首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Synthetic-aperture radar processing using fast factorized back-projection
【24h】

Synthetic-aperture radar processing using fast factorized back-projection

机译:合成孔径雷达处理使用快速分解后投影

获取原文
获取原文并翻译 | 示例
           

摘要

Exact synthetic aperture radar (SAR) inversion for a linear aperture may be obtained using fast transform techniques. Alternatively, back-projection integration in time domain can also be used. This technique has the benefit of handling a general aperture geometry. In the past, however, back-projection has seldom been used due to heavy computational burden. We show that the back-projection integral can be recursively partitioned and an effective algorithm constructed based on aperture factorization. By representing images in local polar coordinates it is shown that the number of operations is drastically reduced and can be made to approach that of fast transform algorithms. The algorithm is applied to data from the airborne ultra-wideband CARABAS SAR and shown to give a reduction in processing time of two to three orders of magnitude.
机译:可以使用快速变换技术获得用于线性孔径的精确合成孔径雷达(SAR)反转。或者,也可以使用在时域中的后投影积分。该技术具有处理通用孔径几何形状的益处。然而,在过去,由于繁重的计算负担,回投影很少被使用。我们表明,基于光圈分解构造的后投影积分可以递归地分区和构造的有效算法。通过表示本地极性坐标中的图像,示出了操作的数量大幅减少,并且可以进行以接近快速变换算法。该算法应用于来自机载超宽带CARABA SAR的数据,并示出了减少了两到三个数量级的处理时间。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号