Results 61 to 70 of about 1,248,801 (164)

CZT Algorithm for Multiple-Receiver Synthetic Aperture Sonar

IEEE Access, 2020
The compensation of slant range motion errors needs to be carried out after range pulse compression in the signal processing of multiple-receiver synthetic aperture sonar (SAS).
Mengbo Ma, Jinsong Tang, Heping Zhong
doaj   +1 more source

SH-SAS: An Implicit Neural Representation for Complex Spherical-Harmonic Scattering Fields for 3D Synthetic Aperture Sonar

2026 International Conference on 3D Vision (3DV)
Synthetic aperture sonar (SAS) reconstruction requires recovering both the spatial distribution of acoustic scatterers and their direction-dependent response. Time-domain backprojection is the most common 3D SAS reconstruction algorithm, but it does not model directionality and can suffer from sampling limitations, aliasing, and occlusion. Prior neural
Omkar Vengurlekar, Adithya Pediredla, Suren Jayasuriya   +2 more
openaire   +3 more sources

Diversity in Stable GANs: A Systematic Review of Mode Collapse Mitigation Strategies

Engineering Reports, Volume 7, Issue 6, June 2025.
We provide a methodical understanding of the mode collapse issue in GANs for image‐to‐image translation, covering its root causes, implications, effectiveness of existing mitigation strategies and evaluation metrics while identifying open challenges.
Matthew Cobbinah, Henry Nunoo‐Mensah, Prince Ebenezer Adjei, Francisca Adoma Acheampong, Isaac Acquah, Eric Tutu Tchao, Andrew Selasi Agbemenu, Jerry John Kponyo, Emmanuel Abaidoo   +8 more
wiley   +1 more source

Estudo e desenvolvimento de algoritmos de sonar ativo para o mapeamento de áreas submersas [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Recentes avanços no cenário marítimo brasileiro - como a descoberta e exploração do pré-sal e a ...
Ristow, João Paulo
core  

D4SC: Deep Supervised Semantic Segmentation for Seabed Characterization and Uncertainty Estimation for Large Scale Mapping

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Seabed characterization consists in the study of the physical and biological properties of the of ocean floors. Sonar is commonly employed to capture the acoustic backscatter reflected from the seabed.
Yoann Arhant, Olga Lopera Tellez, Xavier Neyt, Aleksandra Pizurica   +3 more
doaj   +1 more source

Model selection techniques for seafloor scattering statistics in synthetic aperture sonar images of complex seafloors

IET Radar, Sonar &Navigation, Volume 18, Issue 11, Page 2044-2056, November 2024.
High resolution sonar imagery are analysed using a mixture model consisting of K distributions. The number of K distributions is chosen using several model selection techniques and compared with the authors own interpretation of the data. Abstract In quantitative analysis of seafloor scattering measurements, it is common to model the single‐point ...
Derek R. Olson, Marc Geilhufe
wiley   +1 more source

Seafloor imagery with an advanced imaging sonar system

Frontiers in Marine Science
The mapping swath and along-track resolution can be simultaneously enhanced by using multireceiver synthetic aperture sonar (SAS). Unfortunately, the SAS parameters, including the pulse repetition frequency, SAS moving velocity, and the along-track ...
Lili Zhang, Xuemei Cao, Peng Wu, Shaoping Sun, Zhiping Xu   +4 more
doaj   +1 more source

Performance Investigation on Scan-On-Receive and Adaptive Digital Beam-Forming for High-Resolution Wide-Swath Synthetic Aperture Radar [PDF]

, 2009
The work investigates the performance of the Smart Multi-Aperture Radar Technique (SMART) Synthetic Aperture Radar (SAR) system for high-resolution wide-swath imaging based on Scan-on-Receive (SCORE) algorithm for receive beam steering.
Bordoni, Federica, Younis, Marwan, Gebert, Nicolas, Krieger, Gerhard, Makhoul Varona, Eduardo   +4 more
core  

Studies into the detection of buried objects (particularly optical fibres) in saturated sediment. Part 4: experimental investigations into the acoustic detection of objects buried in saturated sediment

, 2007
This report is the fourth in a series of five, designed to investigate the detection oftargets buried in saturated sediment, primarily through acoustical or acoustics-relatedmethods.
Evans, R.C.P.
core   +1 more source

Interferometric Synthetic Aperture Radar (SAR) Missions Employing Formation Flying [PDF]

, 2010
This paper presents an overview of single-pass interferometric Synthetic Aperture Radar (SAR) missions employing two or more satellites flying in a close formation.
Hajnsek, Irena, Moreira, Alberto, Younis, Marwan, Papathanassiou, Konstantinos, Krieger, Gerhard   +4 more
core   +1 more source