- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 China International SAR Symposium (CISS) - Shanghai (2018.10.10-2018.10.12)] 2018 China International SAR Symposium (CISS) - A Fast Target Detection Method for SAR Image Based on Electromagnetic Characteristics
摘要： Target detection for remote sensing images which contain optical images and radar images has attracted lots of relative researchers. With the development of deep learning, target detection for optical images has been developing towards high accuracy and real-time detection. High resolution optical images reflect geometric features of the object. Unlike optical images, SAR images reflect the electromagnetic characteristics of the target, so the SAR image detection which uses optical image detection algorithm will lead to weak detection performance. This paper studies a fast target detection algorithm for SAR images which fused electromagnetic characteristics and geometric features through support vector machine. The algorithm is based on the Faster R-CNN framework enabling nearly cost-free target detection.
关键词： real-time detection,scattering center model,electromagnetic characteristics,Faster R-CNN,target detection
更新于2025-09-23 15:22:29
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Angular Glint Error Simulation Using Attributed Scattering Center Models
摘要： Angular glints are induced essentially by the superposition of scattering responses from multiple scattering centers and usually fluctuate quickly and widely with the aspect angles for complex targets change. This paper presents angular glint simulation of complex conducting targets using attributed scattering centers. The formulae for linear glint errors (LGEs) are derived based on the parametric models of attributed scattering centers and can be applied for real-time LGE simulation. Our analyses and numerical experiments show that the LGE simulation requires more precise scattering center modeling than the radar imaging simulation does. To ensure the accuracy of the LGE simulation, a forward approach that uses induced currents on conducting targets is used to precisely extract the scattering centers. The numerical results show that the LGE simulation based on the developed scattering center model has high accuracy. More importantly, the scattering center model developed for sparse aspect angles can be used to simulate LGEs for dense aspect angles, as required for complex targets, which leads to high efficiency in simulating LGEs.
关键词： linear glint error,Angular glint,scattering center model
更新于2025-09-10 09:29:36