Monday, 26 September 2011

Introduction – MOSA, IMA, HAMOSA, and IT Virtualization Architecture


Avionic Systems have traditionally been driven by hard real-time requirements, military standard 
network interfaces, rugged processors, and high robustness languages (ex Ada) to satisfy safety and 
security requirements  Size, power, weight, and cost are critical parameters for avionics systems as 
they directly affect mission endurance and mission effectiveness.  The need to leverage COTS 
processing, networking, and software has lead to wide spread use of Modular Open Systems 
Architectures (MOSA) for avionics embedded systems. For a subset of those systems, requiring 
certification, Integrated Modular Avionics (IMA) architectures have been developed leveraging ARINC
653 with time and space partitioning   More recently, the need to support multiple level security 
exchanges between platforms has driven the need for High Assurance MOSA  (HAMOSA) based on 
MILS/MLS technology. Extending the computing environment for connection to the Global 
Information Grid (GIG) places new requirements for interoperability to support Windows and Linux 
applications.

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