Fault detection and exclusion (FDE) is significant for integrity monitoring of GNSS positioning autonomous systems with navigation requirements. Moreover, the urban canyon scenario introduces additional challenges to existing FDE monitoring, causing missed or false alarms, due significantly increased percentage fault measurements. This paper proposed a sliding window aided based on factor graph...

Submarine canyons have been studied to a very limited extent in spite of their important biological roles as hotspots of secondary production and organic matter conduits between the shelf and the deep sea. The heterogeneity and rugged terrain of submarine canyons makes them difficult to sample using traditional means such as trawling, however there has be a great deal of success in using ROVs t...

Continental margins are dynamic, heterogeneous settings that can include canyons, seamounts, and banks. Two of the largest canyons in the world, Zhemchug and Pribilof, cut into the edge of the continental shelf in the southeastern Bering Sea. Here currents and upwelling interact to produce a highly productive area, termed the Green Belt, that supports an abundance of fishes and squids as well a...

Arizona sycamore (Platanus wrightii: Platanaceae) is a riparian tree of the southwestern United States and adjacent Mexico. It is failing to reproduce in certain canyons where mature, seed-producing trees of this species occur. Three hypotheses were tested to explain this reproductive failure: I) the presence of domestic cattle prevents reproduction, 2) seeds produced in certain canyons are inv...

In the last decade, new strategies have been developed to reduce air pollution levels without changing emissions. In this work we analyze and compare the impact of two of them: the use of photocatalytic materials on the streets of cities, and the introduction of trees in the urban canyons. Differently than previous studies that focused mainly on the microscale, here we focus on the mesoscale. S...

Different revolutionary applications, like the unmanned autonomous systems, require a highly precise positioning with centimetre-level accuracies. And real-time kinematic (RTK) GNSS stands chance to these potential applications. RTK can provide in open-sky or suburban environments. However, performance is limited deep urban canyon severe multipath and cycle slip effects. The measurements noise ...