Development and Evaluation of a JTRS Waveform for Asset Tracking and Data Relay Applications, 16-9407

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Principal Investigator
Melissa Wallis

Inclusive Dates: 07/01/03 - 06/01/04

Background - The Department of Defense is migrating to a software radio approach to support the next generation of mobile communications with the acquisition of the Joint Tactical Radio System (JTRS). The JTRS will be a secure (encrypted) multi-band, multi-mode, multi-channel software radio family supporting a broad range of requirements. JTRS supports the acquisition and fielding of software defined radios that provide interoperable communications through an internationally endorsed open Software Communications Architecture (SCA). The JTRS will replace older hardware-intensive radios with Software Defined Radios (SDRs), in which software applications provide waveform generation and processing to include encryption, filtering and other major communication functions. A major JTRS tenet is the easy insertion of advanced technology. Abstraction of the software from the hardware allows software modules to be upgraded and new capabilities to be added with minimal impact on hardware. The JTRS software communications architecture and approach to waveform applications enable porting of waveforms across radio platforms.

Approach - At the heart of the technical approach is the development of a software radio testbed system. The testbed hardware suite will be designed and integrated using commercial off-the-shelf (COTS) hardware. The Signal Intercept from Low Orbit (SILO) beacon waveform software will be designed and implemented using the SCA as a set of rules that constrain the system design. The software design will be based on an object-oriented approach using C++, Unified Modeling Language (UML), eXtensible Markup Language (XML) and Common Object Request Broker Architecture (CORBA). Finally, the waveform implementation will be tested on the software-radio test bed to assure the system will reliably meet performance specifications.

Accomplishments - All hardware required for the test bed has been received and is in the process of being assembled. Work has also begun on the Software Design Document (SDD) and the software requirements.

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