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中文摘要：
目标加速运动会使雷达回波多普勒频谱展宽,导致傅里叶频谱分析方法信噪比下降、分辨率降低。为此给出了基于Radon-Wigner变换（RWT）的加速目标脉冲多普勒回波提取方法。论述了加速机动目标的脉冲多普勒雷达回波模型和傅里叶变换频谱分析方法,给出了基于RWT的雷达多普勒二次相位信号提取方法。对傅里叶变换和RWT方法进行了仿真比较,表明RWT具有较强的输出信噪比和速度加速度分辨能力。
英文摘要：
The target＇s accelerated motion causes the spectrum broadening of Doppler echo,which results in the reduction of signal-to-noise ratio and resolution for the Fourier spectral analysis method.The Doppler echo extraction of accelerated target based on Radon-Wigner transform（RWT） is given in this paper.Firstly,the pulse Doppler radar echo model of accelerated target and the Fourier spectral analysis method are given.Secondly,the Doppler quadratic phase extraction of radar echo signal based on RWT is given.Finally,the simulation comparisons of Fourier transformation and RWT method are offered,which indicate that RWT has the strong output signal-to-noise ratio and resolution of velocity and acceleration.
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