STRENGTH IN ARCHITECTURE
systems. Whereas the reference architecture is an overarching set of options, the objective architecture represents the selections that meet the desired technical and business decisions for the family of systems. Te objective architecture documents the tai- loring and refinement by an organization to meet the missions of the related programs, as well as documentation of the methods to meet the requirements defined in the reference architecture.
At the lowest level of architectural specification is the system architecture, which the procuring organization develops by further refining and tailoring the objective architecture to sat- isfy the performance requirements of a specific system. Te system architecture further guides and constrains the archi- tectural principles and methods that the system developers may use while still adhering to the higher-level organizational objectives. Because the system architecture is focused on archi- tectural principles, it does not prescribe the system design and implementation decisions, leaving flexibility for many potential designs.
TAKING CHARGE
A UH-60M Black Hawk helicopter, right, and a CH-47 Chinook helicopter, both from the 2nd General Support Aviation Battalion, 149th Aviation Regiment Task Force Rough Riders, land in August before inserting paratroopers from 2nd Brigade Combat Team, 82nd Airborne Division, during an aerial response force exercise at Camp Taji Military Complex in Iraq. It is in the government’s best interest to develop an aviation mission systems architecture that will encourage shared capabilities. (U.S. Army photo by Capt. Stephen James, 29th Combat Aviation Battalion)
A reference architecture provides common language and ter- minology, guides the application of technology, supports traceability of requirements to validate future architectures and provides a method to adhere to common standards and patterns. It facilitates the development of cross-platform capabil- ities by constraining the ability to develop unique architectural approaches. Options within the reference architecture apply to all programs within the organization’s influence and include ele- ments such as purpose, principles and standards.
Te objective architecture derives from the reference archi- tecture and represents a way to identify opportunities for commonality across related programs, such as in a family of
CONCLUSION Te JMR-TD is pursuing a series of demonstrations to mature various concepts of open systems. Te final event, the capstone demonstration, begins with anticipated awards in June 2018 and runs through the end of 2020. It will help mature and validate the JCAS concept by determining if multiple related programs can use the same systematic approach to architecture to achieve desired characteristics. In the long term, the requirements to achieve these characteristics, which may provide the basis for a new generation of mission systems, will be encapsulated in a best-of-breed specification that leverages the observations and learning gained through the JMR demonstrations.
Military services develop aviation mission systems from a program- centric perspective. In other words, each program is singularly responsible for satisfying its system performance requirements.
104 Army AL&T Magazine January-March 2018
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