• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>The 11th World Multi-Conference on Systemics, Cybernetics and Informatics(WMSCI 2007) Jointly with the 13th International Conference on Information Systems Analysis and Synthesis(ISAS 2007) >An Improved Range-Doppler Algorithm for GEO Spaceborne-Airborne Bistatic SAR Imaging
【24h】

An Improved Range-Doppler Algorithm for GEO Spaceborne-Airborne Bistatic SAR Imaging

机译：GEO星载机载双基地SAR成像的改进距离多普勒算法

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper analyzes a bistatic synthetic aperture radar (SAR) system based upon a geostationary transmitter and small "receive-only" SAR systems mounted on airplanes or unmanned aerial vehicles (UAVs), namely GEO Spaceborne-Airborne Bistatic SAR. The transmitter in geostationary orbit remains fixed relative to the illuminated scene. In this case, the constant distance from the target to the receiver adds a delay which depends on the target complete position (azimuth, range and height). So the efficient SAR imaging algorithms (Chirp scaling, Range Doppler, Omega-K, etc) are not suitable to accurately focus bistatic SAR data. This paper proposes an improved Range Doppler algorithm adapted to the bistatic fixed-transmitter case. It divides the echo data in the azimuth direction and calculates the echo's Doppler parameters nonlinearly. The implemented algorithms will be evaluated and verified with simulated scenes formed by ideal targets.
机译：本文分析了基于对地静止发射机和安装在飞机或无人飞行器（UAV）上的小型“仅接收” SAR系统的双基地合成孔径雷达（SAR）系统，即GEO星空机载双基地SAR。对地静止轨道上的发射器相对于照明场景保持固定。在这种情况下，从目标到接收器的恒定距离会增加一个延迟，该延迟取决于目标的完整位置（方位角，范围和高度）。因此，有效的SAR成像算法（线性调频缩放，距离多普勒，Omega-K等）不适合准确聚焦双基地SAR数据。本文提出了一种适用于双基地固定发射机情况的改进的距离多普勒算法。它沿方位角方向划分回波数据，并非线性计算回波的多普勒参数。所实现的算法将通过理想目标形成的模拟场景进行评估和验证。

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