Results 291 to 300 of about 92,393 (340)

Evaluation of atmospheric correction algorithms for salt lake water assessment: Accuracy, band-specific effects, and sensor consistency. [PDF]

PLoS One
Liu C, Zhang F, Zhang F, Jim CY, Oke SA, Adam E.   +5 more
europepmc   +1 more source

Urban and socioeconomic disparities in PM_2.5 exposure across 340 Latin American cities. [PDF]

Environ Res Lett
Ascencio EJ, Barja A, Montes-Alvis J, Kephart JL, Gouveia N, Rodriguez DA, Benmarhnia T, Diez Roux AV, Bilal U, Miranda JJ, Carrasco-Escobar G.   +10 more
europepmc   +1 more source

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Resonant satellite transitions in argon

Physica Scripta, 1990
The production of specific Ar+ satellite states has been studied with synchrotron radiation at wavelengths between 300 and 350 A with an effective energy resolution of 20 meV. The specific states studied were the (3P)4p(2P3/2), (1D)4p(2F7/2), and (1D)4p(2P1/2) states.
James A R Samson, Eun-Mee Lee, Y Chung
openaire   +1 more source

Precise time recovery from transit satellites

Radio Science, 1979
An instrument using time signals from the Navy Navigation Satellite System (Transit) to derive precise time referenced to the U.S. Naval Observatory (USNO) master clock is described. The two sources of system time error, receiver detection error and spacecraft timekeeping error, are analyzed.
R. E. Cashion, G. A. Hunt, J. D. Lavanceau   +2 more
openaire   +1 more source

Navy Navigation Satellite System (Transit)

IEEE Aerospace and Electronic Systems Magazine, 1987
The Navy Navigation Satellite System (TRANSIT) has provided 100% system reliability since being declared operational October 11, 1968. TRANSIT continues to carry out its function of precise, reliable, all weather navigation for the United States Navy and nearly 80,000 worldwide commercial users.
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XPS satellites in transition metal oxides

Journal of Electron Spectroscopy and Related Phenomena, 1996
Abstract The core levels of different transition metal oxides have been measured by X-ray photoelectron spectroscopy. All core level lines are accompanied by a complex satellite structure which is similar for all core lines. These satellites originate from shake processes.
B. Mayer, St. Uhlenbrock, M. Neumann
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A Portable Transit Satellite Simulator

Offshore Technology Conference, 1978
ABSTRACT The portable TRANSIT satellite simulator described in this paper can test entire satellite receiver computer systems, from antenna input to the resulting computed fix, simulating any location in the world.
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Observations of transitions in satellite scintillation

Journal of Atmospheric and Terrestrial Physics, 1968
Abstract A sub-auroral region of ionospheric irregularities with a well-defined equatorward boundary produces sharp transitions in the scintillation observed on VHF signals from the beacon satellite BE-B recorded at three New Zealand stations. Triangulation shows that the irregularities are located at heights between 240 km and 600 km, with about ...
A.B. Kaiser, G.F. Preddey
openaire   +1 more source