基于频谱压缩接收的宽带/超宽带线性调频信号参数估计  

Parameters estimation of Wideband/ Ultra-Wideband LFM Signal Based on Spectrum Compressing Receiving

作　　者：沈显祥[1] 叶瑞青[1] 唐斌[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子与信息学报》2007年第1期23-25,共3页Journal of Electronics & Information Technology

基　　金：国家"973"计划资助课题

摘　　要：该文提出了一种新的宽带/超宽带线性调频信号的接收方法,它将宽带/超宽带线性调频信号通过射频通道的频谱压缩网络变成窄带信号,数字域用逆频谱压缩函数对压缩信号进行非线性重构,原线性调频信号的调制斜率和初始频率可通过重构信号精确估计。计算机仿真证实了算法的有效性。An new method, which compresses the spectrum of the wideband / ultra -wideband LFM signal in radio channel to turn the wideband/ultra -wideband signal into the narrowband signal, is presented in this paper. Using the inverse compression function, the compressed signal is reconstructed by nonlinear interpolation in digital domain. Moreover, the modulation slope and initial frequency of the original signal can still be estimated from the reconstructed LFM signal precisely. Computer simulation shows its validity.

关 键 词：频谱压缩 信号重构 调制斜率 初始频率 

分 类 号：TN957.51[电子电信—信号与信息处理]