Electronic Warfare (EW) – ARAT,  Guardrail Common Sensor (GCS)
Precision GPS – Accuracy Support Infrastructure (ASI) for Small Diameter Bomb (SDB),  GPS III 
C4I – Internet Protocol Version 6 (IPv6)

Electronic Warfare (EW)

The EW program area consists of two main projects: the Army Reprogramming Analysis Team (ARAT) and Guardrail. These two projects are described below. 

ARAT – The ARAT was established in 1991 to provide rapid reprogramming of target/threat sensing systems (TSS) that rely on parametric signature data (e.g., radar parameters) for threat identification. The ARAT effort involves multiple Army Commands and provides rapid reprogramming support to all U.S. DoD services and many international partners. This includes the following platforms:

The ARAT monitors the threat environment worldwide on a region-by-region basis to ensure that TSS have the most up-to-date information to detect, classify, and respond to an ever-changing threat environment. ARAT tasks include the following:

• Intelligence flagging model development and maintenance • Systems analysis of threat parameters • Mission Data Set (MDS) development • RF simulation development • MDS IV&V • Unclassified and classified website development & support • U.S. Army MSEWDDS mirror site development & support • Help desk support to the warfighter • Field reprogramming hardware & software solutions • ASE awareness visits • ASE platform training • ASE flight test support • ASE support & test plan development • ASE hardware installation		ARAT Process Diagram

Guardrail Common Sensor (GRCS) – SRI has been providing support to the Army for the RC-12 Guardrail program since the 1970's, primarily providing the PM with technical oversight of the development contractor. Since 1999, SRI has also been providing post-production software support (PPSS) to the airborne portion of GRCS System 2 for CECOM SEC. I2S contributions have included: technical studies and plans, development of sensors, development of operational concepts, development of sensor enhancements, PPSS, and on-site assistance and information visits worldwide.

Precision GPS

Accuracy Support Infrastructure (ASI) for Small Diameter Bomb (SDB) – In the mid-to-late 1990s, SRI developed an Ultra-Wide Area Differential GPS network used to support the EDGE and WAGT programs. This network provided corrections to reduce the residual SIS error to something less than 50 cm.  SRI leveraged off of this technology to create the ASI for the SDB program on the Boeing team. ASI technical tasks include:

• Requirements definition • System design • Hardware and software development • Operational, storage, & transportation environmental test planning & analysis • Security process & documentation • Training and documentation • Field installation & support GPS III – SRI is part of one of the GPS III teams with a focus on technology support including requirements analysis, architecture design, trade studies, and evaluation of technology concepts.
		Precision GPS Results

C4I

Internet Protocol Version 6 (IPv6) – SRI is working with the U.S. Department of Defense (DoD) IPv6 Transition Office, Defense Information Standards Agency (DISA), and the U.S. Army to research and document policy, protocols, architecture, and procedures necessary to transition DoD systems to IPv6.  Current task includes establishing an "IPv6 Capable" product certification for DoD, developing the IPv6 Capable product profile in the DISA Information Standards Registry (DISR), conducting IPv6 and IP security protocol development for DISA, conducting experimentation and simulation studies to develop emerging IPv6 architecture for the U.S. Army; and developing an optimized upgrade path to IPv6 netcentric systems that maintains interoprability with legacy IPv4 systems.