Results 221 to 230 of about 436,480 (263)

Airborne Lidar Altimetry in support of Radar Altimetry

2016
In a series of experiments between 2011 and 2016, in the Gulf of Mexico and off the coast of California, directional wave field and the sea surface height anomaly (SSHA) measurements were collected by the Scripps Modular Aerial Sensing System (MASS) waveform scanning lidar.
Melville, Ken, Lenain, Luc
openaire   +1 more source

Radar Altimetry and Acoustic Prediction

1991
An evaluation of the PARQUES acoustic propagation model to take into account the oceanic mesoscale variability as observed during the ATHENA experiment and an assessment of the GEOSAT altimeter for observing this variability and predict acoustic propagation are presented. The ATHENA experiment took place in summer 1988 in the north East Atlantic around
Christophe Boissier, Hubert Bouxin
openaire   +1 more source

Slope correction for ocean radar altimetry

Journal of Geodesy, 2014
We develop a slope correction model to improve the accuracy of mean sea surface topography models as well as marine gravity models. The correction is greatest above ocean trenches and large seamounts where the slope of the geoid exceeds 100  $$\upmu $$
David T. Sandwell, Walter H. F. Smith
openaire   +1 more source

Daily River Discharge Estimates by Merging Satellite Optical Sensors and Radar Altimetry Through Artificial Neural Network

IEEE Transactions on Geoscience and Remote Sensing, 2019
Thanks to the large number of satellites, the multimission approach is becoming a viable method to integrate measurements and intensify the number of samples in space and time for monitoring the earth system.
A. Tarpanelli, E. Santi, M. Tourian, Paolo Filippucci, G. Amarnath, L. Brocca   +5 more
semanticscholar   +1 more source

Advanced processing of altimetry Cassini radar data

2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM, 2011
The Cassini RADAR is a Ku band multimode instrument capable of providing topography information of Titan's surface when operating in altimetry mode. During the last six years (January 2005 to 2011) Cassini has performed 71 Titan's fly-bys and several observations have been collected in Altimetry mode.
M. Mastrogiuseppe, V. Poggiali, R. Seu, G. Picardi   +3 more
openaire   +1 more source

Mapping Forested Floodplain Topography Using InSAR and Radar Altimetry

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019
An accurate floodplain digital elevation model (DEM) is an essential input for the hydraulic modeling of water flows across the floodplain. A method combining interferometric synthetic aperture radar (InSAR) and radar altimetry is presented to derive the
Ting Yuan, Hyongki Lee, Hanwen Yu, H. Jung, Austin Madson, Y. Sheng, E. Beighley   +6 more
semanticscholar   +1 more source

Measurements of electromagnetic bias in radar altimetry

Journal of Geophysical Research: Oceans, 1991
The accuracy of satellite altimetric measurements of sea level is limited in part by the influence of ocean waves on the altimeter signal reflected from the sea surface. The difference between the mean reflecting surface and mean sea level is the electromagnetic bias.
W. K. Melville, R. H. Stewart, W. C. Keller, J. A. Kong, D. V. Arnold, A. T. Jessup, M. R. Loewen, A. M. Slinn   +7 more
openaire   +1 more source

Radar Altimetry for Land Applications

1989
An international programme for polar earth observations will be established by NASA /ESA/NASDA, starting in 1995. Among many other instruments, the first NASA mission (EOS-1) will possibly incorporate a sensor system for measuring global land topography.
openaire   +1 more source

Sea State Bias in Radar Altimetry Revisited

Marine Geodesy, 2010
Sea state bias (SSB) is calculated anew for each radar altimeter. The input data are sea surface height (h) differences, separated in time by at most one repeat cycle, or the difference between measured h and a time-mean sea surface, an approach called here “differences from the mean” (DFM).
Jessica Hausman, Victor Zlotnicki
openaire   +1 more source

Radar altimetry response from rough surfaces

Photogrammetria, 1987
Abstract Radar altimetry from SKYLAB, GEOS-3 and SEASAT has clearly shown the capability of the technique for measurements of wave-height, tidal action and the deviation from the perfect geoid. In order to further evaluate the performance over ice and land areas, a simulation model was developed, which estimates the pulse response from an arbitrary ...
openaire   +1 more source