基于Radon-WVD变换的编队目标架次识别

赵学云; 刘峥

doi:10.3724/SP.J.1146.2005.00816

基于Radon-WVD变换的编队目标架次识别

doi: 10.3724/SP.J.1146.2005.00816

赵学云,
刘峥

基金项目:

国家部级基金(51483010104DZ0102)资助课题

计量
- 文章访问数: 3396
- HTML全文浏览量: 58
- PDF下载量: 769
- 被引次数: 0
出版历程
- 收稿日期: 2005-07-11
- 修回日期: 2006-03-24
- 刊出日期: 2007-03-19

Target Number Detection Based on Radon-WVD Transform

摘要

摘要: 针对常规低分辨雷达，研究了编队目标回波的多普勒频率变化特征，提出了采用Radon-WVD法，在时频域对编队目标的整体特性(调频率)进行快速准确的估计。该方法的估计结果不但不受WVD交叉项的影响，而且由于Radon变换的积累特性使得Radon-WVD变换法相对WVD有更好的抗噪声性能。仿真实验验证了该方法的有效性，成功地实现了多架编队飞机架次识别。
- 低分辨雷达;架次识别;时频分析;Radon变换
Abstract: In this paper, the variation of Doppler frequency of the group flying targets is analyzed. For low resolution radars, the echoes of targets can be modeled as Linear Frequency Modulated (LFM) signals. A method for detecting the number of targets is proposed. A fast estimation of character of the whole in the time-frequency domain can be obtained through the Radon-WVD (Radon-Wigner Ville Distribution). The cross-terms of WVD have no influence on the result of the estimation. The method performs well under either higher SNR or lower SNR. The experimental results demonstrate the validity of the method.

HTML全文

参考文献(1)

[1] 邢孟道, 保铮. 低分辨雷达的一维横向成像及提高分辨率的方法[J]. 西安电子科技大学学报, 2000, 27(6): 700-704. Xing Meng-dao and Bao Zheng. One dimensional corss-range imaging and the method of improving resolution for a low resolution radar target. Journal of Xidian University (Natural Science), 2000, 27(6): 700-704 [2] 姜正林, 保铮等. 低分辨雷达编队目标分辨新方法[J]. 西安电子科技大学学报, 2001, 28(4): 482-486. Jiang Zheng-lin, Bao Zheng, et al.. Resolving multiple targets of the low resolution radar. Journal of Xidian University (Natural Science), 2000, 27(6):700-704 [3] 苏晋, 陈付彬等. 基于Relax谱估计的波束内多目标分辨[J].系统工程与电子技术, 2003, 25(11): 1314-1317. Su Jin, Chen Fu-bin, et al.. Multiple moving targets resolving based on relax spectrum estimation. Systems Engineering and Electronics, 2003, 25(11): 1314-1317 [4] 孙晓兵, 保铮等. 时-频信号分析与雷达的多目标分辨[J]. 系统工程与电子技术, 1997, 19(11): 12-16. [5] 姬红兵, 李杰等. 基于分数阶傅立叶变换的编队目标架次识别[J]. 西安电子科技大学学报, 2000, 27(4): 482-486. [6] 胡昌华, 周涛等. 基于MATLAB的系统分析与设计时频分析[M]. 西安: 西安电子科技大学出版社, 2000, 164-167, 112-113. [7] Wood J C, Barry D T. Linear signal synthesis using the Radon-Wigner transform[J].IEEE Trans. on Signal Processing.1994, 42(8):2105-2111 [8] Wood J C, B D T. Radon transformation of time-frequency distribution for analysis of multi-component signals[J].IEEE Trans. on Signal Processing.1994, 42(11):3166-3177 [9] 邹红星, 周小波等. 基于Radon-STFT变换的含噪LFM信号子空间分解[J]. 电子学报, 1999, 27(12): 4-8. [10] Wang Minsheng, Chen A K, and Chui Charles K. Linear frequency-modulated signal detection using radon- ambiguity transform[J].IEEE Trans. on Signal Processing.1998, 46(3):571-586

施引文献

资源附件(0)

访问统计