Radar processing unit for Mode S Monopulse Secondary Surveillance Radar


Monopulse Secondary Surveillance Radar (MSSR)
Secondary channel for Primary Surveillance Radar (PSR)
Secondary channel for radar complex (MSSR+PSR)


RBS (modes A/C/1/2)
АDS-В 1090 ES (DO-260B/ED-129)
Receiving and decoding extended 1090 ES squitters by 4 independent channels in accordance with ICAO Annex 10 Vol.IV
Squitters processing and formation of output reports in accordance with EUROCAE ED-129 and RTCA DO-260B


8 output data lines
Output information in accordance with the ASTERIX protocols cat 1, 2 and cat 34, 48
Input ADS-В information in accordance with the ASTERIX protocols cat 21, 23
ASTERIX cat 247 reports that contain versions of all used protocols
Individual user profiles for each category and each data line
Output data ADS-В in accordance with ED-129
Receiving information from PSR in accordance with the ASTERIX protocols cat 34, 48

Construction and features

Ultra-compact processing unit - compact server rack (height 140 cm)
Different operating modes: en-route, airport, combined (en-route + airport)
Analogue or digital outputs: analogue data transfer lines, IP network
Individual configuration of protocol profile for each consumer of flight information
Separated configuration of output information for Secondary channel and ADS-B receiver
Accordance with ICAO Annex 10 Vol. IV,EUROCAE output information, ASTERIX protocols


Diagnostics of failures up to the unit part or interface
Classification of failures: equipment failures and warnings
The ability of connection three terminals
The ability of connection four control indicators
Reception and decoding (ATC mode)
At least 3 intersecting answers with extended ATC information (number, height)
Reception and decoding (RBS mode)
At least 7 intersecting RBS responses
Target tracing (ATC mode)
Available, for periods of antenna rotation 4, 5, 6, 10, 12 sec
Target tracing (RBS mode)
Available, including request and decode mode 1 and 2 responses, for antenna rotation periods of 4, 5, 6, 10, 12 seconds
Controlling the sensitivity level when decoding signals of at least 32 azimuth sectors and at least 16 distance zones in each sector with individual response decoding thresholds.
Means against false tracks generated by reflections of signals and fragmentation of marks from targets (ATC mode)
Means of struggle against phantoms
1st type (C2-SPI) and 2nd kind (due to closely spaced responses)
Means of struggle against phantoms (RBS Mode)
Formed when receiving asynchronous responses
Generation of output messages purposes in accordance with the selected data format
Resolution for targets (ATC Mode)
In accordance with the EURSTD requirements
Resolution for targets (RBS Mode)

Ilya Boguslavsky

Technical Director