Under the Terra Harvest Program, the DIA has the objective of developing a universal Controller for the Unattended
Ground Sensor (UGS) community. The mission is to define, implement, and thoroughly document an open architecture
that universally supports UGS missions, integrating disparate systems, peripherals, etc. The Controller's inherent
interoperability with numerous systems enables the integration of both legacy and future UGS System (UGSS)
components, while the design's open architecture supports rapid third-party development to ensure operational readiness.
The successful accomplishment of these objectives by the program's Phase 3b contractors is demonstrated via
integration of the companies' respective plug-'n'-play contributions that include controllers, various peripherals, such as
sensors, cameras, etc., and their associated software drivers.
In order to independently validate the Terra Harvest architecture, L-3 Nova Engineering, along with its partner, the
University of Dayton Research Institute, is developing the Terra Harvest Open Source Environment (THOSE), a Java
Virtual Machine (JVM) running on an embedded Linux Operating System. The Use Cases on which the software is
developed support the full range of UGS operational scenarios such as remote sensor triggering, image capture, and data
exfiltration. The Team is additionally developing an ARM microprocessor-based evaluation platform that is both
energy-efficient and operationally flexible.
The paper describes the overall THOSE architecture, as well as the design decisions for some of the key software
components. Development process for THOSE is discussed as well.