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sar图像的分辨率
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  sar image resolution
     Unified frame based on sparse prior for optical and SAR image resolution enhancement
     基于稀疏先验的光学及SAR图像的分辨率增强统一框架
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  “sar图像的分辨率”译为未确定词的双语例句
     The unified frame based on sparse prior for optical and SAR (synthetic aperture radar) image resolution enhancement is studied.
     研究了基于稀疏型先验的光学及SAR图像的分辨率增强的统一框架。
短句来源
  相似匹配句对
     In this paper,a Direct Transformation for F.
     从SAR图像F .
短句来源
     Statistical Decision Criterion for SAR Image Resolution
     SAR图像分辨率统计判别准则
短句来源
     Enhancing the Resolution of SAR Image by Extrapolation
     基于外推SAR图像分辨率增强算法
短句来源
     A novel statistical decision criterion for Synthetic Aperture Radar (SAR) image resolution is presented here.
     提出了合成孔径雷达(SAR)图像分辨率统计判别准则。
短句来源
     Hitting Effect Evaluation Based on High-Resolution SAR Images
     基于高分辨率SAR图像打击效果评估
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  sar image resolution
Nevertheless, SAR image resolution is much larger than the wavelength and the sensor is sensitive to large scale oceanographic phenomena.
      


Enhancing the resolution of SAR image can improve ATR significantly.An extrapolation algorithm is used to expand the 2-D bandwidth of the detailed image to enhance the resolution and the implementation steps are discussed in detail in this paper.The simulation results proves its validity.

提高合成孔径雷达 (SAR)图像的分辨率对自动目标识别等具有重要意义 .本文通过对图像的二维频谱进行外推 ,扩展了SAR系统的等效带宽以达到提高图像分辨率的目的 .文中给出了实现外推算法的详尽步骤并进行了仿真验证 ,仿真结果证实了算法的有效性

Distributed spaceborne SAR can produce SAR images with different scattering spectrum.The combination of these SAR images was used to improve the range resolution in final image product.The key point in its data processing was how to correctly join these different spectrums to a wider range spectrum.A new algorithm based on spectrum shift estimation for improving range resolution was proposed to process distributed spaceborne SAR data.The algorithm firstly estimated the spectrum shift between SAR complex images...

Distributed spaceborne SAR can produce SAR images with different scattering spectrum.The combination of these SAR images was used to improve the range resolution in final image product.The key point in its data processing was how to correctly join these different spectrums to a wider range spectrum.A new algorithm based on spectrum shift estimation for improving range resolution was proposed to process distributed spaceborne SAR data.The algorithm firstly estimated the spectrum shift between SAR complex images acquired by small satellites.Then the spectrum shift was compensated to these complex images in frequency field.Finally the compensated SAR images were added to form final image with improved range resolution.According to SAR complex image model,the new algorithm was derived.The steps to implement the algorithm mainly included image registration,spectrum shift estimation,spectrum shift compensation and image addition and every step was presented in detail.FFT were used in the algorithm to reduce its processing time.In last,computer simulation was employed to test the new algorithm.

分布式星载SAR利用不同视角回波信号之间地面散射频谱不同的特性来提高SAR图像的距离向分辨率 .其数据处理的关键就是如何将这些不同频段的信号相结合 ,得到具有更宽频谱的高分辨率图像 .本文提出了一种基于频谱偏移估计的分布式星载SAR提高距离向SAR图像分辨率的数据处理方法 .该方法的主要思想是在SAR复图像的基础上 ,通过精确的估计 ,得到SAR复图像间的距离向频谱偏移量 ,并根据该偏移量 ,在频域进行距离向频谱偏移补偿后将图像相加 .建立了分布式星载SAR单视复图像的信号模型 ,推导了基于频谱偏移估计提高SAR图像距离向分辨率的原理公式 ,给出了基于频谱偏移估计提高距离向分辨率的具体数据处理步骤 .最后采用仿真数据验证了理论推导的正确性和数据处理方法的有效性 .

In order to find ship target detection algorithm for high resolution SAR imagery, KSW double threshold segmentation method is applied to high resolution SAR imagery to detect ship. The experimental results show that this method is better than the traditional method. The selection of ship detection algorithm must be based on the resolution of SAR imagery.

寻找针对高分辨率 SAR图像的舰船目标检测算法 .利用 KSW双阈值分割技术 ,其效果比传统检测方法好 ,有利于进一步的目标分类和识别 .且必须根据 SAR图像分辨率来选择舰船检测算法

 
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