Results 21 to 30 of about 14,370,095 (307)
On the minimum number of tracks for SAR tomography [PDF]
, 2008 The main drawback of SAR Tomography (SARTom) is the considerable number of tracks required to achieve the 3-dimensional (3D) representation of a viewed scene.
Rolf Scheiber +5 more
core +1 more source
GNSS Interference in L-Band SAR Missions � Assessment and Mitigation [PDF]
The International Technical Meeting of the The Institute of Navigation, 2019 Synthetic Aperture Radar (SAR) satellites commonly make use of onboard Global Positioning System (GPS) receivers for precise orbit and baseline determination. In view of the extreme SAR transmit power levels, interference from SAR signals may inhibit proper GPS tracking and poses a particular challenge to space missions using L-band SAR signals with ...
Montenbruck, Oliver +2 more
openaire +2 more sources
Wavelet-Based Compressed Sensing for SAR Tomography of Forested Areas [PDF]
, 2012 Synthetic aperture radar (SAR) tomography is a 3-D imaging modality that is commonly tackled by spectral estimation techniques. Thus, the backscattered power along the cross-range direction can be readily obtained by computing the Fourier spectrum of a ...
Nannini, Matteo +2 more
core +1 more source
SAR Coherence Tomography For Boreal Forest With Aid of Laser Measurements [PDF]
, 2008 In this paper we evaluate X- and L-band SAR coherence tomography in boreal forest with the help of detailed digital terrain and canopy height models, produced by laser scanning.
Praks, Jaan +9 more
core +1 more source
Engineering Proceedings, 2022 The polarimetric calibration (PolCal) is an essential process to ensure the minimization of distortions from airborne and spaceborne SAR data for scattering-based characterization of the targeted objects.
Shashi Kumar
doaj +1 more source
Under-Foliage Object Imaging Using SAR Tomography and Polarimetric Spectral Estimators [PDF]
, 2012 International audienceThis paper addresses the imaging of objects located under a forest cover using polarimetric synthetic aperture radar tomography (POLTOMSAR) at L-band.
Huang, Yue +5 more
core +1 more source
First 3-D reconstructions of target hidden beneath foliage by means of polarimetric SAR tomography [PDF]
, 2012 SAR tomography (SARTom) is an imaging technique that allows multiple phase center separation in the vertical direction, leading to a 3-dimensional (3D) reconstruction of the imaged scene. Retrieval of volume structure information (e.g.
Rolf Scheiber +7 more
core +1 more source
Estimation and correction of scintillation effects on spaceborne P-band SAR images [PDF]
, 2012 A correction method for distortions induced by ionospheric scintillation effects on P-band quad-pol synthetic aperture radar (SAR) data acquired in polar and high latitude regions is presented.
Konstantinos P. Papathanassiou +8 more
core +1 more source
Design and Implementation of a Multi-Band Active Radar Calibrator for SAR
Remote Sensing, 2019 Over the past decade, IECAS (Institute of Electronics, Chinese Academy of Sciences) has developed a set of L-, S-, C-, and X-band active radar calibrators that are deployed during the calibration campaigns for HJ1C synthetic aperture radar (SAR), Gaofen ...
Liang Li +4 more
doaj +1 more source
Sensors, 2009 This paper describes the methodology applied to generate simulated multipolarized L-band SAR images of the MAPSAR (Multi-Application Purpose SAR) satellite from the airborne SAR R99B sensor (SIVAM System). MAPSAR is a feasibility study conducted by INPE (
Wagner Fernando da Silva +7 more
doaj +1 more source