摘要
针对目前部分老式侦察设备采集的谱图无法利用现有算法完成跳频信号分选问题,提出一种仅有谱图信息输出的多网台信号分选工程实现方法。首先,利用信号与噪声差异,通过二维CFAR方法对谱图进行降噪,并对分裂信号进行恢复;其次,提取降噪谱图信号的出现时间、结束时间、平均电平、频率等参数,形成四维向量参数矩阵;而后利用提取参数,按照信号到达时间对多网台进行分选;最后,通过实测数据验证该算法的有效性。
Aiming at the problem of that the old equipment can't use the current algorithm to complete the signal sorting of frequency hopping,an engineering method based on spectrogram is proposed.Firstly,according to the difference between frequency hopping signal and noise,a 2 D CFAR method is used to reduce noise of the spectrogram,which also can restore the split signal.Secondly,parameters extracted from the spectrum form a 4 D vector.Then,the multi-network stations are sorted according to the signal arrival time by extracting parameters.Finally,the validity of the proposed method is verified by measured data.
作者
陈梁栋
李梦瑶
CHEN Liangdong;LI Mengyao(Unit 95438 of PLA,Pengshan 620860,Sichuan,China)
出处
《电子信息对抗技术》
北大核心
2022年第4期31-35,共5页
Electronic Information Warfare Technology
关键词
谱图信息
跳频信号
信号分选
spectrogram information
frequency hopping
signal sorting
