基于Gabor谱方法的跳频信号参数盲估计  

Blind Parameter Estimation of Frequency-Hopping Signals Based on Gabor Spectrum

作　　者：张曦[1] 杜兴民[1] 闫涛[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《现代防御技术》2007年第4期89-94,99,共7页Modern Defence Technology

基　　金：国防科技重点实验室基金(51473030105JB3201)

摘　　要：提出了一种基于Gabor谱的未知跳频信号参数盲估计方法。该方法利用Gabor谱能量集中、时频分辨率高、交叉项干扰小的特点,在未知任何先验参数的情况下,能够准确估计出跳频信号的跳频频率、跳变时刻和跳频信号驻留时间等参数。通过计算机仿真得到了较为准确的估计结果,验证了该算法的有效性。A new method based on Gabor Spectrum to estimate the parameters of unknown frequency hopping （FH） signal was proposed. Considering the advantages of concentration of energy, high resolution in time-frequency domain and eliminating cross-terms interference, the parameters of FH signals can be estimated such as hop timing, hopping frequencies and hop duration without knowing any a priori knowledge. The simulation results show that the proposed method could estimate the FH parameters effectively.

关 键 词：Gabor谱 跳频 参数盲估计 时频分析 

分 类 号：TN914.4[电子电信—通信与信息系统] TN911.7[电子电信—信息与通信工程]