Networked Positioning of Unattended Ground Sensors using JTRS radios

Unattended sensors are an important element of the Future Combat System (FCS) architecture. These include Unattended Ground Sensors (UGS), autonomous weapons such as the Intelligent Munition System (IMS) and miniaturized Unmanned Ground Vehicles (UGV) and Air Vehicles (UAVs). All of these applications have a requirement to use GPS for positioning. A “catch 22” exists between GPS security policy and operational security doctrine in cases where the system is left unattended or is not recovered (munitions excepted). While security policy requires a PPS solution, security doctrine states that PPS devices cannot be left unattended. Under this SBIR effort, NAVSYS proposes to develop a networked GPS positioning solution for UGS based on our patented TIDGET technology. The TIDGET uses COTS GPS components to capture a snapshot of GPS data which will be transmitted over the FCS network to an attended location with a JTRS radio where the GPS crypto processing can be performed. This allows a PPS solution to be calculated for the UGS without requiring crypto equipment to be left unattended in the field. We shall prepare a design for a Phase II system to demonstrate this capability and will provide simulation results to show the expected performance and network loading.