Results 141 to 150 of about 1,099 (177)

Interferometric and tomographic SAR

2017
Multipass differential synthetic aperture radar (SAR) interferometry (DInSAR), with its capability to accurately monitor ground displacements, has dramatically pushed the applications of imaging radars in many fields, particularly in the area of environmental risk monitoring and security. Advanced DInSAR techniques operating at reduced resolution allow
openaire   +1 more source

Structural classification of forest by means of L-band tomographic SAR

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
Synthetic Aperture Radar Tomography provides the 3D reflectivity of the observed scene. Hence, in a forest scenario, it reflects information relevant to forest structure. However, how and to which extent this information is reflected and which are possible ways to quantify it are still open questions.
Marivi Tello, Victor Cazcarra-Bes, Matteo Pardini, Kostas Papathanassiou   +3 more
openaire   +1 more source

Within the resolution cell: Super-resolution in tomographic SAR imaging

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
We address the problem of resolving two closely spaced complex-valued points from N irregular Fourier domain samples. Although this is a generic super-resolution problem, our target application is SAR tomography where typically the number of acquisitions is N = 10…100 and SNR = 0…10dB.
Xiaoxiang Zhu 0001, Richard Bamler
openaire   +2 more sources

Tomographic formulation of interferometric SAR for terrain elevation mapping

IEEE Transactions on Geoscience and Remote Sensing, 1995
Topographic mapping with spotlight synthetic aperture radar (SAR) using an interferometric technique is studied. Included is a review of the equations for determination of terrain elevation from the phase difference between a pair of SAR images formed from data collected at two differing imaging geometries.
openaire   +1 more source

Generalized Parametric Iterative Approach for Tomographic SAR Reconstruction

IEEE Geoscience and Remote Sensing Letters
The reconstruction of high-elevation natural and artificial structures through synthetic aperture radar (SAR) tomography has been an active research topic owing to its significance in various earth science applications. However, the complexity of this task arises from inaccuracies in the estimated reconstruction, attributed to factors such as low ...
Nabil Haddad, Azzedine Bouaraba, Karima Hadj-rabah, Alessandra Budillon, Lekhmissi Harkati, Gilda Schirinzi   +5 more
openaire   +1 more source

Holographic SAR Tomographic Processing of the Multicircular Data

2018 Asia-Pacific Microwave Conference (APMC), 2018
In recent years, the holographic synthetic aperture radar (SAR) has attracted an increasing interest because of its potential ability of full three-dimensional (3-D) reconstructions at very high resolution over 360°azimuth angle variation. The traditional Fourier-based focusing methods are susceptible to the problem of irregular sampling which is ...
Dong Feng, Daoxiang An, Xiaotao Huang, Zhimin Zhou   +3 more
openaire   +1 more source

A tomographic approach to multi-pass SAR imaging

2003
In this communication we illustrate the employment of a tomographic technique to face the problem of synthetic aperture radar (SAR) imaging in a two-dimensional and scalar geometry and under a multi-frequency/ multi-monostatic measurement configuration.
LEONE, Giovanni, LISENO A, PIERRI, Rocco, SOLIMENE, Raffaele   +3 more
openaire   +3 more sources

SAR tomographic focusing by Compressive Sampling: Experiments on real data

2010 IEEE International Geoscience and Remote Sensing Symposium, 2010
In this paper a 3-D SAR imaging technique based on Compressive Sampling is experimented on ERS 1–2 data. The technique is based on the sparsity property of the image to be focused along the elevation direction (i.e. only few scatterers with different elevation are present in the same range-azimuth resolution cell), exploits a reduced number of unevenly
BUDILLON, Alessandra, Evangelista, Annarita, SCHIRINZI, Gilda   +2 more
openaire   +1 more source

A Tomographic Foundation for Spotlight-Mode Sar Imaging

1996
In this chapter we develop a rigorous mathematical foundation that describes how a spotlight-mode SAR can achieve resolution simultaneously in the range and cross-range dimensions. As will be seen, the solution to the range resolution problem via the classic notion of echo separation using high-bandwidth pulses appears at first to be irrelevant to the ...
Charles V. Jakowatz, Daniel E. Wahl, Paul H. Eichel, Dennis C. Ghiglia, Paul A. Thompson   +4 more
openaire   +1 more source

SAR Tomographic Imaging Demonstration Using GF-3 Data

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
Synthetic aperture radar (SAR) tomography (TomoSAR) is well established for three-dimensional (3D) reconstruction in urban buildings. There are many methods usually require a large data stacks for a reliable reconstruction and very few methods to handle small data stacks.
Hongliang Lu, Yunkai Deng, Heng Zhang 0007, Weidong Yu, Robert Wang 0001   +4 more
openaire   +1 more source