Results 61 to 70 of about 17,166 (214)

Space-borne Ka-Band Across-Track SAR Interferometer

open access: yes, 2012
The results of an ESA study concerning a future Ka-band SAR mission and instrument concept are reported. One aim of the study has been to explore the feasibility of a future single-platform, across-track interferometric SAR instrument with HRTI-3 ...
Dagazo-Eusebio, Elena   +5 more
core  

Analysis of Methods for Reconstructing Periodically Missed SAR Data Acquired Close to Nyquist

open access: yes, 2012
The cooperative nature of the TanDEM-X mission bistatic operation allows the periodically exchange of information between transmitter and receiver over the SAR acquisition.
Marc Rodriguez-Cassola   +7 more
core   +1 more source

Design and On-Orbit Performance of Ku-Band Phased-Array Synthetic-Aperture Radar Payload System

open access: yesSensors
The current emphasis in the advancement of space-based synthetic-aperture radar (SAR) is on lightweight payloads under 100 kg with resolutions surpassing 1 m.
Wei Yan   +5 more
doaj   +1 more source

Earth Observation with SAR Satellite Formations: New Techniques and Innovative Products

open access: yes, 2009
This paper discusses the use of small satellites for future radar remote sensing applications. After a short introduction, we give first an overview of the TanDEM-X mission to be launched in autumn 2009. Here, special emphasis is put on the demonstration
Moreira, Alberto   +2 more
core  

Modifications in the SIFT operator for effective SAR image matching

open access: yes, 2010
With the increasing availability and rapidly improving spatial resolution of SAR images from latest and future satellites like TerraSAR-X and TanDEM-X, their applicability in remote sensing applications is set to be paramount.
Sahil Suri   +7 more
core   +1 more source

Ship and Oil-Spill Detection Using the Degree of Polarization in Linear and Hybrid/Compact Dual-Pol SAR [PDF]

open access: yes, 2012
Monitoring and detection of ships and oil spills using synthetic aperture radar (SAR) have received a considerable attention over the past few years, notably due to the wide area coverage and day and night all-weather capabilities of SAR systems.
Shirvany, Reza   +2 more
core   +1 more source

A weighted least squares solution for space intersection of spaceborne stereo SAR data

open access: yes, 2001
The use of stereoscopic SAR images offers an alternative to interferometric SAR for the generation of digital elevation models (DEMs). The stereo radargrammetric method is robust and can generate DEMs of sufficient accuracy to geocode SAR images ...
Dowman, I.J.   +3 more
core  

Evolution of Spaceborne SAR Missions in Earth Orbit

open access: yesRemote Sensing
A truly operational SAR was first flown in space in 1978 on board the Seasat satellite. Since then, its utilization first expanded to Canada, Europe and Japan, and then to countries with emerging space industries later on. Many technological developments
Marco D’Errico
doaj   +1 more source

A New Geosynchronous SAR Constellation and its Signal Characteristics

open access: yesIEEE Access, 2019
The Geosynchronous Synthetic Aperture Radar (GEO SAR) has a long synthetic aperture time. The temporal decoherence and azimuth variance characteristics of echo are significant, that brings great challenges to signal to process.
Hailong Xu   +5 more
doaj   +1 more source

Geometric Positioning Accuracy Improvement Method of Micro SAR Satellites With Large Positioning Errors

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The rapid development of micro synthetic aperture radar (SAR) satellites provides a new means of all-day, all-weather, and high-frequency Earth observation.
Qian Cheng   +4 more
doaj   +1 more source

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