基于线性调频步进信号的高速目标ISAR成像

高昭昭; 邢孟道; 张守宏; 张焕颖

doi:10.3724/SP.J.1146.2007.00894

基于线性调频步进信号的高速目标ISAR成像

doi: 10.3724/SP.J.1146.2007.00894

基金项目:

国家自然科学青年基金(60502044)和教育部重点项目(20051009)资助课题

计量
- 文章访问数: 3368
- HTML全文浏览量: 116
- PDF下载量: 878
- 被引次数: 18
出版历程
- 收稿日期: 2007-06-07
- 修回日期: 2007-11-19
- 刊出日期: 2008-12-19

ISAR Imaging of High Speed Targets Based on LMSF Signal

摘要

摘要: 该文讨论了一种利用线性调频步进(LMSF)雷达信号通过频域带宽合成以进行高距离分辨率逆合成孔径雷达(ISAR)成像的方法。文中建立了高速目标的回波模型。为了精确估计高速运动目标运动参数，给出了利用包络对齐和多普勒中心估计拟合目标运动轨迹的方法。针对ISAR中目标回波的特点，对原始的多普勒中心估计方法进行了改进，提高了运动参数估计精度。最后给出了处理流程，并用仿真结果验证此种方法的有效性。
- 逆合成孔径雷达 /
- 线性调频步进 /
- 频域带宽合成 /
- 运动参数估计
Abstract: To obtain the higher range resolution Inverse Synthetic Aperture Radar (ISAR) image, a method by combining the bandwidth of the Linearly Modulated Stepped Frequency (LMSF) radar signal in frequency domain is discussed. The model of high speed moving targets is proposed. In order to estimate the target motion parameters accurately, the method employing envelop alignment and Doppler center estimation is provided to fit the track of moving target. Based on the characteristic of target echo in ISAR, the original method of Doppler center estimation is ameliorated to increase the motion parameter estimation precision. Finally, the processing scheme is proposed, and the simulation results show that the method is effective.
- I /
- n /
- v

HTML全文

参考文献(1)

[1] Wehner D R. High Resolution Radar [M]. 2ed, Norwood, MA,Artech House, 1995: 3-5. [2] 龙腾, 毛二可, 何佩琨. 调频步进雷达信号分析与处理[J]. 电子学报, 1998, 26(12): 84-88.Long T, Mao E, and He P. Analysis and processing ofmodulated frequency stepped radar signal[J]. ActaElectronica Sinica, 1998, 26(12): 84-88. [3] Schimpf H and Wahlen A. High range resolution by means ofsynthetic bandwidth generated by frequency-steppedchirps[J].IEE Electronics Letters.2003, 39 (18):1346-1348 [4] Chen H, Liu Y, and Li X. Mathematics of synthesizing rangeprofile[J].IEEE Trans. on Signal Processing.2007, 55(5):1950-1955 [5] Wilkinson A J, Lord R T, and Inggs M R. Stepped-frequencyprocessing by reconstruction of target reflectivityspectrum[C]. Proceedings of the 1998 IEEE South AfricanSymposium on Communications and Signal Processing, CapeTown, South Africa, 7-8 Sep. 1998: 101-104. [6] French A. Improved high range resolution profiling of aircraftusing stepped-frequency waveforms with an S-band phasedarray radar[C]. 2006 IEEE Radar Conference, Verona, NY,USA, 24-27 April 2006: 69-75. [7] 丁鹭飞, 耿富录. 雷达原理[M]. 西安, 西安电子科技大学出版社, 1995: 246-247. [8] 邢孟道, 保铮, 郑义明. 用整体最优准则实现ISAR 成像的包络对齐[J]. 电子学报, 2001, 29(12A): 1807-1811.Xing M, Bao Z, and Zheng Y. Range alignment using globaloptimization criterion in ISAR imaging[J]. Acta ElectronicaSinica, 2001, 29(12A): 1807-1811. [9] 邢孟道, 保铮. 基于运动参数估计的SAR 成像[J]. 电子学报,2001, 29(12A): 1824-1828.Xing M and Bao Z. Motion parameter estimation based SARimaging[J]. Acta Electronica Sinica, 2001, 29(12A):1824-1828.

施引文献

期刊类型引用(3)

1.	廖志鹏，段克清，何锦浚，邱梓洲，王永良. 基于可解释深度卷积网络的空时自适应处理方法. 雷达学报. 2024(04): 917-928 . 百度学术
2.	郭佳佳，廖桂生，杨志伟，杜文韬. 利用广义内积值迭代加权的空时协方差矩阵估计方法. 电子与信息学报. 2014(02): 422-427 . 本站查看
3.	范西昆，曲毅. 知识辅助机载雷达杂波抑制方法研究进展. 电子学报. 2012(06): 1199-1206 . 百度学术