The U.S. DoD Joint Tactical Radio System (JTRS) Handheld, Manpack, Small Form Fit (HMS) program1 delivers power efficient, low-cost radio sets for installation in 16 different host platforms ranging from high-performance Manpacks to disposable sensors. Aggressive cost targets are achieved through the use of a modular design resulting in a product line of radio modules that leverage open standards for maximum flexibility.

This paper describes the requirement hierarchy developed for the HMS program, in which requirements flow from the system level to radio sets and then to core radio modules. A requirement management process is discussed where functional and allocated requirement baselines are controlled through a formal change control board to provide guidance and assurance that the final products meet Customer expectations. Metrics are measured against the baselines as indicators of work remaining and expansion of program scope.