Results 1 to 10 of about 624,911 (207)

Research on Radio Altimetry in Urban Environments Based on Electromagnetic Simulation Echo Modeling Technology [PDF]

open access: yesSensors
As the low-altitude economy develops rapidly, precise radar altimetry is crucial for ensuring the safety and reliability of drone flights. In the context of urban radio detection, the presence of numerous buildings and ground surfaces gives rise to ...
Jian Xiong   +4 more
doaj   +2 more sources

Evaluation of the Performances of Radar and Lidar Altimetry Missions for Water Level Retrievals in Mountainous Environment: The Case of the Swiss Lakes

open access: yesRemote Sensing, 2021
Radar altimetry is now commonly used to provide long-term monitoring of inland water levels in complement to or for replacing disappearing in situ networks of gauge stations.
Jean-Francois Cretaux   +2 more
exaly   +3 more sources

Antarctic Ice Sheet and Radar Altimetry: A Review [PDF]

open access: yesRemote Sensing, 2009
Altimetry is probably one of the most powerful tools for ice sheet observation. Our vision of the Antarctic ice sheet has been deeply transformed since the launch of the ERS1 satellite in 1991. With the launch of ERS2 and Envisat, the series of altimetric observations now provides 19 years of continuous and homogeneous observations that allow ...
Frédérique Rémy
exaly   +3 more sources

Niger discharge from radar altimetry: bridging gaps between gauge and altimetry time series [PDF]

open access: yesHydrology and Earth System Sciences, 2019
The Niger River represents a challenging target for deriving discharge from spaceborne radar altimeter measurements, particularly since most terrestrial gauges ceased to provide data during the 2000s. Here, we propose deriving altimetric rating curves by
S. Schröder   +7 more
doaj   +5 more sources

Impact of Surface Soil Moisture Variations on Radar Altimetry Echoes at Ku and Ka Bands in Semi-Arid Areas

open access: yesRemote Sensing, 2018
Radar altimetry provides information on the topography of the Earth surface. It is commonly used for the monitoring not only sea surface height but also ice sheets topography and inland water levels.
Christophe Fatras   +2 more
exaly   +3 more sources

Evaluation of historic and operational satellite radar altimetry missions for constructing consistent long-term lake water level records [PDF]

open access: yesHydrology and Earth System Sciences, 2021
A total of 13 satellite missions have been launched since 1985, with different types of radar altimeters on board. This study intends to make a comprehensive evaluation of historic and currently operational satellite radar altimetry missions for lake ...
S. Shu   +8 more
doaj   +1 more source

Joint analysis of coastal altimetry and high-frequency (HF) radar data: observability of seasonal and mesoscale ocean dynamics in the Bay of Biscay [PDF]

open access: yesOcean Science, 2018
Land-based coastal high-frequency (HF) radar systems provide operational measurements of coastal surface currents (within 1–3 m depth) with high spatial (300 m–10 km) and temporal ( ≤ 1 h) sampling resolutions, while the ...
I. Manso-Narvarte   +4 more
doaj   +1 more source

Satellite radar altimetry for monitoring small rivers and lakes in Indonesia [PDF]

open access: yesHydrology and Earth System Sciences, 2015
Remote sensing and satellite geodetic observations are capable of hydrologic monitoring of freshwater resources. Although satellite radar altimetry has been used in monitoring water level or discharge, its use is often limited to monitoring large rivers (
Y. B. Sulistioadi   +7 more
doaj   +1 more source

Combining satellite radar altimetry, SAR surface soil moisture and GRACE total storage changes for hydrological model calibration in a large poorly gauged catchment [PDF]

open access: yesHydrology and Earth System Sciences, 2011
The availability of data is a major challenge for hydrological modelling in large parts of the world. Remote sensing data can be exploited to improve models of ungauged or poorly gauged catchments.
C. Milzow   +2 more
doaj   +1 more source

Time-evolving mass loss of the Greenland Ice Sheet from satellite altimetry [PDF]

open access: yesThe Cryosphere, 2014
Mass changes of the Greenland Ice Sheet may be estimated by the input–output method (IOM), satellite gravimetry, or via surface elevation change rates (dH/dt).
R. T. W. L. Hurkmans   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy