Guojun Zhai
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View article: Underwater Side-Scan Sonar Target Detection: An Enhanced YOLOv11 Framework Integrating Attention Mechanisms and a Bi-Directional Feature Pyramid Network
Underwater Side-Scan Sonar Target Detection: An Enhanced YOLOv11 Framework Integrating Attention Mechanisms and a Bi-Directional Feature Pyramid Network Open
Underwater target detection is pivotal for marine exploration, yet it faces significant challenges because of the inherent complex underwater environment. Sonar images are generally degraded by noise, exhibit low resolution, and lack promi…
View article: A new tropospheric delay combination prediction model based on time series decomposition and deep learning
A new tropospheric delay combination prediction model based on time series decomposition and deep learning Open
Zenith tropospheric delay (ZTD) prediction is of great significance for high-precision navigation. However, ZTD modeling has proved to be challenging due to the presence of linear and nonlinear characteristics. In this paper, we propose a …
View article: Comparison of Marine Gravity Measurements from Shipborne and Satellite Altimetry in the Arctic Ocean
Comparison of Marine Gravity Measurements from Shipborne and Satellite Altimetry in the Arctic Ocean Open
To understand the influence of sea ice on shipborne gravity measurements and the accuracy of the satellite-altimetry-derived gravity field in the Arctic Ocean, we compared shipborne gravity measurements with those obtained from satellite a…
View article: Unsupervised Domain Adaption for High-Resolution Coastal Land Cover Mapping with Category-Space Constrained Adversarial Network
Unsupervised Domain Adaption for High-Resolution Coastal Land Cover Mapping with Category-Space Constrained Adversarial Network Open
Coastal land cover mapping (CLCM) across image domains presents a fundamental and challenging segmentation task. Although adversaries-based domain adaptation methods have been proposed to address this issue, they always implement distribut…
View article: Magnetic Interference Analysis Caused by Magnetic Survey Pod Track Fluctuation in Helicopters
Magnetic Interference Analysis Caused by Magnetic Survey Pod Track Fluctuation in Helicopters Open
The track fluctuation of helicopter pod used for magnetic survey can cause interference with magnetic field measurement results.By simulating the small fluctuation of inclination angle and drift angle，the pod track fluctuation in airborne …