Results 41 to 50 of about 1,248,801 (164)
Multidimensional Radar Waveforms: A New Paradigm for the Design and Operation of Highly Performant Spaceborne Synthetic Aperture Radar Systems [PDF]
, 2007 This paper introduces and analyses the innovative paradigm 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 ...
Alberto Moreira +5 more
core +1 more source
Seafloor Sediment Detection with Sidescan Sonar Image Based on YOLO11 and YOLO26
Electronics Letters, Volume 62, Issue 1, January/December 2026.This paper focuses on the demand of seafloor sediment detection using SSS images. It systematically compares the architectural differences and comprehensive performance of YOLO11 and YOLO26. The two models form differentiated adaptation for different application scenarios. ABSTRACT The study of seafloor geomorphology is the core foundation for decoding
Dandan Liu +3 more
wiley +1 more source
Evaluation of YOLO Key Modules Using Synthetic Aperture Images
Electronics Letters, Volume 62, Issue 1, January/December 2026.Four typical YOLO modules based on YOLOv8, YOLOv11, YOLOv12 and YOLOv13 are focused on in this letter. Significant potential is owned by the work in this letter to provide some important conclusions for users choice. Experimental support and data preparation are also provided for future YOLO architecture optimisation research. ABSTRACT Target detection
Dandan Liu, Yuxiang Ding, Zhiping Xu
wiley +1 more source
Improved YOLOv8n‐seg for Instance Segmentation of the Sonar Images of Marine Debris
IET Image Processing, Volume 20, Issue 1, January/December 2026.An improved YOLOv8n‐seg for instance segmentation of the sonar images of marine debris is proposed. In the improved YOLOv8n‐seg, a new backbone is designed by proposing and introducing the C2PC‐Cone to replace the module C2f in the backbone of YOLOv8n‐seg, and a new neck is designed by replacing the module C2f of YOLOv8n‐seg with the VoV‐GSCSP, and a ...
Yongjie Jiang +3 more
wiley +1 more source
Histogram Layers for Synthetic Aperture Sonar Imagery
, 2022 Synthetic aperture sonar (SAS) imagery is crucial for several applications, including target recognition and environmental segmentation. Deep learning models have led to much success in SAS analysis; however, the features extracted by these approaches ...
Peeples, Joshua +3 more
core +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
doaj +1 more source
Remote Sensing, 2019 In recent decades, imaging sonar has been the most widely employed remote sensing instruments in the field of underwater detection. The multibeam echo sounder (MBES) plays an important role in obtaining high-accuracy seabed topography.
Bo Wei, Haisen Li, Tian Zhou, Siyu Xing
doaj +1 more source
Back Projection Algorithm for Multi-Receiver Synthetic Aperture Sonar Based on Two Interpolators
Journal of Marine Science and Engineering, 2022 The back projection (BP) algorithm is characterized by its high performance for multi-receiver synthetic aperture sonar (SAS). For this reason, it is usually used to evaluate the imaging performance of Fourier-domain methods.
Xuebo Zhang, Peixuan Yang
doaj +1 more source
Dual Frequency Side Scan Sonar Image Fusion for Deep‐Learning Based Underwater Target Detection
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.Traditional single‐frequency side‐scan sonar faces trade‐offs between imaging resolution and detection range, along with issues such as speckle noise and target–shadow coupling. To address these, this study proposes D2FNet, a dual‐domain fusion model integrating three key modules, which—tested on a new dataset of over 9000 paired sea‐trial images ...
Jiajun Xian +9 more
wiley +1 more source
An autonomous boat based synthetic aperture sonar [PDF]
, 2007 This paper describes a Synthetic Aperture Sonar (SAS) system being developed at the University of Porto to be used in a small autonomous boat for the survey of shallow water environments, such as rivers, deltas, estuaries and dams.
Nuno Cruz +3 more
core +1 more source