Results 71 to 80 of about 17,166 (214)

CREATION OF THE ARCHITECTURE OF "DISTRIBUTED SATELLITE" FOR LOW-ORBITAL INFORMATION-TELECOMMUNICATION SYSTEMS BASED ON THE GROUPING OF MICRO AND NANO SATELLITES

Авіаційно-космічна техніка та технологія, 2018
Presented are the results of an analysis of the growing interest in the use of low Earth orbits (up to 1500 km high) for the introduction and development of the Internet of things (Internet of Things - IoT).
Михаил Ефимович Ильченко, Теодор Николаевич Нарытник, Борис Михайлович Рассамакин, Владимир Ильич Присяжный, Сергей Владимирович Капштык   +4 more
doaj   +1 more source

Bi- and Multistatic SAR: Potentials and Challenges

, 2004
Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas which are mounted on separate platforms. Such a spatial separation has several operational advantages which will increase the capability, reliability ...
Moreira, Alberto, Fiedler, Hauke, Krieger, Gerhard   +2 more
core  

Digital Beamforming and MIMO SAR: Review and New Concepts

, 2012
Spaceborne Synthetic Aperture Radar (SAR) is a unique tool for large scale Earth observation, but the current generation of SAR sensors suffers from some fundamental limitations with regard to their imaging and mapping capabilities.
Villano, Michelangelo, Patyuchenko, Anton, Laskowski, Piotr, Huber, Sigurd, Bordoni, Federica, Moreira, Alberto, Younis, Marwan, Krieger, Gerhard, Kim, Junghyo, Rommel, Tobias, Lopez-Dekker, Paco   +10 more
core  

An Efficient Method for Performance Monitoring of Active Phased Array Antennas

, 2009
Modern synthetic aperture radars (SARs) are equipped with active phased array antennas to electronically generate various antenna beams. The TerraSAR-X satellite is a high resolution SAR system launched in June 2007.
Schwerdt, Marco, Bachmann, Markus, Bräutigam, Benjamin   +2 more
core   +1 more source

A robust nonlinear scale space change detection approach for SAR images [PDF]

, 2013
In this paper, we propose a change detection approach based on nonlinear scale space analysis of change images for robust detection of various changes incurred by natural phenomena and/or human activities in Synthetic Aperture Radar (SAR) images using ...
Müjdat Çetin, Okman, O. Erman, Çetin, Müjdat, Can Demirkesen, Berk Sevilmis, Fatih Nar, Demirkesen, Can, Sevilmiş, Berk, Osman Erman Okman, Nar, Fatih   +9 more
core   +1 more source

A Tandem TerraSAR-X Configuration for Single-Pass SAR Interferometry

, 2004
TanDEM-X is a mission proposal for a TerraSAR-X add-on satellite to enable high-resolution single-pass SAR interferometry. The TanDEM-X mission has the goal of generating a global Digital Elevation Model (DEM) with an accuracy corresponding to the DTED-3
Werner, Marian, Hajnsek, Irena, Moreira, Alberto, Settelmeyer, Eckard, Ebner, Hermann, Hounam, David, Krieger, Gerhard, Riegger, Sebastian   +7 more
core  

Bidirectional SAR Imaging Mode

, 2013
The paper introduces the Bi-Directional (BiDi) SAR imaging mode, i.e. the simultaneous imaging of two directions by one antenna into one receiving channel, and presents short-term time series of images and interferograms acquired by the TerraSAR-X and ...
Wollstadt, Steffen, Mittermayer, Josef, Moreira, Alberto, Prats, Pau, Krieger, Gerhard, Lopez-Dekker, Paco   +5 more
core   +1 more source

Three-dimensional Tomographic Imaging of Urban Buildings and Structures Using Chinese Commercial SAR Satellite Data

Leida xuebao
A single Synthetic Aperture Radar (SAR) image can capture only two-dimensional information, and traditional multitemporal Interferometric SAR (InSAR) techniques struggle with the layover problem, particularly in urban areas.
Youjun WANG, Zhen DONG, Xiantao WANG, Anxi YU, Yifei JI, Cheng LI, Yongbo HUANG, Feng YANG, Jinhai HUANG   +8 more
doaj   +1 more source

Fusion of GNSS and Satellite Radar Interferometry: Determination of 3D Fine-Scale Map of Present-Day Surface Displacements in Italy as Expressions of Geodynamic Processes

Remote Sensing, 2019
We present a detailed map of ground movement in Italy derived from the combination of the Global Navigation Satellite System (GNSS) and Satellite Synthetic Aperture Radar (SAR) interferometry.
Gregorio Farolfi, Aldo Piombino, Filippo Catani   +2 more
doaj   +1 more source

Digital Beamforming: A Paradigm Shift for Spaceborne SAR

, 2013
Spaceborne Synthetic Aperture Radar (SAR) provides high-resolution, day-and-night and weather-independent images for a multitude of applications ranging from geoscience and climate change research, environmental monitoring, global 2-D and 3-D mapping ...
Moreira, Alberto
core