SAR雷达色散效应抑制的自适应匹配滤波算法
Adaptive Matching Filtering Algorithm for SAR Radar Dispersion Effect Suppression
肖晖 1尹畅 2罗茜今 2王博2
作者信息
- 1. 南京航空航天大学航天学院,江苏 南京,210016;南京晓庄学院环境科学学院,江苏 南京,211171
- 2. 南京航空航天大学航天学院,江苏 南京,210016
- 折叠
摘要
星载合成孔径雷达(synthetic aperture radar,SAR)具备强穿透性和不受光照限制等优势,针对在高频波段星载SAR和地面通信时受色散效应影响,产生的信号畸变、失真、幅度起伏和相位起伏问题,提出了一种基于自适应滤波的校正匹配滤波算法,分析了信号失真的特征,对脉冲波形进行校正.实验结果表明,该算法有效补偿了时间延迟和相位畸变,纠正了脉冲信号波形失真.
Abstract
Spaceborne synthetic aperture radar(SAR)has the advantages of strong penetrability and no limitation of illu-mination.Aiming at the problems of signal distortion,signal inaccuracy,amplitude fluctuation and phase fluctuation caused by dispersion effect in high-frequency band during the commu-nication of spaceborne SAR and ground,we propose a correc-tive matching filtering algorithm based on adaptive filtering,and analyze the characteristics of signal distortion and correct the pulse waveform.The experimental results show that the proposed algorithm can effectively compensate the time delay and phase distortion and correct the pulse signal waveform dis-tortion.
关键词
合成孔径雷达(synthetic/aperture/radar,SAR)/高频波段/色散效应/自适应滤波Key words
synthetic aperture radar(SAR)/high frequency band/dispersion effect/adaptive filtering引用本文复制引用
基金项目
自然资源部国土卫星遥感应用重点实验室开放基金(KLSMNR-G202317)
国家自然科学基金(41701531)
出版年
2024
NETL
NSTL
万方数据