Mobile Ad hoc Networked GPS for Robust Positioning

In Phase I, IAI has developed a novel algorithm that uses a network of GPS receivers to improve the position accuracy of the nodes even when very limited or no differential GPS infrastructure is available. Our key innovation lies in modeling the temporal characteristics of DGPS correction in order to tolerate long latencies and leveraging relative GPS positioning data available to each of the platforms using the underlying ad-hoc network. To further avoid position degradation due to latency and satellite blockage and for continuous reliable position estimate we integrate GPS position data with INS. In phase II, after developing a hardware prototype of integrated INS/GPS we will build a small network of INS/GPS nodes to evaluate our algorithm in a live test. We will also develop a Hardware In the Loop simulation that allows IAI to test and evaluate the scalability of its algorithm and hardware in a large network with a fraction of the budget of an all “physical node” test. The specific application is the ARMY One Tactical Engagement Simulation System (OneTESS), engagement centric test and training program where soldier and platform position estimates are required with high accuracy for target-shooter pairings, weapons effects, and engagement resolution.