The JLP-40 is a tactical

air defense Anti-aircraft warfare (AAW) is the counter to aerial warfare and includes "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It encompasses surface-based, subsurface (Submarine#Armament, submarine-lau ...

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

designed to use with height finding radars such as the

JLG-43 Radar The JLG-43 radar is a nodding height finding radar, a two-dimensional (2D) radar which only provides azimuth and height data and is normally paired with other air search radars which provides the range to complete the picture. It is very similar to ...

. It is similar in design to the Russian " Bar Lock" series radar and may have been derived from it as part of the sale of the

SA-2 The S-75 (Russian: С-75; NATO reporting name SA-2 Guideline) is a Soviet-designed, high-altitude air defence system. It is built around a surface-to-air missile with command guidance. Following its first deployment in 1957 it became one of the ...

system from the Former

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

in the early 1960s. It features the same arrangement of the two large scanners attached to front and ear sides of a rotating cabin that houses the transmitter/receivers.

Operating modes

The system operates in D-band,

S-band The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz). Thus it crosses the convention ...

and

L-band The L band is the Institute of Electrical and Electronics Engineers (IEEE) designation for the range of Frequency, frequencies in the radio spectrum from 1 to 2 gigahertz (GHz). This is at the top end of the ultra high frequency (UHF) band, at t ...

, each parabolic scanner being illuminated by stacked horn feeds to generate families of multiple beams. There are five S-band transmitter/receivers and these are thought to operate with the lower of the two antennas, while the L-band feeds illuminate the upper scanner array. An

IFF In logic and related fields such as mathematics and philosophy, "if and only if" (often shortened as "iff") is paraphrased by the biconditional, a logical connective between statements. The biconditional is true in two cases, where either both ...

interrogator is incorporated in the system. Three PPI displays are available, one azimuth/range display and two to four additional PPI. MTI is provided in the L - band modules. The whole system is air transportable but requires considerable time and effort to assemble/disassemble. It is being produced by the Chengdu Jin Jiang Electronic System Engineering Company.

Specifications

* D - band * Range: 270 km * Height: 20,000 metres * Azimuth coverage: 360° * Elevation coverage: 0.5°-30° * Accuracy: 500 metre (range) +/- 0.5° (bearing)

References

{{Reflist, 2

External links

Jin Jiang Electronic System Engineering Company
Ground radars Military radars of the People's Republic of China