Radar P-14PL/5H84APL

Modernization of early-warning VHF radar 5N84A (5N84, 44Zh6 or P-14) offers the best (in terms of efficiency/cost ratio) alternative to restoration or repair of legacy prototypes.

Modernization of 5N84A features:

  • metric band for "counter-Stealth" capability;
  • maximum use of COTS components;
  • option of containerized solution (two 20ft ISO);
  • stable, fail-soft, modular solid-state transmitter;
  • built-in test equipment;
  • no special adjustments required during operation;
  • largely simplified maintenance;
  • engineered for minimum cost of ownership.

As a result of modernization the radar′s detection performance is efficiently improved. Modernized radar features automatic tracking capability as well as data receiving from other radar sensors. Data can be exchanged over a variety of communication channels in approved format. 

Depth of modernization:

The radar’s equipment cabin is fully modernized. Metric band is preserved, however the number of working frequencies is increased from 4 to 200, the capability of instantaneous electronic frequency agility is added. Radar transmitter and receiver feature solid-state components only.

Radar transmitter and receiver feature solid-state components only. The transmitter has a modular design and provides ‘soft-failure’ redundancy: failure of individual module leads to partial performance degradation.

Antenna-mast assembly is equipped with new asynchronous motor drives controlled by frequency inverters.

Modernized 5N84APL radar remains a two-dimensional system and is used to find azimuth and range. Altitude can be obtained by interfacing modernized height-finding radars. Parameters of transmitted signal as well as parameters of signal processing after reception can be set at the operator workstation, secondary processing and tracking are performed at the remote workstation. Both workstations are installed in the equipment cabin in standard configuration.

As an option, ground interrogator can be controlled in auto- and semiautomatic modes with assigning aircraft state identification status. All air situation is automatically recorded with playback capability in passive and interactive modes.

Modernized 5N84APL radar features efficient protection against pulse interference and active jamming. Level of interference is continuously monitored and graphically represented to the operator. Jamming protection is achieved through expansion of the dynamic range of the signal processor and capability of electronic frequency agility. Passive interference is rejected through digital adaptive MTI and generation of clutter map.

Equipment of 5N84APL can be installed on a semitrailer or in two standard sea containers mounted stationary or on a vehicle.




Before modernization

After modernization

 Range of working frequencies, MHz



 Frequency agility:

- method for frequency agility;



- discreet steps;

4 fixed frequencies

200 kHz

- frequency setting accuracy.


±10 kHz

 Types of transmitted probing pulses:

- short pulse;

10 µs

10 µs

- phase shift keyed signals:



                - 13-bit;


13 × 10 µs

                - 28-88 bit.


(28 – 88) × 10 µs

 Transmitter pulse power

700 kW

30 kW

 Capability of instant probing signal power and  structure changes

Not implemented


 Detection range for a target with RCS of 2.5m2, Р=0.5:

- min range


2,7 km

- at altitude of Н=100 m

30 km

37 km

- at altitude of Н=500 m

85 km

105 km

- at altitude of Н=1000 m

110 km

130 km

- at altitude of Н=3000 m

185 km

220 km

- at altitude of Н=10000 m

290 km

340 km

 Detection accuracy:

- range

1000 m

270 m

- azimuth






- range

3500 m

1600 m

- azimuth



 Range of adaptive MTI


0-500 km

 Clutter suppression ratio


> 40 dB

 Dynamic range of receiver and digital signal  processor


> 100 dB

 Automatic control of modernized height-finders



 Number of controlled height-finders


up to 4

 Start-up time

8 min

3 min

 Power consumption

60 kW

up to 40 kW