Time-frequency characteristics based motion estimation and imaging for high speed spinning targets via narrowband waveforms
Time-frequency characteristics based motion estimation and imaging for high speed spinning targets via narrowband waveforms
复制标题
基于时频特性的窄带波形高速旋转目标运动估计和成像
DOI：
10.1007/s11432-010-4027-4
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发表时间：
2010-08-01
影响因子：
8.8
通讯作者：
Bao Zheng
中科院分区：
文献类型：
--
作者：
Zhang Lei;Li YaChao;Bao Zheng
研究了利用时频特性对高速旋转目标进行运动参数估计和逆合成孔径雷达（ISAR）成像。假设平移运动是补偿与可用的运动补偿技术，然后平移运动和旋转运动的残留部分估计的时频特性的基础上，高精度。结合运动估计过程，提出了一种新的相干时频谱强度重分布方法--相干单距离多普勒干涉法（CSRDI），该方法比现有方法具有更高的分辨率和更低的信噪比。数值仿真验证了所提方法的有效性和高精度。
This paper focuses on the motion parameters estimation and inversed synthetic aperture radar (ISAR) imaging for the high-speed spinning targets via the time-frequency characteristics. Assuming that the translational motion is compensated with the available motion compensation techniques, then the residual part of translational motion and the spinning motion are estimated with high precision based on the time-frequency characteristics. Combining with the procedure of the motion estimation, a novel coherent time-frequency spectrum intensity redistribution method, coherent single range Doppler interferometry (CSRDI), is proposed, which provides higher resolution and sustain lower signal to noise rate (SNR) than the current approach. Numerical simulation confirms the validity and high precision of the proposed approaches.