Results 21 to 30 of about 2,975,863 (286)

Multipath Reflectivity Estimation in Urban Environments for Synthetic Aperture Radar Images [PDF]

open access: yes, 2010
Synthetic Aperture Radar (SAR) images a target region reflectivity function in the multi-dimensional spatial domain of range and cross-range. SAR synthesizes a large aperture radar in order to achieve a finer azimuth resolution than the one provided by ...
Arriba Ruiz, Imanol de   +5 more
core   +1 more source

Lucky imaging and aperture synthesis with low-redundancy apertures [PDF]

open access: yes, 2009
Lucky imaging, used with some success in astronomical and even horizontal-path imaging, relies on fleeting conditions of the atmosphere that allow momentary improvements in image quality, at least in portions of an image.
Ward, Jennifer E.   +2 more
core   +1 more source

High resolution digital holographic synthetic aperture applied to deformation measurement and extended depth of field method [PDF]

open access: yes, 2010
This paper discusses the potential of the synthetic-aperture method in digital holography to increase the resolution, to perform high accuracy deformation measurement, and to obtain a three-dimensional topology map.
Claus, Daniel
core   +1 more source

Synthetic aperture guided wave imaging using a mobile sensor platform [PDF]

open access: yes, 2012
This oral session at conference looks at synthetic aperture guided wave imaging using a mobile sensor ...
Summan, Rahul   +4 more
core   +5 more sources

An Investigation on the Damping Ratio of Marine Oil Slicks in Synthetic Aperture Radar Imagery

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
The damping ratio has recently been used to indicate the relative internal oil thickness within oil slicks observed in synthetic aperture radar (SAR) imagery. However, there exists no well-defined and evaluated methodology for calculating the damping ratio.
Cornelius Quigley   +2 more
openaire   +4 more sources

Extending AMCW lidar depth-of-field using a coded aperture [PDF]

open access: yes, 2011
By augmenting a high resolution full-field Amplitude Modulated Continuous Wave lidar system with a coded aperture, we show that depth-of-field can be extended using explicit, albeit blurred, range data to determine PSF scale. Because complex domain range-
Michael J. Cree   +5 more
core   +1 more source

Investigation of the equivalent circuit parameters and design of a dual polarised dual frequency aperture coupled microstrip antenna [PDF]

open access: yes, 2013
This paper presents a simplified approach to the design of a single feed dual polarised, dual frequency (1.9 and 2.4 GHz) aperture coupled microstrip antenna. Using simulation and practical investigation, the coupling between the microstrip feed line and
Ghassemlooy, Zabih   +7 more
core   +1 more source

Noise-robust range alignment method for inverse synthetic aperture radar based on aperture segmentation and average range profile correlation

open access: yesEURASIP Journal on Advances in Signal Processing, 2021
Range alignment is an essential procedure in the translation motion compensation of inverse synthetic aperture radar imaging. Global optimization or maximum-correlation-based algorithms have been used to realize range alignment.
Yue Lu, Jian Yang, Yue Zhang, Shiyou Xu
doaj   +1 more source

Multidimensional Waveform Encoding for Synthetic Aperture Radar Remote Sensing [PDF]

open access: yes, 2007
This paper introduces and analyses the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Moreira, Alberto   +5 more
core   +1 more source

Filtration characteristics of composite filter of woven-nonwoven geotextile in tailings ponds

open access: yesJournal of Industrial Textiles, 2022
Nonwoven geotextiles are widely used in tailings ponds for filtration and drainage, but there is a risk of failure of nonwoven geotextile due to physical clogging.
Sheng Liu   +3 more
doaj   +1 more source

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