Přejít na obsah stránky | Klávesové zkratky | Hlavní strana | Mapa stránek | Vyhledávání | Přejít na hlavní navigační menu

ADS-B Automatic Dependent Surveillance - Broadcast

Civil Use
Award Winning

ADS-B (Automatic Dependent Surveillance - Broadcast) is a surveillance data acquisition system when aircraft transponder with extended squitter feature automatically provides data acquired from aircraft resources. These data contain aircraft identification, position, speed and other useable information.

In contrast to commonly used surveillance technologies, when the ground-based radar transmits interrogation signals and then processes responses from airborne transponder for position acquisition, the ADS-B extended squitter equipped aircraft transponder transmits information messages periodically. ADS-B messages are transmitted even when it is not known, which user receives it and without any reception confirmation or response.  Being an automatic system, there is no requirement on any activity from aircraft crew or from flight controller that uses delivered information. Transmitted surveillance information comes from the aircraft navigation system and the content depends on transponder’s capability.

Aircraft transponder uses amplitude modulation of carrier frequency and message bits are coded using PPM (Pulse Position Modulation).


Supported downlink formats:

  • DF17 (ADS-B report)
  • DF18 (TIS-B report)
  • DF4,5 (Surveillance altitude/identity reply)
  • DF11 (All-call reply)
  • DF20, 21 (Comm-B altitude/identity reply)
Main Features
  • Compact solution
  • Variability - open modular architecture, solution flexibility
  • Low power consumption
  • Long range, up to 250NM (antenna system dependent)
  • Default output formats: Asterix Cat. 21, Cat. 23, raw data and HDLC outputs
  • Possibility of integration  with other systems: MSSR, etc.
System Description
  • ADS-B basic receiver kit is typically designed for installation in 19” rack.
  • TFT display is optionally integrated in the device.
  • Device setup and basic parameters diagnostics is available through keyboard and display. Diagnostics display also contains list of actual targets including data acquired from BDS registers.
  • Configurations without diagnostics display in the basic station use external computer (LCMS) with relevant SW equipment for diagnostics.
  • Optionally, the configuration of ADS-B receiver is intended for installation in a rack located in outdoor environment. For this configuration it is supposed input power supply 12V or 24V DC for possibility to supply it from batteries, which can be charged by solar cells.
  • Output LAN interface is connectable to optical converter, modem and/or device for data transmission using a satellite connection.

Specification and Performance


Operation Range: Up to 250 NM (dependent on used antenna system)
Target Capacity: >500
Position update rate: < 0.5 s

Antenna types

Omni directional: 5 dBi, 9 dBi gain

180° 3 dB, 12 dBi or 60° 3 dB, 16 dBi


Noise figure: < 1 dB
Gain: 24 dB
Dimensions: 150 mm × 110 mm × 48 mm


Operating Frequency: 1090 MHz
Bandwidth 10 MHz ± 2 MHz
Sensitivity -91 dBm
Dynamic Range: 70 dB
Band width: 10 MHz ± 2 MHz (3 dB)


Carrier Frequency: 1090 MHz

Time Reference System

TXCO for relative timing; GPS (Galileo) clock for absolute timing
Clock 100 MHz
L1 frequency 1575.42 MHz
Accuracy < 1 µs (with 99% probability)


Operation Data: Ethernet 100BaseT, ASTERIX cat 21 and raw data HDLC interface
Local Console: V.24, 9600 bit/s

Power Supply

Voltage: 85 to 264 VAC, 47 - 63 Hz (12 V, 24 DC optional)
Consumption: < 40 W ( two channels configuration with LCD display and site monitor )


Temperature: -30 °C .. +70 °C
Humidity: Up to 95 % not condensing

Site monitor

The site monitor is an optional part of the ADS-B receiver, or operates as a separate block
RF characteristic: ICAO Annex 10 compliant Downlink
Frequency: 1090 MHz
Output power: Controlled -63 dBm ..0 dBm in steps by 0.5 dBm
Interface: Console, V.24 (RS-232) or Ethernet BaseT (IEEE 802.3) UDP IP V4

Installation options

CMS control post
Radar Data Monitor
Custom turn-key project



modernisation of OPRL-4 radar (PSR/PAR)


130 sets of receivers for the MPR-3D

Lithuanian Republic

modernisation of 4 sets of P-18 radars (PSR)


modernisation of the RSP-10 radar (PSR)

1 set of MSSR-1 Radar

3 sets of RL-2000 Radars

3 sets of PAR Radars


2 sets of RL-2000 / MSSR-1

modernisation of RSP-10 radar (PSR)

installation of 3 sets of ATC system


modernisation of 3 sets of RP-3G (PAR)

Russian Federation

1 set of PAR-E radar

modernisation of 2 sets of RP-5G (PAR)


1 set of RL-2000 / MSSR-1 Radar

South Korea

2 sets of MSSR-1 Radars


modernisation of 3 sets of PSR radars


modernisation of 3 sets of ASR NEC radars and delivered ATC systems

1 set of collocated RL-2000 / MSSR-1 Radar

Republic of Indonesia

6 sets of MSSR-1 Radars

1 set of RL-2000 / MSSR-1 Radar


14 sets of RL-2000 / MSSR-1 Radars

9 modernisations of PAR-1

1 modernisation of ARSR radar (L-band and delivered ATC system)


1 set of MSSR-1 Radar

Equatorial Guinea

5 sets of RL-2000 / MSSR-1 Radars

1 set of RL-2000 Radar


1 set of RL-2000 / MSSR-1 Radar


1 set of MSSR-1 Radar


2 sets of  RL-2000 / MSSR-1 Radars

4 sets of MSSR-1 Radars

Czech Republic

4 sets of RPL-2000 radars (RL-2000 / MSSR-1 / PAR-E)

2 sets of RL-2000


modernisation of 3 sets of PSR/SSR/PAR radars


1 set of collocated RL-2000/MSSR-1 radar

3 sets of MSSR-1 radars