Results 91 to 100 of about 14,761 (217)
Ionospheric Clutter Model for HF Sky-Wave Path Propagation with an FMCW Source
International Journal of Antennas and Propagation, 2019 A theoretical model of the sky-wave path propagation with frequency modulated continuous wave (FMCW) source for high frequency (HF) radar is proposed in this paper.
Xuguang Yang +3 more
doaj +1 more source
Investigation of ocean wind estimating technique using wave data and SMB method [PDF]
In the ocean surface, there are many kinds of currents due to tides, wind, wave as well as tsunamis.\ud Especially, wind-driven currents may be important for coastal currents.
Nomura, K., Watanabe, K.
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Airborne or spaceborne electromagnetic systems used to detect subsurface features are discussed. Data are given as a function of resistivity of ground material, magnetic permeability of free space, and angular frequency.
core +1 more source
Mapping ionospheric backscatter measured by the SuperDARN HF radars - Part 1: A new empirical virtual height model [PDF]
, 2008 Accurately mapping the location of ionospheric backscatter targets (density irregularities) identified by the Super Dual Auroral Radar Network (SuperDARN) HF radars can be a major problem, particularly at far ranges for which the radio propagation paths ...
Chisham, G., Sofko, G. J., Yeoman, T. K.
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Remote sensing of sea state by laser altimeters [PDF]
The reflection of short laser pulses from the ocean surface was analyzed based on the specular point theory of scattering. The expressions for the averaged received signal, shot noise and speckle induced noise were derived for a direct detection system ...
Gardner, C. S., Tsai, B.
core +1 more source
Ionosphere/microwave beam interaction study [PDF]
A solar power satellite microwave power density of 20mw sq cm was confirmed as the level where nonlinear interactions may occur in the ionosphere, particularly at 100 km altitude.
Duncan, L. M., Gordon, W. E.
core +1 more source
Persepsi pelajar sarjana muda kejuruteraan elektrik terhadap program latihan industri, Kolej Universiti Teknologi Tun Hussein Onn [PDF]
, 2002 Kajian ini dijalankan bertujuan untuk mengetahui persepsi Pelajar Sarjana Muda Kejuruteraan Elektrik Terhadap Program Latihan Industri, KUiTTHO berdasarkan kepada 4 faktor iaitu kesesuaian penempatan program latihan industri, kesesuaian pendedahan ...
Mohamad Nur, Hanirah
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Wind Speed and Direction Mapping with HF Radar
Remote SensingHF radar systems are used in many parts of the world as a part of operational coastal ocean observing systems. Their primary product is surface current mapping from the coast to a range determined by radio frequency and environmental conditions ...
Lucy R. Wyatt, John J. Green
doaj +1 more source
Design considerations of a proposed UK VHF radar [PDF]
, 1983 The major features of a proposed UK VHF radar for meso-, strato-, and tropospheric studies are discussed.
Hall, A. J.
core +1 more source
Preliminary studies of electromagnetic sounding of cometary nuclei [PDF]
The internal structure of a comet could be determined with a spacecraft borne electromagnetic sounder. A dielectric profile of the comet could be produced in direct analogy with terrestrial glacier and ice sheet sounding experiments.
Bednarczyk, S. +3 more
core +1 more source