KLJ-7#KLJ-7A
{{Short description|Type of aircraft fire-control radar}}
{{Use dmy dates|date=April 2023}}
{{Infobox Radar
|name = KLJ-7
|alt = Pakistan airforce FC-1 Xiao Long
|image = Pakistan_airforce_FC-1_Xiao_Long.jpg
|caption = Pakistan airforce FC-1 Xiao Long
|country = {{PRC}}
|introdate = Mid-2000s
|number =
|type = Airborne, multi-mode, pulse-doppler, fire-control radar ( V-1) or active electronically scanned array radar ( V-2)
|frequency = X band
|range = In look up mode 150 km for 5m2 RCS (V1){{Cite web|url=http://www.jf-17.com/avionics/|title=JF-17 Avionics | JF-17 Thunder|date=7 April 2011 }}
In look down mode 100 km for 5m2 RCS (V1) 120 km for KLJ-7A.
|altitude =
|diameter =
|azimuth =
|elevation =
|precision =
|power =
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The KLJ-7, also referred to as the Type 1478, is an X band airborne fire-control radar (FCR) developed by Nanjing Research Institute of Electronic Technology (NRIET), also known as the China Electronics Technology Company's (CETC's) No. 14 Research Institute. In December 2010, Pakistan Air Force's Air Chief Marshal Rao Qamar Suleman announced that KLJ-7 radar will be built at Pakistan Aeronautical Complex (PAC), in Kamra, north of Islamabad.
Development and design
The KLJ-7 uses a mechanically steered planar array antenna and bears similarities with the various Russian radars imported in the 1990s. Russian radar design houses Phazotron and NIIP had worked closely in the past with the Chinese radar design bureaus and provided technical assistance as well as operational models of Russian-made radar sets that were used as benchmarks in the process of these Chinese firms developing their own design. Up to 20 units of the Phazotron Zhemchoug ('Pearl) radar were imported in the mid-1990s for evaluation along with 2 units of Phazotron (NIIR) RP-35,{{Cite web|url=http://articles.janes.com/articles/Janes-Avionics/KLJ-710-Fire-Control-Radar-FCR-China.html|archive-url = https://web.archive.org/web/20121028055642/http://articles.janes.com/articles/Janes-Avionics/KLJ-710-Fire-Control-Radar-FCR-China.html|archive-date = 28 October 2012|title = Defense & Security Intelligence & Analysis: IHS Jane's | IHS}}
The KLJ-7V1 has multiple modes, both beyond visual range (BVR) and close-in air-to-air modes, ground surveillance modes and anti-jamming capability.{{cn|date=February 2025}} The radar can reportedly manage up to 40 targets, monitor up to 10 of them in track-while-scan (TWS) mode and simultaneously fire on two BVR targets. The detection range for targets with a radar cross-section of 3 square meters is stated to be ≥75 km (≥35 km in look-down mode).{{cn|date=February 2025}} Surface sea targets can be detected at up to 135 km. Most modern Chinese air-launched weapons, such as the short-range PL-9C and the beyond-visual-range PL-12 (SD-10) air-to-air missiles are supported by the KLJ-7. {{cn|date=February 2025}} It has been reported that KLJ-7 also has modes to support a range of NATO weaponry.{{cn|date=February 2025}}
According to a Pakistan Aeronautical Complex programme officer, after having "flown with this radar" as well as "other models... such as the Thales RC400" and evaluating them for the JF-17 lightweight fighter, the Chinese radar is "every bit as capable as its contemporary analogues."{{cite web|first=Farhan|last=Bokhari|title=Pakistan To Build Radar for JF-17 'Thunder' Fighter|publisher=Jane's Information Group|date=24 December 2010|url=http://www.janes.com/news/defence/jdw/jdw101224_1_n.shtml|accessdate=4 February 2011}}{{dubious|It is extremely uncommon for older radars to be "every bit as capable as their contemporary analogues". This is promotional puffery.|date=February 2025}}
A more powerful model, called the KLJ-7V2, has been produced.{{cn|date=February 2025}}
=Radar modes=
- Range While Search (RWS)
- Velocity Search (VS)
- Single Target Track (STT)
- Track While Scan (TWS)
- Dual Target Track (DTT)
- Situational Awareness Mode (SAM)
- Air Combat Mode (ACM)(with five sub-modes)
- Real Beam Map (RBM)
- Doppler Beam Sharpening (DBS)
- Ground Moving Target Indication/Ground Moving Target Track (GMTI/GMTT)
- Air to Ground Ranging (AGR)
- Synthetic Aperture Radar (SAR)
- Sea Single Target Track (SSTT)
- Beacon (BCN)
Specifications
Data from: JF-17 official website
- Frequency: X band
- Range:
- Look-up: >105 km (for RCS of 5m2) (V1) or 200 km (for RCS of 5 m2) (V2),
- Look-down: >85 km (for RCS of 5m2) (V1) or V2
- Total targets tracked: 10 in TWS (Track-While-Scan) mode (V1)
- Reliability:
- MTBF (Mean Time Between Failure): 220 hours
- MTTR (Mean Time To Recovery): 0.5 hours
- Weight: ≤120 kg
- Volume: 0.065 m3
See also
References
{{reflist}}
External links
- [https://web.archive.org/web/20121028055642/http://articles.janes.com/articles/Janes-Avionics/KLJ-710-Fire-Control-Radar-FCR-China.html China's NRIET outlines fighter radar improvements]