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December 2015. Secretary of NSDC of Ukraine have visited manufacturing facilities of “Aerotechnica-MLT”.


May-June 2014. Implementation of Automatic dependent surveillance – broadcast (ADS-B) procedures.


Contact information

12 Baumana str., 03190 Kiev, Ukraine,
Tel: (+38044)-5911575
Fax: (+38044)-5911576
E-mail: marketing@aerotechnica.ua

Our products:


Mobile radar MARS-L

Mars-L_front_field MARS-L_rear_field 

Mobile combined PSR/SSR L-band Radar MARS-L is a ground-based radar system implementing combined operation of primary and secondary channels. Design of transmitter and receiver of MARS-L relies on advanced technology of operation with complex strobing signals and jamming  protection. MARS-L is intended for automatic target detection of aerial objects (AO) at small, average and big altitudes, determination of target current position, locking of AO movement trajectory and AO automatic tracking. MARS-L includes surveillance primary radar channel (PRC), which uses approach of active location with passive response, and secondary radar channel (SRC), which uses approach of location with active response, that work for one common antenna.

Combined operation of primary and secondary channels allows for significant increase in detection range and accuracy at relatively low radiation power. Besides, availability of additional flight information (flight number, altitude, remaining fuel, technical status, etc.) increases flight safety and diminishes the probability of anti-aircraft missile accidental engagement against commercial aircraft.


Mission of MARS-L

  • build-up of radar coverage, air defense combat alert duty in peaceful time (airspace control, monitoring of airspace use, etc.);
  • flight mission assurance in the terminal area;
  • strategic build-up of radar coverage;
  • provision of surveillance and combat information to anti-aircraft missile units, air force units, EW units when conducting combat operations;
  • flight mission assurance of commercial and NATO aviation for joint actions, exercises and operations involving army.

Applications of MARS-L

  • as aerodrome control radar for flight mission assurance units;
  • as radar field gap filler for radar troops;
  • as mobile low-altitude surveillance radar for Land Forces Air Defense;
  • as mobile NATO standardized secondary radar for rapid reaction force peacekeeping operations;
  • as target acquisition and designation radar for prospective anti-aircraft missile systems.

Functions of MARS-L

  • aircraft detection, displaying of position, automatic measurement of range and azimuth from radar primary channel;
  • aircraft interrogation, receiving and displaying replies from radar secondary channel;
  • combining data received from primary and secondary channels;
  • automatic tracking, flight trajectory estimation;
  • acquisition, displaying and processing of air situation from another radar, generation of multi-radar tracks;
  • automatic height-finder control, altitude calculation;
  • automatic distribution of air situation;
  • recording of air situation;
  • semi-automatic topographic referencing of radar position (GPS-based);
  • technical monitoring and diagnostics.


Performance characteristics

 Power consumption

8 kW

 Start-up time:

-       from mains

3 min

-       from power plants

4 – 5 min

 Time of deployment (tearing down) by qualified  personnel

10 min

 Protocol of data acquisition and output


(CAT 001, 002)

 Number of vehicles


 Travel speed:

-       on unpaved roads

25 – 40 km/h

-       on highways

40 – 60 km/h


5000 h


30 min

 Service life

10 years or 6000h

Antenna rotation system

MARS-L is designed with new horn type radiator and additional antennas (side lobe suppression and back lobe suppression antennas) to sufficiently improve the beam pattern.


  • increased number of RF channels;
  • new 5-chanell RF rotary joint;
  • Tx/Rx equipment has modular design of units and subunits;
  • Tx/Rx are solid-state and fail-soft.

Asynchronous pulse interference is completely suppressed by digital signal processing.

Passive interference is rejected through digital MTI and generation of adaptive clutter map. Operating range of MTI is from 0 to 150 km.

Protection against active jammers is implemented through automatic jamming monitoring with displaying of jamming environment on workstation monitor, PSR frequency shifting (250 frequencies with 0.4 MHz steps), wide dynamic range of the PSR receiver and digital signal processing unit.

In primary radar (PR) a complicated sounding signal consisting of smooth signal and phase-shift keyed signals of different range is used. Sequence of high-frequency sound impulses which is formed in digital signal processing block (DSPB) and PR modulator subblock intensifies in PR transmitting system and is emitted into the space by common for PR and SR mirror antenna.Reflected signals are received by the same antenna, are intensified by the PR receiving system and proceed to the DSPB, in which they transform from the analogue form into digital. All further processing (suppression of jamming of different type, extraction and detection of signals reflected from aircrafts (AC) and AC coordinate measuring (azimuth and slant range)) is implemented automatically by special algorithms. 

Work of the secondary radar (SR) is based on the principle of directed emission at the request frequency (1030 MHz) of coded sending of electromagnetic energy pulses into the ambient space. The request pulses are received by the AC transponder and decoded. Through the nondirectional antenna the AC transponder emits coded sequence of electromagnetic energy pulses at the frequency of the response (1090 or 740 MHz) bearing data on number or AC altitude. AC reply signals are received by the ASR antenna, intensified in SR receiving system and proceed to the system of data digital processing in which they transform from the analogue form into digital. Decoding of response signal is done in the DSP block by special algorithms. Decoded information received from AC is identified with the coordinate information of PR and is displayed on the AWP observation monitor.

Technical specifications


PSR channel

SSR channel

 Operating frequency range

1250MHz – 1350MHz


1030 MHz – interrogation,

1090 MHz – reply,

Eastern IFF (UVD):

740 MHz – reply

 Frequency adjustment

250 frequencies, electronic

 Coverage area:

-    by azimuth



-    by range

110 km

150 km

-    by elevation

0.5° - 28°

0.5° - 28°

-    min. range

 1500 m

 1500 m

 Refresh rate

10; 20 s

10; 20 s


-    range

 150 m

 200 m

-    azimuth



-    by range

 250 m

 150 m

-    by azimuth



 Track capacity


 Transmitter pulse power

 1.8±0.2 kW

 0.8±0.2 kW

 Probing signal types and duration:

interrogation –

0.8 µs

response –

0.45 µs

-    └╠ signal

1.5 µs

-    PSK-13

19.5 µs

-    PSK-42

63.0 µs