国防科技大学学报Issue(1)：57-61,5.DOI:10.11887/j.cn.201401011
方位多相位中心SAR信号重建误差分析
Reconstruction error of azimuth multiple-phase-center
摘要
Abstract
Influence of array errors of azimuth multiple-phase-center (AMPC)synthetic aperture radar (SAR)on signal reconstruction performance is investigated.The array errors were modeled as stochastic process.In combination with least-square (LS)algorithm,the analytical expression of the reconstruction error power spectrum was derived.Then,the analytical expressions of signal to noise ratio (SNR)and azimuth ambiguity to signal ratio (AASR)were obtained.Experiment results confirm the validity of the theoretical analyses.Analytical results indicate that the image quality of AMPC SAR can be improved by decreasing the reconstruction coefficient when the pulse repetition frequency (PRF)increases. The approaches and results are helpful to the system design and the image quality evaluation of AMPC SAR.关键词
合成孔径雷达/方位多相位中心/阵列误差/信噪比/方位模糊比Key words
synthetic aperture radar/azimuth multiple-phase-center/array errors/signal to noise ratio/azimuth ambiguity to signal ratio引用本文复制引用
马喜乐,董臻,何峰,孙造宇,梁甸农..方位多相位中心SAR信号重建误差分析[J].国防科技大学学报,2014,(1):57-61,5.基金项目
国家自然科学基金资助项目 （）
