We specialize

in design, development, acquisition, and integration
of the most advanced surveillance systems known.


System Interface Modernization (SIM):

The SIM Program will upgrade existing 1960’s serial communication technology to robust, scalable, state of the art Internet Protocol (IP) data distribution methods. SIM will modernize these interfaces by changing the message format and communication protocol used to send surveillance target reports between radars and the users of radar data. Radar communications will be changed from Common Digitizer Model 2 (CD-2) transmitted over dedicated serial links to All Purpose STructured Eurocontrol SuRveillance Information EXchange (ASTERIX) carried over IP networks.

SIM Advantages:

The ASTERIX message format has been designed expressly for Air Traffic Control (ATC) communications. Messages carry additional data elements to better support the increased demands of modern ATC automation systems, including NextGen’s fusion tracking system.

ASTERIX messages provide higher resolution, enabling a more precise aircraft location, therefore leading to more accurate separations between aircraft. IP network systems provide error monitoring, quality of service, straightforward scaling to provide data to multiple destinations, self-healing after failure, and lower cost compared to multiple dedicated serial communication links.

IP network systems are supported by industry-standard tools, training, and software.  Modern computers and NAS systems natively communicate via IP, but must be converted to serial CD-2 to cooperate with legacy NAS systems. The SIM IP/ASTERIX solution eliminates protocol and network conversions, increasing reliability, and reducing equipment and maintenance costs.

Regulus Group and SIM:

The company is providing engineering support to the SIM project. Regulus Group engineers have drafted the initial high-level system designs for the FAA’s inventory of radars and automation systems.

Regulus Group engineers are maturing and validating the SIM program requirements. They are drafting the Enterprise Architecture (EA) views to document how SIM will integrate with the NAS. They are also the primary coordination point between the SIM program office and the various FAA second level engineering organizations to ensure all requirements and constraints are captured, documented, and integrated into SIM design documents.