Digital Beamforming on Receive: Techniques and Optimization Strategies for High-Resolution Wide-Swath SAR Imaging [PDF]
, 2009 Synthetic Aperture Radar (SAR) is a well-proven imaging technique for remote sensing of the earth. However, conventional SAR systems are not capable to fulfill the increasing demands for im-proved spatial resolution and wider swath coverage.
Alberto Moreira +5 more
core
Platform motion estimation in multi-band synthetic aperture sonar with coupled variational autoencoders [PDF]
JASA Express LettersCoherent processing in synthetic aperture sonar (SAS) requires platform motion estimation and compensation with sub-wavelength accuracy for high-resolution imaging.
Angeliki Xenaki +2 more
doaj +1 more source
High-Resolution Sonars: What Resolution Do We Need for Target Recognition?
EURASIP Journal on Advances in Signal Processing, 2010 Target recognition in sonar imagery has long been an active research area in the maritime domain, especially in the mine-counter measure context. Recently it has received even more attention as new sensors with increased resolution have been developed ...
Pailhas Yan, Petillot Yvan, Capus Chris
doaj
Self-Training Can Reduce Detection False Alarm Rate of High-Resolution Imaging Sonar
Applied SciencesImaging sonar is a primary means of underwater detection, but it faces challenges of high false alarm rates in sonar image target detection due to factors such as reverberation, noise, and resolution.
Jingqi Han +5 more
doaj +1 more source
Fusion of Local Statistical Parameters for Buried Underwater Mine Detection in Sonar Imaging
EURASIP Journal on Advances in Signal Processing, 2008 Detection of buried underwater objects, and especially mines, is a current crucial strategic task. Images provided by sonar systems allowing to penetrate in the sea floor, such as the synthetic aperture sonars (SASs), are of great interest for the ...
M. Amate +4 more
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Spaceborne Bi- and Multistatic SAR: Potential and Challenges [PDF]
, 2006 Bi- and multistatic synthetic aperture radar (SAR) operates with distinct transmit and receive antennas that are mounted on separate platforms. Such a spatial separation has several operational advantages, which will increase the capability, reliability ...
Moreira, Alberto, Krieger, Gerhard
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Moving Target Signals in High Resolution Wide Swath SAR [PDF]
, 2008 In this paper the impact of two high resolution wide swath synthetic aperture radar imaging techniques, extraction of signals from azimuth subsampled spectra and subpulse azimuth beamsteering on transmit, on ground moving target signals is analyzed ...
Krieger, Gerhard, Gabele, Martina
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Improved Chirp Scaling Algorithm for Processing Squinted Mode Synthetic Aperture Sonar Data
Cybernetics and Information Technologies, 2016 The conventional Chirp Scaling Algorithm is mainly used in side looking or small squint angle mode of synthetic aperture imaging. In application of synthetic sonar, the large squint angle imaging is often required and the range-azimuth coupling is ...
Fan Naiqiang, Wang Yingmin, Lv Yarong
doaj +1 more source
High Precision Antenna Characterisation for Broadband Synthetic Aperture Radar Processing [PDF]
, 2014 The airborne F-SAR sensor\cite{fsar}, developed and operated by the DLR-HR institute, acquires very high resolution, fully polarimetric synthetic aperture radar (SAR) data in multiple frequency bands in addition to providing a number of ...
Bernd Gabler +5 more
core +1 more source
An experimental test of endfire synthetic aperture sonar for sediment characterisation
IET Radar, Sonar & NavigationThe validation of seafloor scattering models used for seabed characterisation requires quantifying the contributions from the sediment interface and volume to the total acoustic returns.
Shannon‐Morgan Steele +1 more
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