摘要
在深入分析差分跳频信号产生机理和信号特性的基础上,提出一种基于SPWVD的差分跳频信号参数估计方法,利用SPWVD算法对差分跳频信号进行时频分析,通过检测时频分析数组中相邻跳信号的频率跳变时间来估计跳驻留时间参数,进一步估计跳速、瞬时频率等参数。仿真结果表明,提出的算法可以对差分跳频信号实现有效的参数估计,且估计精度较高,处理计算量较少。
Based on analyzing the generation mechanism and characteristics of differential frequency hopping signal,a method for estimating the parameter of DFH signal utilizing SPWVD is proposed.The time and frequency domains distribution of DFH signal was analysed by SPWVD.The hop dwell time is estimated by detected frequency transforming moments between conjoint hop in time and frequency array.Further,the hop rate,instantaneous frequency and other parameter were estimated.The results of simulation show that the method could effectively estimate the parameter of DFH signal,has better accuracy of parameter estimation and less amount of computation.
出处
《火力与指挥控制》
CSCD
北大核心
2013年第1期10-13,共4页
Fire Control & Command Control
基金
国家自然科学基金(60802031)
教育部优秀人才计划基金(NCET-11-1013)
辽宁省高校创新团队计划基金资助项目(LT2011005)
关键词
差分跳频
SPWVD
参数估计
跳周期
differential frequency hopping
SPWVD
parameter estimating
hop period
