In the 2020 time frame, the Global Positioning System (GPS) will be fully modernized, and
other satellite navigation systems will be operational. With an additional layer of fault detection…

The use of differential GPS is becoming increasingly popular for real-time navigation systems.
As these systems migrate to safety-of-life applications (eg precision approach and landing)…

The Wide Area Augmentation System (WAAS) is being deployed by the Federal Aviation
Administration (FAA) to augment the Global Positioning System (GPS). The WAAS will aid GPS …

The Wide Area Augmentation System (WAAS) will provide real‐time differential GPS corrections
and integrity information for aircraft navigation use. The most stringent application of this …

The Wide Area Augmentation System (WAAS) is unlike any previous navigation system
fielded by the FAA. Historically the FAA has implemented relatively simple and distributed …

Advanced RAIM (ARAIM) for vertical guidance has attracted considerable attention both
from integrity providers and receiver manufacturers, due to its potential to achieve worldwide …

There has been resurgent interest in building low Earth orbiting (LEO) constellations of satellites
on a new scale. Their aim is Internet for the world with plans for potentially thousands of …

Civil signals at L2 and L5 frequencies herald a new phase of Global Positioning System (GPS)
performance. Dual-frequency users typically assume a first-order approximation of the …

There has been resurgent interest in building large low Earth orbiting (LEO) constellations
of satellites on a new and bigger scale. Their aim is delivering Internet to the world by …

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