,9 µs; 0,15 µs

Pulse repetition frequency

1 - 28 kHz

Points of complex FFT processing

16 – 128

 

ECCM CHARACTERISTICS

 

  • ECCM  from chaff  provided by:

           -  high range and angular coordinates resolution

           -  high stability of the radar devices parameters

           -  using coherent signal processing, Doppler filters

           -  using clutter maps

           -  using adaptive Doppler-selective CFAR

  • ECCM from active noise jamming provided by:

           -  low antenna pattern sidelobe level

           -  using coherent sidelobe  jammer  nulling

           -  using a wide radar operating frequency band

           -  automatic analyzing of  jamming level and choice the least-jammed carrier frequencies

           -  fast pulse-to-pulse frequency agility

           -  pseudo-random frequency selection over the frequency band to counter spot jammers

           -  jammer bearing and elevation measurement and tracking

           -  using adaptive CFAR

  • ECCM from active pulse jamming provided by:

           -  using levels limiting  and pulse compression of  broadband pulse jammers

           -  asynchronous pulse interference suppression in range and Doppler frequency coordinates

           -  staggered PRF combined with pulse code agility and frequency agility




SOME HISTORY FACTS





10,000

Tonnes of iron
Shot at Siege of Sebastopol during Crimean War





144,000

Revolutions per minute
Does a bullet fired from Lee Enfield rifle, as used in both world wars





2,000

Women
The Nizam of Hyderabad raised in 1975 for his war against the Marathas





130,000

Meters
Is an effective range of Big Bertha, the World War I howitzer


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Contact Information

ABOUT SPETS TECHNO EXPORT

State Foreign Trade Enterprise “SpetsTechnoExport” is a fully state-run entity incorporated by the Government of Ukraine in 1998 for export-import activities at foreign armaments markets.

HEAD OFFICE

7, Stepana Bandery Avenue
Kyiv, 04073, Ukraine
tel: +380 44 5685070
fax: +380 44 5685068

LIAISON OFFICE

B-5/147 Safdarjung
110057, New Delhi
tel: +91 11 26153792
fax: +91 11 26153830

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