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

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- 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.

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