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Introduction to the Special Issue on "Satellite Altimetry: New Sensors and New Applications"

Graham Quartly, Ge Chen
2006 Sensors  
An innovative solution to the problem of insufficient spatiotemporal sampling has been to develop plans for an altimeter with two receivers, enabling a swath of observations via interferometric techniques  ...  The first spaceborne test of the concept was on Skylab in 1973.  ... 
doi:10.3390/s6060616 fatcat:ngzef35pj5b5dgammiy62jrgfe

Success Stories of Satellite Radar Altimeter Applications

Hisham Eldardiry, Faisal Hossain, Margaret Srinivasan, Vardis Tsontos
2021 Bulletin of The American Meteorological Society - (BAMS)  
Knowledge of the breadth of current utility of altimeter observations can help the scientific community to demonstrate the value in continuing radar altimeter and similar missions, particularly those with  ...  AbstractFor nearly three decades, satellite nadir altimeters have provided essential information to understand, primarily ocean, and also, inland water dynamics.  ...  and more innovative missions, such as SWOT.  ... 
doi:10.1175/bams-d-21-0065.1 fatcat:cg5zpd536zct7f27xzpjgqnqo4

Optimization of NOE Flights Sensors and Their Integration [chapter]

Tamilselvam Nallusamy, Prasanalakshmi Balaji
2019 Advances in Human and Machine Navigation Systems [Working Title]  
The radar altimeter (RA) or terrain following radar (TFR), terrain awareness and warning system (TAWS) used to identify the curbs during flying in NOE flights.  ...  The terrain following radar (TFR) keeps up the altitude from the beginning.  ...  Terrain following radar Terrain-following radar is an aviation innovation that permits an extremely low-flying airplane to keep up a moderately constant height over the ground level.  ... 
doi:10.5772/intechopen.86139 fatcat:bzowwlc6pnamhbdyckv4b2rksi

New rangefinder system for microsatellite

Stefania Mattei, Maria R. Santovito, Antonio Moccia, Christian Werner
2004 Laser Radar Technology for Remote Sensing  
In order to carry out a compact and reliable altimeter for satellite UNISAT a review and comparison have been made with rangefinder systems both for the microwaves (radar systems) and for the visible infrared  ...  A pulsed laser altimeter system based on Time Of Flight measurement appears the more suitable for the aforementioned application.  ...  Finally we want to underline some specific characteristics of radar altimeters vs laser altimeters: the size of radar altimeters is usually larger than laser altimeters, radar require average on a high  ... 
doi:10.1117/12.510672 fatcat:3ix3wg35xjgllk5ul55mczmz6m

Concept study of radar sensors for near-field tsunami early warning

T. Börner, M. Galletti, N. P. Marquart, G. Krieger
2010 Natural Hazards and Earth System Sciences  
In this paper we propose new concepts for near-field tsunami early detection, based on innovative and up-to-date microwave remote sensing techniques.  ...  We particularly introduce the NESTRAD (NEar-Space Tsunami RADar) concept, which consists of a real aperture radar accommodated inside a stationary stratospheric airship providing continuous monitoring  ...  The proposed concepts envision a number of LEO microsatellites carrying altimeters (implemented either with active or passive radar technology).  ... 
doi:10.5194/nhess-10-1957-2010 fatcat:a2nkf6bqpbguxp3nghzgubt7r4

SAR Altimetry Applications over Water [article]

C. Martin-Puig, J. Marquez, G. Ruffini, R.K. Raney, J. Benveniste
2008 arXiv   pre-print
The application of Synthetic Aperture Radar (SAR) techniques to classical radar altimetry offers the potential for greatly improved Earth surface mapping.  ...  More specifically, one of the tasks focuses on the reduction of SAR mode data to pulse-limited altimeter data, and a theoretical modelling to characterize the expected gain between high Pulse Repetition  ...  SAR altimetry was first described as Delay/Doppler Radar Altimeter in 1998 [1] . Its key innovation is the addition of along track processing for increased resolution and multi-look processing.  ... 
arXiv:0802.0804v1 fatcat:yfidfbeumzeavjsfug47q7u53e

Seasat—A 25-year legacy of success

Diane L. Evans, Werner Alpers, Anny Cazenave, Charles Elachi, Tom Farr, David Glackin, Benjamin Holt, Linwood Jones, W. Timothy Liu, Walt McCandless, Yves Menard, Richard Moore (+1 others)
2005 Remote Sensing of Environment  
It was the first Earth-orbiting satellite to carry four complementary microwave experiments-the Radar Altimeter (ALT) to measure ocean surface topography by measuring spacecraft altitude above the ocean  ...  the Scanning Multichannel Microwave Radiometer (SMMR) to measure surface wind speed, ocean surface temperature, atmospheric water vapor content, rain rate, and ice coverage; and the Synthetic Aperture Radar  ...  This proof-of-concept phase culminated with the Seasat Radar Altimeter (ALT), which was derived from the GEOS-3 altimeter but had improved accuracy.  ... 
doi:10.1016/j.rse.2004.09.011 fatcat:b72ap4uobnglpaddmeuq7lom7m

Accuracy Analysis of the InSAR Altimeter in Relative Elevation Measurements of the Sea Surface

Bo Liu, Zhengfang Lu, Lifu Chen, Weiya Kong, Xiaohong Sui
2021 IEEE Access  
The authors would also like to thank the National Defense Science and Technology Innovation Special Zone Project.  ...  The concept of using an InSAR altimeter for global ocean topography surveys faces the huge challenge of obtaining higher measurement accuracy [10] [11] .  ...  INTRODUCTION Satellite radar altimeters can be used for sea-level measurement and to obtain the global ocean geoid [1] .  ... 
doi:10.1109/access.2021.3058767 fatcat:juvcj6xcvbbpdogf5mdzfelffa

Contribution of future wide-swath altimetry missions to ocean analysis and forecasting

Antonio Bonaduce, Mounir Benkiran, Elisabeth Remy, Pierre Yves Le Traon, Gilles Garric
2018 Ocean Science (OS)  
, the error in ocean analysis was reduced by up to 50<span class="thinspace"></span>% compared to conventional altimeters.  ...  The results obtained in the OSSEs considering along-track altimeters were consistent with those derived from real data (observing system experiments, OSEs).  ...  Different wide-swath altimeter concepts were analysed by Thales Alenia Space (TAS) as part of this ESA study.  ... 
doi:10.5194/os-14-1405-2018 fatcat:jath3gpcvjcrvjmjdk4xxy62u4

Terrain-aided navigation of an unpowered tactical missile using autopilot-grade sensors

1984 Journal of Guidance Control and Dynamics  
The guidance concept is basically composed of four parts: a navigation system, a terrain map, a radar altimeter, and the 176 W.E. LONGENBAKER Kalman filter (see Fig. 2).  ...  This is a simplified radar altimeter model and represents an attempt to model the actual effect in which the radar altimeter measurement becomes correlated with the terrain profile.  ... 
doi:10.2514/3.8564 fatcat:mkct5xv3ibcfhg4ndm2doy5vuy

Ocean remote sensing: Challenges for the future

Bertrand Chapron, Rene Garello, David E. Weissman
2008 OCEANS 2008  
Following such a concept, interferometric techniques are emerging technologies to provide radar line-of-sight sea surface motion information at very high spatial resolution.  ...  HIGHER RESOLUTION A basic tool for measuring the oceanographic topography is the radar altimeter.  ... 
doi:10.1109/oceans.2008.5289439 fatcat:dm53d53am5edno54a6pcmna2yq

Satellite Remote Sensing of the Greenland Ice Sheet Ablation Zone: A Review

Cooper, Smith
2019 Remote Sensing  
bias; employing dual-frequency radar, microwave scatterometry, or combining radar and laser altimetry to map seasonal snow depth; fusing optical imagery, radar imagery, and microwave scatterometry to  ...  Specific examples include fusing laser altimetry, radar altimetry, and optical stereophotogrammetry to enhance spatial measurement density, cross-validate surface elevation change, and diagnose radar elevation  ...  Altimeter RA-2 Radar Altimeter 2 SAR Synthetic Aperture Radar SASS SEASAT-A Satellite Scatterometer SGLI Second generation Global Imager SIRAL Synthetic Aperture Interferometric Radar Altimeter  ... 
doi:10.3390/rs11202405 fatcat:u354j62lijfghhvmnjfafd2g3i

Contribution of future wide swath altimetry missions to ocean analysis and forecasting

Antonio Bonaduce, Mounir Benkiran, Elisabeth Remy, Pierre Yves Le Traon, Gilles Garric
2018 Ocean Science Discussions  
, the error in the ocean analysis was reduced up to the 50<span class="thinspace"></span>%, with respect to conventional altimeters.  ...  The results obtained in the OSSEs considering along-track altimeters were consistent with those derived with real data (observing system experiments, OSEs).  ...  Different wide swath altimeter concepts are analyzed by Thales Alenia Space (TAS) as part of this ESA study.  ... 
doi:10.5194/os-2018-58 fatcat:vskosy347vaord2h5gvrkbfjky

Altimetry with GNSS-R interferometry: first proof of concept experiment

Antonio Rius, Oleguer Nogués-Correig, Serni Ribó, Estel Cardellach, Santi Oliveras, Enric Valencia, Hyuk Park, José Miguel Tarongí, Adriano Camps, Hans van der Marel, Roel van Bree, Bas Altena (+1 others)
2011 GPS Solutions  
The Global Navigation Satellite System Reflectometry (GNSS-R) concept was conceived as a means to densify radar altimeter measurements of the sea surface.  ...  altimeter and a local geodetic network.  ...  Acknowledgments The X Band WaveGuide radar altimeter was kindly provided to us by RADAC BV, The Netherlands.  ... 
doi:10.1007/s10291-011-0225-9 fatcat:demoe3bgabf2nmvbiiamnz7z5i

Assessment of Arctic Sea Ice Classification Ability of Chinese HY-2B Dual-band Radar Altimeter during Winter to Early Spring Conditions

Xi Zhang, Yixun Zhu, Jie Zhang, Qimao Wang, Lijian Shi, Junmin Meng, Chenqing Fan, Meijie Liu, Genwang Liu, Meng Bao
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Index Terms-dual-band radar altimeter, HY-2B, sea ice classification, waveform features.  ...  Accurate identification of sea ice type from altimeter data is important for inversion of sea ice freeboard by radar altimeter, as well as for maritime navigation in polar regions.  ...  radar altimeter (Fig. 4(f) and 4(g) ).  ... 
doi:10.1109/jstars.2021.3114228 fatcat:jsdp6pyaonfu3km3rhs2mmbqz4
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