OFDM-ISAR的稀疏优化成像与运动补偿

TN957.52; 正交频分复用(OFDM)技术可用以获得无干扰的高分辨距离雷达成像，该文研究利用OFDM波形实现非合作目标的逆合成孔径雷达(ISAR)成像和运动补偿问题。文中讨论了目标平动对循环前缀(CP)长度的影响，利用了ISAR成像的本质稀疏性同时实现成像重建和相位补偿。实验表明，基于CP的OFDM-ISAR运动补偿算法可有效克服OFDM-ISAR成像的距离干扰和运动误差影响，具有较好的稳健性和精确性。...

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Bibliographic Details
Published in雷达学报 Vol. 5; no. 1; pp. 72 - 81
Main Author 吴敏 张磊 刘松杨 邢孟道
Format Journal Article
LanguageChinese
Published 西安电子科技大学西安 710071 2016
Subjects
循环前缀（CP）
正交频分复用（OFDM）
运动补偿
逆合成孔径雷达（ISAR）成像
Inverse Synthetic Aperture Radar (ISAR) imaging
运动补偿
正交频分复用(OFDM)
逆合成孔径雷达(ISAR)成像
Motion compensation
Cyclic Prefix (CP)
循环前缀(CP)
Orthogonal Frequency Division Multiplexing (OFDM)
Online AccessGet full text
ISSN2095-283X
DOI10.12000/JR16017

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Summary:TN957.52; 正交频分复用(OFDM)技术可用以获得无干扰的高分辨距离雷达成像，该文研究利用OFDM波形实现非合作目标的逆合成孔径雷达(ISAR)成像和运动补偿问题。文中讨论了目标平动对循环前缀(CP)长度的影响，利用了ISAR成像的本质稀疏性同时实现成像重建和相位补偿。实验表明，基于CP的OFDM-ISAR运动补偿算法可有效克服OFDM-ISAR成像的距离干扰和运动误差影响，具有较好的稳健性和精确性。
Bibliography:10-1030/TN
Orthogonal Frequency Division Multiplexing（OFDM） technology has been utilized in radar imaging to obtain high-resolution range profiles without inter-range cell interference.In this study,we establish a novel algorithm for Inverse Synthetic Aperture Radar（ISAR） imaging of a non-cooperative target using OFDM waveforms.We also achieve motion compensation and image enhancement with sparse reconstruction optimization.Utilizing sparse reconstruction optimization,we can simultaneously achieve high-precision OFDM-ISAR imaging and also correct phase errors.Extensive experimentation confirms that the proposed method can effectively overcome range interference and phase errors in OFDM-ISAR imaging,providing optimal robustness and precision.
Inverse Synthetic Aperture Radar（ISAR）imaging;Orthogonal Frequency Division Multiplexing（OFDM）;Cyclic Prefix（CP）;Motion compensation
Wu Min,Zhang Lei,Liu Songyang,Xing Mengdao（Xidian University, Xi＇an 710071, China）
ISSN:2095-283X
DOI:10.12000/JR16017