نتایج جستجو برای: radar altimetry

تعداد نتایج: 39058  

Journal: :Advances in Space Research 2021

In 2018 we celebrated 25 years of development radar altimetry, and the progress achieved by this methodology in fields global coastal oceanography, hydrology, geodesy cryospheric sciences. Many symbolic major events have these developments, e.g., Venice, Italy, 15th (2006) 20th (2012) more recently, 2018, Ponta Delgada, Portugal, Years Progress Radar Altimetry. On latter occasion it was decided...

2004
M. J. Fernandes C. Lázaro A. M. P. Santos P. Oliveira

This study focuses on the characterisation of the northeast Tropical Atlantic region (3oN ≤ φ ≤ 30oN, 40oW ≤ λ ≤ 10oW) in terms of the main ocean circulation, sea surface temperature and associated phytopigment concentration patterns and their seasonal and interannual variability using multisensor remote sensing data. The data include radar altimetry from ERS-2 and Topex/Poseidon used to derive...

2007
Sang-Ho Baek C. K. Shum Hyongki Lee Zhong Lu Reinhard Dietrich Michael Bäßler

The knowledge of ocean tides underneath permanently or seasonally sea ice covered ocean and ice shelves over Antarctica, is largely unknown. Significant amount of West Antarctic ice sheet melt is through the mechanism of basal melting and due to turbulent tidal mixing. Knowledge of the ice shelf grounding lines and their extent, are critical to accurately quantify ice sheet mass balance, and oc...

Journal: :Remote Sensing 2021

High temporal and spatial resolutions are the key advantages of global navigation satellites system-reflectometry (GNSS-R) technique, while low precision instabilities constrain its development. Compared with conventional Ku/C band nadir-looking radar altimetry, GNSS-R code-level altimetry is restricted by smaller bandwidth lower transmitted power signals. Fortunately, modernized GNSS broadcast...

Journal: :Frontiers in Earth Science 2021

Satellite radar altimetry has made unique contributions to global and coastal gravity field recovery. This paper starts with a general introduction followed by the progress of satellite technology. Then, methods marine recovery dominating models are described briefly. Finally, typical compared shipboard measurements evaluate their accuracies in offshore regions China. The root mean squares devi...

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