CryoSat-2 radar altimetry for monitoring freshwater resources of China
نویسندگان
چکیده
منابع مشابه
Retracking CryoSat-2, Envisat and Jason-1 radar altimetry waveforms for improved gravity field recovery
S U M M A R Y Improving the accuracy of the marine gravity field requires both improved altimeter range precision and dense track coverage. After a hiatus of more than 15 yr, a wealth of suitable data is now available from the CryoSat-2, Envisat and Jason-1 satellites. The range precision of these data is significantly improved with respect to the conventional techniques used in operational oce...
متن کاملCryoSat-2 Altimetry Applications over Rivers and Lakes
Monitoring the variation of rivers and lakes is of great importance. Satellite radar altimetry is a promising technology to do this on a regional to global scale. Satellite radar altimetry data has been used successfully to observe water levels in lakes and (large) rivers, and has also been combined with hydrologic/hydrodynamic models. Except CryoSat-2, all radar altimetry missions have been op...
متن کاملGPD+ Wet Tropospheric Corrections for CryoSat-2 and GFO Altimetry Missions
Due to its large space-time variability, the wet tropospheric correction (WTC) is still considered a significant error source in satellite altimetry. This paper presents the GNSS (Global Navigation Satellite Systems) derived Path Delay Plus (GPD+), the most recent algorithm developed at the University of Porto to retrieve improved WTC for radar altimeter missions. The GPD+ are WTC estimated by ...
متن کاملSensitivity Analysis of Brown Model Waveform in Radar Altimetry
In satellite altimetry (radar altimetry), the altimeter emits a pulse, with known power, to the earth surface and receives it back continuously to determine of the sea surface height. The time series of the mean returned power is recorded individually at satellite as the so-called waveform. Analytical model for the waveform is first introduced by Brown, which consists of six parameters: signif...
متن کاملAn Annotated Bibliography: Selected milestones of oceanic radar altimetry leading to finer height precision and the CryoSat heritage
[1] R. K. Moore and C. S. Williams, Jr., "Radar return at near-vertical incidence," Proceedings of the IRE, vol. 45, pp. 228-238, 1957. The first treatment of the impulse response of a radar looking at a quasi-smooth horizontal surface from above, introducing the “beam-limited” and the “pulse-limited” waveforms and their associated radar power equation. The pulse-limited form since then has bee...
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ژورنال
عنوان ژورنال: Remote Sensing of Environment
سال: 2017
ISSN: 0034-4257
DOI: 10.1016/j.rse.2017.08.015