Interconnected pore cell in appropriately chosen porous media can help to enhance their
sound absorption performance. Acoustic absorbing foam materials were produced from …

Deep signal fading due to ionospheric scintillation severely impacts global navigation
satellite system (GNSS)‐based applications. GNSS receivers run the risk of signal loss …

Strong ionospheric scintillation due to electron density irregularities inside the ionosphere is
commonly observed in the equatorial region during solar maxima. Strong amplitude …

GPS technology is essential for future intelligent air transportation systems such as the Next
Generation Air Transportation System (NextGen) of the United States. However, observed …

Growing activity in the Arctic calls for high integrity navigation in this region. This can be
achieved using Global Navigation Satellite Systems (GNSS) in conjunction with Satellite …

Satellite-based augmentation systems (SBAS s) are designed to enhance the performance
of standard global navigation satellite system (GNSS) positioning. SBASs improve the …

Abstract The Wide Area Augmentation System (WAAS) achieved Initial Operating Capability
(IOC) in July 2003. At IOC, WAAS had 25 reference stations in the Conterminous United …

An opportunistic advanced receiver autonomous integrity monitoring (OARAIM) algorithm for
unmanned aerial vehicle (UAV) navigation is developed. This algorithm fuses ambient …

Deep and frequent Global Positioning System (GPS) signal fading due to strong ionospheric
scintillation is a major concern for GPS-guided aviation in equatorial areas during high solar …

Deep signal fading due to ionospheric scintillation may cause loss-of-lock on one or more
satellites in GNSS receiver tracking loops, which can degrade the navigation availability of …