摘要
本文提出一种基于相位补偿的匹配变换算法 ,通过构造匹配函数使信号能量在变换域内达到聚集 ,从而有效地检测信号并估计出相应参数 .本文以线性调频信号为例作了具体分析 ,并和其它方法进行比较 ,说明该方法具有更好的稳健性 ,较低的信号检测旁瓣以及良好的信号分辨能力 .针对具有多个参数的复杂信号的检测及估计问题 ,本文将匹配变换和遗传算法相结合 ,有效估计出信号参数同时提高了运算速度 .
In this paper,a new Matched Transform based on phase compensation is proposed.By constructing the matched function,this new transform can make the signal energy concentrate in the transform domain.And as the result,the good performance of signal detection and parameters estimation can be obtained.The chirp signal is analyzed in detail as an example.The comparison with other methods shows that the new algorithm is more robust and can obtain the lower sidelobes and better resolution.In addition,the Matched Transform combined with Genetic Algorithm is also studied to detect and estimate the complex signal.The effective parameters estimation and high convergent speed can be achieved.The simulation results prove the validity of the whole algorithm.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第2期318-320,共3页
Acta Electronica Sinica
关键词
匹配变换
相位补偿
线性调频信号
遗传算法
matched transform
phase compensation
chirp signal
genetic algorithm
