Results 191 to 200 of about 28,419 (239)
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Lakes Studies from Satellite Altimetry
2010Accurate and continuous monitoring of lakes and inland seas has been possible since 1993 thanks to the success of satellite altimetry missions: TOPEX/POSEIDON (T/P), GFO, JASON-1, and ENVISAT. Global processing of the data of these satellites can provide time series of lake surface heights over the entire Earth at different temporal and spatial scales ...
Cretaux, J-F +5 more
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2017
Like most fields of science over the past century or two, the subject of oceanic tides appears to have progressed through a few major phases that, in hindsight at least, can be readily identified. When observing tides with a satellite altimeter, the problem of aliasing can scarcely be avoided.
Richard D. Ray, Gary D. Egbert
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Like most fields of science over the past century or two, the subject of oceanic tides appears to have progressed through a few major phases that, in hindsight at least, can be readily identified. When observing tides with a satellite altimeter, the problem of aliasing can scarcely be avoided.
Richard D. Ray, Gary D. Egbert
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Satellite Altimetry Applications
MTT-S International Microwave Symposium Digest, 1975This paper provides a brief background of precision satellite altimetry. A description of satellite altimetry concepts and instrumentation is presented. The parameters measured, supporting data, and techniques, as well as physical limitations, are discussed. In addition, results are shown and a variety of applications is emphasized.
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Ice Sheet And Satellite Altimetry
Surveys in Geophysics, 2001Since 1991, the altimeters of the ERS European Satellites allow the observation of 80% of the Antarctica ice sheet and the whole Greenland ice sheet: They thus offer for the first time a unique vision of polar ice caps. Indeed, surface topography is an essential data thanks to its capacity to highlight the physical processes which control the surface ...
Frédérique Rémy +2 more
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2001
Publisher Summary The basic concept of satellite altimetry is to measure the range from the satellite to the sea surface. The altimeter transmits a short pulse of microwave radiation with known power toward the sea surface. The pulse interacts with the rough sea surface and a part of the incident radiation reflects back to the altimeter.
Dudley B. Chelton +4 more
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Publisher Summary The basic concept of satellite altimetry is to measure the range from the satellite to the sea surface. The altimeter transmits a short pulse of microwave radiation with known power toward the sea surface. The pulse interacts with the rough sea surface and a part of the incident radiation reflects back to the altimeter.
Dudley B. Chelton +4 more
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Satellite Altimetry - An Introduction
1981The altimetry papers presented at the symposium show that the basic hypotheses underlying the measurement of sea surface topography have considerable merit, but that much work in both science and spacecraft technology remains to be done before such measurements become routine.
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Geophysical Applications of Satellite Altimetry
Reviews of Geophysics, 1991Publications related to geophysical applications of Seasat and Geosat altimetry are reviewed for the period 1987-1990. Problems discussed include geoid and gravity errors, regional geoid heights and gravity anomalies, local gravity field/flexure, plate tectonics, and gridded geoid heights/gravity anomalies.
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Satellite altimetry using ocean backscatter
IEEE Transactions on Antennas and Propagation, 1972A model for the signal received when satellite altimetry pulses are scattered back by the ocean's surface is postulated and analyzed. The second-order statistics of the complex nonstationary random process appearing at the detector input are graphically and analytically displayed as a function of the sea state.
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Spectral Windows for Satellite Altimetry
2016A satellite altimeter’s waveform is a power spectral density (PSD) estimate obtained from discrete Fourier transforms (DFTs) applied to time series produced by the instrument’s analog-to-digital converter (ADC). All altimeters apply a DFT to the digital sample sequence obtained from each pulse echo to synthesize pulse compression; the PSD of the echo ...
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Satellite Altimetry Applications in the Caspian Sea
2010The Caspian Sea is the largest continental water body on the Earth. Owing to its size and geographical location, the sea is truly a large-scale climatic and ecological indicator. One of the most important parameters of the state of the Caspian Sea is significant interannual sea level changes that puzzle the scientists of many countries.
Kouraev, A. +11 more
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