https://indianpedia.org/index.php?action=history&feed=atom&title=Indian_Doppler_RadarIndian Doppler Radar - Revision history2026-07-30T18:24:00ZRevision history for this page on the wikiMediaWiki 1.45.4https://indianpedia.org/index.php?title=Indian_Doppler_Radar&diff=374490&oldid=prevBot at 08:18, 23 February 20222022-02-23T08:18:54Z<p></p>
<p><b>New page</b></p><div>{{Short description|Mobile surveillance radar}}<br />
{{Use dmy dates|date=March 2020}}<br />
{{Use Indian English|date=February 2016}}<br />
{{Infobox Radar<br />
| name = Low Flying Detection Radar<br />
| image = File:Sri Lanka Military 0257.jpg<br />
| caption = INDRA-I of Sri Lanka Air Force<br />
| country = [[India]] <br />
| manufacturer = [[Bharat Electronics Limited]]<br />
| introdate = <br />
| number = <br />
| type = [[Secondary surveillance radar]]<br />
| frequency = [[L band (NATO)|L band]]<br />
| range = <br />
| altitude =<br />
| diameter = <br />
| azimuth = <br />
| elevation = <br />
| precision = <br />
| power = <br />
| other names = INDRA<br />
|designer=[[Defence Research and Development Organisation|DRDO]]}}<br />
<br />
The '''Low Flying Detection Radar''' also called '''Indian Doppler Radar''' (INDRA) series of 2D radars were developed by [[Electronics and Radar Development Establishment]] (LRDE), of [[Defence Research and Development Organisation]] (DRDO) for the [[Indian Army|Army]] and the [[Indian Air Force|Air Force]]. These were then produced by the [[Bharat Electronics]] which generally the production partner of LRDE. The INDRA-I is a mobile surveillance radar for low level target detection while the INDRA-II is for ground controlled interception of targets.<br />
<br />
== INDRA-I ==<br />
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 [[Track While Scan]] (TWS), integrated IFF and high scan rate for high speed target detection. The radar is produced by [[Bharat Electronics Limited]] and inducted into service. The INDRA-I was a landmark project for the DRDO, as it was the first large radar system designed by the organization and produced in number for the defence forces. The Indian Air Force operates thirty INDRA-I's whereas the Indian Army also has several.<br />
<br />
== INDRA-II ==<br />
It is a variant of INDRA radar for ground controlled interception of targets. The radar uses pulse compression for detection of low flying aircraft in heavy ground clutter with high range resolution and ECCM capabilities. The radar has been produced by Bharat Electronics Limited and is used by Indian Air Force and Army. Seven INDRA-IIs have been ordered by the Indian Air Force.<br />
<br />
== Features ==<br />
*Fully coherent system<br />
*Frequency agility<br />
*Pulse compression<br />
*Advanced signal processing using MTD and CFAR Techniques<br />
*Track while scan for 2-D tracking<br />
*Full tracking capabilities for maneuvering targets<br />
*Multicolour PPI Raster Scan Display, presenting both MTI and Synthetic Video<br />
*Integral Identification Friend or Foe ([[Identification friend or foe|IFF]])<br />
*Ease of transportation and fast deployment<br />
<br />
=== System characteristics ===<br />
* Range up to 90&nbsp;km (for a F16 Type [[Fighter aircraft|Fighter Aircraft]]).<br />
* Height coverage 35 m to 3000 m subject to [[radar horizon]].<br />
* Probability of detection : 90% (Single scan).<br />
* Probability of false alarm: 10E-6.<br />
* Track While Scan (TWS) for 2D tracking.<br />
* Capability to handle 200 tracks.<br />
* Association of primary and secondary targets.<br />
* Automatic target data transmission to a digital modem/networking of radars.<br />
* Deployment time of about 60 minutes.<br />
<br />
== Current status ==<br />
Indian Doppler Radars are in production at [[Bharat Electronics Limited]] (BEL) 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 Tigers|air wing]].<ref>{{Cite web|url=http://sundaytimes.lk/080914/Columns/sitreport.html|title=Columns - Situation Report}}</ref><br />
<br />
==Operators==<br />
{| class="wikitable sortable"<br />
|+Operators of Indian Doppler Radar<br />
!Operating Agency<br />
!Country <br />
|-<br />
|{{nowrap|[[File:Flag of Indian Army.svg|22px|border|Indian Army seal]] [[Indian Army]]}}<br />
|{{IND}} <br />
|-<br />
|{{nowrap|[[File:Air Force Ensign of India.svg|22px|border|Indian Air Force Seal]] [[Indian Air Force]]}}<br />
|{{IND}}<br />
|-<br />
|{{nowrap| {{flagicon image|Air Force Ensign of Sri Lanka.svg}} [[Sri Lanka Air Force]]}} <ref>{{Cite web|title=Columns - Situation Report|url=http://www.sundaytimes.lk/080914/Columns/sitreport.html|access-date=2020-10-08|website=www.sundaytimes.lk}}</ref><br />
|{{LKA}}<br />
|}<br />
<br />
== References ==<br />
{{Reflist}}<br />
<br />
== External links ==<br />
* [http://www.drdo.com/labs/lrde/achieve.html LRDE RADARs]<br />
* [https://web.archive.org/web/20080316041219/http://www.bel-india.com/Website/StaticAsp/prod_radar2.htm BEL INDRA II]<br />
<br />
{{Defence Research and Development Organisation (DRDO)}}<br />
<br />
[[Category:Ground radars]]<br />
[[Category:Military radars of India]]<br />
[[Category:Defence Research and Development Organisation]]</div>Bot