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Indian Doppler Radar

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Title: Indian Doppler Radar  
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Subject: Defence Research and Development Organisation, DRDO NETRA, A. P. J. Abdul Kalam, Bharat Electronics, Carrier Mortar Tracked
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Indian Doppler Radar

The Indian Doppler Radar (INDRA) series of 2D radars were developed by India's DRDO for the Army and Air Force. The INDRA-I is a mobile surveillance radar for low level target detection while the INDRA-II is for ground controlled interception of targets.


INDRA-I is a 2D mobile surveillance radar for low level target detection. The radar is housed in two wheeled vehicles. Some of the main features are automated

Indian Doppler Radar (INDRA II) 2D Mobile Radar - Sri Lanka Airforce


  • Fully coherent system
  • Frequency agility
  • Pulse compression
  • Advanced signal processing using MTD and CFAR Techniques
  • Track while scan for 2-D tracking
  • Full tracking capabilities for maneuvering targets
  • Multicolour PPI Raster Scan Display, presenting both MTI and Synthetic Video
  • Integral IFF
  • Ease of transportation and fast deployment

Current status

Indian Doppler Radars are in production at BEL (Bharat Electronics Limited) and are being used by the Indian Armed Forces. A few systems have been exported to Sri Lanka and have been used to detect planes of the LTTE's air wing.[1]

Current operators

 Sri Lanka

System characteristics

  • Range up to 90 km (for small sized fighter aircraft)
  • Height coverage 35 m to 3000 m subject to radar horizon
  • Probability of detection : 90% (Single scan)
  • Probability of false alarm: 10E-6
  • Track While Scan (TWS) for 2D tracking
  • Capability to handle 200 tracks
  • Association of primary and secondary targets
  • Automatic target data transmission to a digital modem/networking of radars
  • Deployment time of about 60 minutes


  1. ^

External links

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