Navigation Services

GPS Policy - GPS Evolutionary Architecture Study (GEAS)

Policy

• PNT
• National PNT Engineering Forum
• Joint Program Office
• GPS Modernization
• GPS Evolutionary Architecture Study (GEAS)
• Selective Availability
• Presidential Policy

The GPS Evolutionary Architecture Study (GEAS) panel was formed to define and evaluate Global Navigation Satellite System (GNSS)-based architectures to provide robust localizer performance with vertical guidance (LPV)-200’ service worldwide circa 2020-2025. The approach for this study is to define the most optimal and cost effective distribution of signal fault monitoring responsibility between the space, ground, and user segment. The corollary objectives for GEAS are as follows:

• Assess capability of modernized GPS to simplify fault detection and provide an alternate broadcast channel
• Provide a clear path to worldwide autoland capability
• Provide reasonable architecture for military aviation within NAS
• Enable a smooth integration of Galileo in the user equipment
• Facilitate constructive interaction with national efforts coordinated by the U.S. Department of Defense’s Navigation Security Space Organization (NSSO) and the Department of Transportation’s Research and Innovative Technology Administration (RITA)

The GEAS panel consists of experts from the Federal Aviation Administration (FAA), Department of Transportation (DOT), GPS-Wing (GPS-W), National Security Space Office (NSSO), Jet Propulsion Laboratory (JPL), academia (Stanford University, Ohio University, and Illinois Institute of Technology), MITRE, Zeta, and government support contractors. The GEAS panel is co-chaired by Professor Per Enge (Stanford University) and Deane Bunce (FAA).