摘要
针对2FSK信号识别提出了一种基于信号瞬时特征提取的识别方法。对2FSK信号进行正交化,得出其同相分量和正交分量,并据此计算信号瞬时特征和相关的识别特征,以根据特征识别出2FSK信号。通过对识别出的信号进行参数估计,以估计信号的调制参数和符号速率来验证识别的结果。对实际信号进行试验结果表明,该方法准确性强、计算效率高。
2FSK signal recognition is a common problem in signal recognition and processing. This paper pres- ents a method for the identification of 2FSK signals based on instantaneous features extraction. The instantaneous fea- tures and related features of the in-phase and quadrature components after orthogonal are calculated. If the signal is 2FSK according to the features, the modulation parameters and symbol rate are estimated to verify the results of the i- dentification. The test results of the actual signals show that this method is accurate and efficient.
出处
《电子科技》
2017年第2期4-7,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(61401511)
关键词
信号识别
瞬时特征
参数估计
signal identification
instantaneous features
parameter estimation
