摘要
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。
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.
出处
《雷达学报（中英文）》
CSCD
2016年第1期72-81,共10页
Journal of Radars
基金
国家自然科学基金(61301280
61301293)
高等学校博士学科点专项科研基金(20120203130001)~~
