摘要
对于混杂着噪声的跳频信号,将其进行频率调制(FM)得到其解析信号,再对解析信号应用基于WVD的峰值检测算法,可以有效地恢复原始信号。对于包含高斯白噪声的信号,在信噪比较低的情况下,提出了迭代进行峰值检测的估计方法,仿真结果表明该迭代算法在较低的信噪比情况下也可以得到理想的结果。
Time-Frequency peak filtering （TFPF） allows the reconstruction of signals from the Frequency Hop signal （FH） corrupted by additive noise by encoding the noisy signal as the instantaneous frequency of a frequency modulated （FM） analytic signal. When the SNR is low, reapplication of the procedure to the filtered signal could get good results, the simulations using MATLAB shows clean recovery of the signals in noise level down to a SNR of -4dB.
出处
《信息安全与通信保密》
2006年第6期98-99,102,共3页
Information Security and Communications Privacy
