Results 201 to 210 of about 1,701 (232)

The weak land carbon sink hypothesis. [PDF]

Sci Adv
Randerson JT, Li Y, Fu W, Primeau F, Kim JE, Mu M, Hoffman FM, Trugman AT, Yang L, Wu C, Wang JA, Anderegg WRL, Baccini A, Friedl MA, Saatchi SS, Denning AS, Goulden ML.   +16 more
europepmc   +1 more source

InSAR data for detection and modelling of overexploitation-induced subsidence: application in the industrial area of Prato (Italy). [PDF]

Sci Rep
Medici C, Del Soldato M, Fibbi G, Bini L, Confuorto P, Mannori G, Mucci A, Pellegrineschi V, Bianchini S, Raspini F, Casagli N.   +10 more
europepmc   +1 more source

Radar Oceanography

, 2008
This chapter details the basics of radar backscattering over a rough surface (such as the sea) as well as the sea surface mapping by a synthetic aperture radar. Nonlinear phenomena involved in the sea SAR mapping, from the intrumental as well as hydrodynamic points of view, are detailled.
René Garello
exaly   +5 more sources

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An Instantaneous-Frequency Filtering Technique for High-Frequency Radar Oceanography

IEEE Journal of Oceanic Engineering, 2006
High-frequency (HF) radar systems are remote sensing tools that can be used to measure oceanographic parameters. Problems can occur when using the conventional periodogram (PG) method for computing power spectral estimates from backscattered radar signals.
Lucy R Wyatt
exaly   +2 more sources

Multibeam synthetic aperture radar for global oceanography

IEEE Transactions on Antennas and Propagation, 1979
A single-frequency multibeam synthetic aperture radar concept for large swath imaging desired for global oceanography is evaluated. Each beam illuminates a separate range and azimuth interval, and images for different beams may be separated on the basis of the Doppler spectrum of the beams or their spatial azimuth separation in the image plane of the ...
exaly   +2 more sources

HF radar oceanography [PDF]

, 1985
The development of a 26MHz pulsed Doppler radar system for remote sensing of ocean surface conditions is described. This radar obtains Doppler spectra of echoes from ocean waves within the range 10-40 km from the shore. From these Doppler spectra it is possible to estimate oceanographic parameters such as sea state, wind speed, wind direction, radial ...
McGregor, J. A.
openaire   +3 more sources

Workshop on Hf Radars for Coastal Oceanography [PDF]

, 2001
Abstract : The long-term goal is to begin an annual workshop series on HF radars that promotes and facilitates interactions among HF radar engineers, scientists and users and publishes new developments with the goal of making HF radars an acceptable and reliable tool for oceanographic applications.
Graber, Hans C., Paduan, Jeffrey D.
openaire   +3 more sources

A study on skywave-surfacewave hybrid networking technique for HF oceanography radar

OCEANS 2014 - TAIPEI, 2014
HF over the horizon radar can be divided into sky wave radar and the surface wave radar according to the radio propagation mode. As a new mode, HF hybrid sky-surface wave radar is composed of the ionosphere reflection propagation mode and the surface wave receiving mode.
Yan Songhua
exaly   +2 more sources

Review article Synthetic aperture radar (SAR) frequency and polarization requirements for applications in ecology, geology, hydrology, and oceanography: A tabular status quo after SIR-C/X-SAR

International Journal of Remote Sensing, 1997
Abstract The Spaceborne Imaging Radar-C, X-Band Synthetic Aperture Radar (SIR-C/X-SAR) was the first multi-frequency and multi-polarization SAR system to be launched into space. SIR-C/X-SAR imaged over 300 sites around the Earth returning 143 terabits of data.
C. C. Schmullius, D. L. Evans
exaly   +2 more sources

Satellite oceanography: Radar images of the sea bed

Nature, 1985
exaly   +2 more sources