摘要
传统的SAR方位预滤波器采用的是固定系数的FIR低通滤波 在实际的飞行成像中 ,这类固定系数的滤波器会在方位向产生比较严重的幅度调制 ,进而严重影响实时成像质量 提出的SAR方位向自适应预滤波器克服了固定系数滤波器造成的图像方位调制干扰 。
Fixed coefficient FIR has been applied to conventional SAR azimuth preprocessing But in practical usage, the severe azimuth modulation may arise when the motion of the carrier is not ideal In this paper, an adaptive azimuth preprocessing method is put forwand, which can greatly overcome the azimuth modulation of SAR signal Since this method can a meliorate the SNR of the SAR system, the auto-focus performance will be improved greatly The result is satisfactory
出处
《计算机研究与发展》
EI
CSCD
北大核心
2003年第1期1-5,共5页
Journal of Computer Research and Development
基金
国家自然科学重大项目基金 (NFNS 698962 5 0 2 )
