SDDS

Surveillance Data Distribution System

A state of the art solution for providing added value surveillance data handling services.

The EUROCONTROL Surveillance Data Distribution System (SDDS) is a versatile, high-performance communication gateway that provides value-added services for the safe and secure distribution of Surveillance information in (but not limited to) EUROCONTROL’s All-purpose structured surveillance Information exchange (ASTERIX) format.

SDDS enables Air Navigation Service Providers (ANSPs) to exchange surveillance data in an efficient manner, contributing to the reliable and efficient operation of the pan-European ATM network.

Acting as an interface between the external world and the ATC Centres, SDDS protects the ATC systems from deficient data coming directly from sensors or from other surveillance data exchange networks.

Functional overview

ASTERIX Exchange

Checks the surveillance data flows for syntactic and semantic errors at ASTERIX level
ASTERIX Category and Edition Conversion

Filtering

Geographical 2D and 3D filtering, surveillance technology, SSR Mode3/A codes filtering, duplicated messages, BDS-Swap, overload situations

ADS-B Server

Concentrates target reports received by multiple ADS-B Ground Stations into a single source

Interoperability

Through a wide variety of communication protocols

Security

firewall services, separates payload and management flows, segregates inter-centre and intra-centre communications

SDDS use-cases

Inter-centre distribution

Conveys data to ATC Centres and redistributes the output of Surveillance Data Processing Systems.

Intra-centre distribution

Data streams tailoring for different types of consumers (e.g. Area, Approach and Tower Control Units).

International gateway

Allows ANSPs to exchange multiple data flows

Architecture

The SDDS system architecture requires two servers, where each Host runs two (KVM) virtual machines, running software designed to meet all functional and performance requirements.

Performance

Target reports / sec

Connections

Average delays ( 95% cases)

Implementation status

SDDS is operational in 14 Air Traffic Control Centres and around 30 SDDS units are currently deployed in the ECAC Area.

Regulation compliance and certification

SDDS is ED-153 Software Assurance Level (SWAL) 3 compliant and has ISO9001 certification.

EUROCONTROL is working towards addressing the EASA Conformity Assessment.

Support and maintenance

Support and maintenance activities are managed by the SDDS Implementation and Operational Support (SIMOS) Team, based at the EUROCONTROL Headquarters in Brussels, providing direct support to SDDS Users. In turn, SIMOS is supported by an Industrial Partner, which is specifically responsible for documentation, software maintenance and the implementation of new functions.

The SIMOS service does not include hardware or Operating System support.

Licence and fees

The SDDS software and the SIMOS service are currently free of charge to EUROCONTROL Member State Organisations.

The SDDS software is also available to Non-EUROCONTROL Member State Organisations for a fee, but no SIMOS service is available in this case.

Interested in a SDDS licence?

Send us your request via our contact form.

Training and support

SDDS courses are available at the EUROCONTROL Aviation Learning Centre, Luxembourg.

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