Higher order nonlinear chirp scaling algorithm for medium Earth orbit synthetic aperture radar
作者: Pengbo WangWei LiuJie ChenWei YangYu Han
作者单位: 1Beihang University
2University of Sheffield
刊名: Journal of Applied Remote Sensing, 2015, Vol.9 (1), pp.096084-096084
来源数据库: SPIE-the International Society for Optical Engineering
DOI: 10.1117/1.JRS.9.096084
关键词: synthetic aperture radarmedium Earth orbitsynthetic aperture radar signal processing
原始语种摘要: Due to the larger orbital arc and longer synthetic aperture time in medium Earth orbit (MEO) synthetic aperture radar (SAR), it is difficult for conventional SAR imaging algorithms to achieve a good imaging result. An improved higher order nonlinear chirp scaling (NLCS) algorithm is presented for MEO SAR imaging. First, the point target spectrum of the modified equivalent squint range model-based signal is derived, where a concise expression is obtained by the method of series reversion. Second, the well-known NLCS algorithm is modified according to the new spectrum and an improved algorithm is developed. The range dependence of the two-dimensional point target reference spectrum is removed by improved CS processing, and accurate focusing is realized through range-matched filter and...
全文获取路径: SPIE 

  • aperture 
  • synthetic 合成的
  • radar 雷达
  • scaling 按比例缩小
  • chirp 
  • algorithm 算法
  • SAR Safe Address Register
  • medium 介质
  • nonlinear 非线性的
  • squint 偏斜