CAJ | 학술논문

对基于Wigner-Ville分布的LFM信号检测方法进行了总结,推导了加性高斯白噪声背景下的Wigner-Hough变换信噪比公式,并分别采用Wigner-Ville分布和Wigner-Hough变换对单线性调频信号、两线性调频信号进行了检测,然后对检测性能进行了分析.仿真结果表明,与Wigner-Ville分布相比,Wigner-Hough变换可有效抑制高斯白噪声的影响,同时对交叉项也有很好的消除作用.
대기우Wigner-Ville분포적LFM신호검측방법진행료총결,추도료가성고사백조성배경하적Wigner-Hough변환신조비공식,병분별채용Wigner-Ville분포화Wigner-Hough변환대단선성조빈신호、량선성조빈신호진행료검측,연후대검측성능진행료분석.방진결과표명,여Wigner-Ville분포상비,Wigner-Hough변환가유효억제고사백조성적영향,동시대교차항야유흔호적소제작용.
The method of linear frequency modulation (LFM) signal detection based on Wigner-Ville distribution is summed up, and the SNR formula of Wigner-Hough transform in the background of additive Gaussian white noise is derived. A detection of single linear FM signal and two-linear FM signal is conducted by using the Wigner-Ville distribution and the Wigner-Hough transform. The detected result is analyzed. Simulation results show that Wigner-Hough transform performs better than the Wigner-Ville distribution in the active suppression of Gaussian white noise, and has a good elimination effect on cross term.