Results 141 to 150 of about 2,019,394 (320)

GPS-aided gravimetry at 30 km altitude from a balloon-borne platform [PDF]

A balloon-borne experiment, flown at 30 km altitude over New Mexico, was used to test dynamic differential Global Positioning System (GPS) tracking in support of gravimetry at high-altitudes.
Evans, Alan G., Lazarewicz, Andrew R.
core   +1 more source

Bioclimatic, demographic and anthropogenic correlates of grizzly bear activity patterns in the Greater Yellowstone Ecosystem

Oikos, EarlyView.
Plasticity of diel activity rhythms may be a key element for adaptations of wildlife populations to changing environmental conditions. In the last decades, grizzly bears Ursus arctos in the Greater Yellowstone Ecosystem (GYE) have experienced notable environmental fluctuations, including changes in availability of food sources and severe droughts ...
Aurora Donatelli, Mark A. Haroldson, Justin G. Clapp, Paolo Ciucci, Frank T. van Manen   +4 more
wiley   +1 more source

Monitoring the Effect of Weed Encroachment on Cattle Behavior in Grazing Systems Using GPS Tracking Collars. [PDF]

Animals (Basel), 2023
Bretas IL, Dubeux JCB, Cruz PJR, Queiroz LMD, Ruiz-Moreno M, Knight C, Flynn S, Ingram S, Pereira Neto JD, Oduor KT, Loures DRS, Novo SF, Trumpp KR, Acuña JP, Bernardini MA.   +14 more
europepmc   +1 more source

Precise near-earth navigation with GPS: A survey of techniques [PDF]

The tracking accuracy of the low earth orbiters (below about 3000 km altitude) can be brought below 10 cm with a variety of differential techniques that exploit the Global Positioning System (GPS). All of these techniques require a precisely known global
Wu, J., Wu, S. C., Yunck, T. P.
core   +1 more source

On the spatial clustering of behavioural phenotypes: matching movement tactics with landscape structure in a large herbivore

Oikos, EarlyView.
In the wild, individuals consistently differ in movement and space use behaviours, depending on their personality. This variation can lead to personality–habitat associations and spatial structuring, potentially generating individual niche segregation.
Inès Khazar, Nadège C. Bonnot, A. J. Mark Hewison, Nathan Ranc, Arnaud Bonnet, Yannick Chaval, Bruno Lourtet, Nicolas Morellet   +7 more
wiley   +1 more source

Parameter-Free State Estimation Based on Kalman Filter with Attention Learning for GPS Tracking in Autonomous Driving System. [PDF]

Sensors (Basel), 2023
Jin XB, Chen W, Ma HJ, Kong JL, Su TL, Bai YT.   +5 more
europepmc   +1 more source

BACK TO KATZ: REASONABLE EXPECTATION OF PRIVACY IN THE FACEBOOK AGE [PDF]

, 2010
Part I of this Note discusses the evolution of Fourth Amendment jurisprudence in reaction to advancing technology, the Supreme Court and circuit courts’ disposition in dealing with electronic “beeper” tracking (the technology that predated GPS), and the ...
Plourde-Cole, Haley
core   +1 more source

Subsurface Investigations of Cryo‐Hydrogeological Features in a High Arctic Catchment Under Transition

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT In this study, the internal structure and seasonal variations of cryo‐hydrogeological features were investigated in the Fuglebekken catchment, located near the Polish Polar Station Hornsund in Svalbard. Over a few years, rising air temperatures and intensified water circulation have significantly altered the distribution, extent, and state of ...
Wawrzyniak Tomasz, Oryński Szymon, Marciniak Artur, Osuch Marzena   +3 more
wiley   +1 more source

A glimpse into the foraging and movement behaviour of Nyctalus aviator; a complementary study by acoustic recording and GPS tracking. [PDF]

R Soc Open Sci, 2023
Niga Y, Fujioka E, Heim O, Nomi A, Fukui D, Hiryu S.   +5 more
europepmc   +1 more source

Navigation system and method [PDF]

, 1984
In a global positioning system (GPS), such as the NAVSTAR/GPS system, wherein the position coordinates of user terminals are obtained by processing multiple signals transmitted by a constellation of orbiting satellites, an acquisition-aiding signal ...
Sennott, J. W., Taylor, R. E.
core   +1 more source