Navigation Sensors and Systems in GNSS Degraded and Denied Environments (Or How I Learned to Stop Worrying About GPS)
Position, velocity, and timing (PVT) signals from various Global Navigation Systems (GNSS) are used throughout the World. However, the availability and reliability of these signals in all environments has become a subject of concern for both civilian and military applications. Most of the 16 critical infrastructure sectors for the US economy, security, and health are dependent on GPS signals. More than 90% of the US military guided weapons use GPS. Accuracy and other planned improvements for GPS are explained as well as technology approaches for increasing system robustness. International news reports about a successful GPS spoofing attack on a civilian UAV in the USA have only increased concerns over the planned use of UAVs in the national airspace and safety of flight in general. Other examples of the effects of GPS interference and jamming are illustrated in this presentation. This is a particularly difficult problem that requires new and innovative ideas to fill the PVT gap when the data are degraded or unavailable. One solution is to use inertial and/or other sensors to bridge the gap in navigation information and maintain world-wide navigation capability. This presentation summarizes with examples four different methods for combining GPS and other systems to achieve mission success when GPS becomes unavailable.
Event Webpage: https://meetings.vtools.ieee.org/m/44109