计算机应用研究2017，Vol.34Issue(1)：163-165,3.DOI:10.3969/j.issn.1001-3695.2017.01.035
基于MF-FRFT伪码捕获算法研究
Pseudo-code acquisition algorithm based on MF-FRFT
摘要
Abstract
Aiming at question that the received signal in high dynamic environment contained large Doppler frequency and its rate of change,the traditional methods could not acquisition the rate of change of Doppler frequency for effective compensa-tion,this paper proposed a new scheme that high dynamic target detection method based on fractional Fourier transform.This method used fractional Fourier transform of linear frequency modulation signal with the characteristics of energy in the optimal order times,combined the matched filter and the discrete fractional Fourier transform to process the signal,quickly and accu-rately estimated the Doppler frequency and its rate of change.The theoretical analysis and simulation shows that this method can solve the problem that the traditional methods can not acquisition the rate of change of Doppler frequency for effective com-pensation,and improves the detection SNR and receiver’s capture probability.关键词
高动态/捕获/线性调频/分数阶傅里叶变换/估计Key words
high dynamic/acquisition/linear frequency modulation/fractional Fourier transform/estimate分类
信息技术与安全科学引用本文复制引用
黄明军,王永民,牛家红..基于MF-FRFT伪码捕获算法研究[J].计算机应用研究,2017,34(1):163-165,3.基金项目
国家自然科学基金资助项目 （）
