摘要
提出了基于二次型变换的Chirp信号的处理方法。首先将非平稳的Chirp信号经过二次型变换化为平稳信号,得到了该平稳信号的相关函数表达式。再根据该相关函数矩阵的奇异值分解的性质和特点,提出了在有色噪声背景下用于估计Chirp信号参数的互谱SVD方法。仿真实验表明,该方法与Radon-Wigner变换方法所得到的结果相近,证明了该方法的正确性与有效性。
Treatment method of chirp signal based on quadratic transformation is proposed. At first non-stationary chirp signal is turned into stationary signal and the correlation functions about this stationary signal is obtained. According to the characteristic of its Singular Value Decomposition, the method of cross-spectrum MUSIC used to estimate the parameters is put forward. The simulation results show the correctness and effectiveness of the proposed method by comparing with the Radon-Wigner method.
出处
《电工电能新技术》
CSCD
北大核心
2005年第4期1-4,33,共5页
Advanced Technology of Electrical Engineering and Energy
关键词
信号参数估计
有色噪声
二次型变换
相关函数
estimation of signal parameter
colored noise
quadratic transformation
correlation function
