نتایج جستجو برای: radar altimetry

تعداد نتایج: 39058  

Journal: :IOP conference series 2022

Abstract Altimetry satellites have an on-board microwave radiometer whose original function is to measure the Tropospheric Wet Delay (TWD) for their main sea level measurement using radar altimeter. The TWD, as it reflects amount of water vapor in atmosphere, could be used derive Precipitable Water Vapor (PWV) which would a good parameter study atmosphere variability, especially Indonesia where...

Journal: :Remote Sensing 2021

Radar altimetry is now commonly used to provide long-term monitoring of inland water levels in complement or for replacing disappearing situ networks gauge stations. Recent improvements tracking and acquisition modes improved the quality retrievals. The newly implemented Open Loop mode likely increase number monitored bodies owing use an a priori elevation, especially hilly mountainous areas. n...

2011
Yuxing LI Mohammad J. Tourian

As a new spatial measuring technic developed in 1970s,altimetry was designed to determine the sea surface height based on spatial technology, electronic technology and microwave technology. It also plays an important role in geodesy and oceanography; meanwhile, it can provide all-weather and repetitious measurements in global region for the studying of variation of SSH, earth gravity field, oce...

2010
G. Schumann G. Di Baldassarre D. Alsdorf P. D. Bates

[1] This paper investigates the potential of low‐cost spaceborne data to approximate longitudinal surface profiles during flood events on large rivers. In February 2000, the Shuttle Radar Topography Mission (SRTM) measured the elevation of most of the Earth’s surface with spatially continuous sampling and an absolute vertical accuracy between 5.6 and 9 m. The vertical error has been shown to ch...

Journal: :Remote Sensing 2021

Total sea level changes from space radar altimetry are mainly decomposed into two contributions of mass addition and volume expansion oceans, measured by GRACE gravimeter Argo float array, respectively. However, the averages altimetry, mass, steric have been usually examined over respective data domains, which different to one another. Errors arise this area inconsistency is rarely discussed in...

Journal: :Remote Sensing 2016
Shuang Yi Qiuyu Wang Le Chang Wenke Sun

The Tianshan mountain range is experiencing a notable environmental change as a result of global warming. In this paper; we adopt multiple remote sensing techniques to examine the diversified geophysical changes in the Tianshan; including glacier changes measured by Gravity Recovery and Climate Experiment (GRACE) and Ice, Cloud, and land Elevation Satellite (ICESat); lake level changes measured...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2000
Mark D. Behn Maria T. Zuber

To assess the utility of laser altimetry for studies in dynamical oceanography, we present a comparison of the Shuttle Laser Altimeter (SLA)-01 and the TOPEX/POSEIDON (T/P) radar altimeter on global and regional scales. We compare all 1.1 million SLA-01 range measurements over the oceans to the CSRMSS95 gridded mean sea surface model and find the overall root mean square (RMS) difference to be ...

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