• • Current research in the field of Global Navigation Satellite System (GNSS) offers great potential to transform our society by providing position and time information anywhere, anytime. Satellite-based navigation systems encompass a variety of applications, including intelligence vehicle technologies, wireless safety communications, and aircraft guidance and control. However, a significant challenge to widespread commercialization of those positioning applications remains in ensuring precision, reliability, and, in particular, safety. As examples, let us consider vehicle fleeting on a highway, person in a situation of immediate rescue, or aircraft approaching to land at an airport. Any misleading information that would result in a significant positioning error presents serious hazard to human health and economic loss. Therefore, performance validation and specifically integrity assurance are critical to the commercialization of safety-sensitive information and transportation systems.
  • • GNSSLab at KAIST concentrates on developing theoretical and experimental techniques to solve complex problems of time and positioning systems. As novel information and transportation applications emerge, the need for a generalized approach to integrity assurance steadily grows. Integrity assurance will play a critical role in the development of any positioning applications and will strongly influence the design and success of such a system. The integrity concept, an outgrowth of aviation research, develops quantitative criteria for system failure based on comprehensive system modeling and real-time monitoring. It can be applied to numerous fields including commercial transportation, autonomous robots, sustained surveillance, and space missions. For information and transportation systems, the integrity monitoring algorithms will be applied to motion coordination between intelligent vehicles, collision avoidance and notification, and emergency warning. For robotics, the monitoring concept will be applied to fault detection and diagnosis of mobile robots. Both theory and experiments will be developed to demonstrate the benefit of integrity validation for ensuring high performance of systems with regard to precision, reliability and safety.


Global Navigation Satellite Systems Laboratory, Department of Aerospace Engineering
KAIST 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Republic of Korea
Tel) +82-42-350-3725 Fax) +82-42-350-5765