Frequency hopping signal detection based on wavelet decomposition and Hilbert-Huang transform

被引：8
|
作者：
Zheng, Yang [1 ]
Chen, Xihao [1 ]
Zhu, Rui [1 ]
机构：
[1] Air Force Engn Univ, Informat & Nav Inst, 1 Feng Hao Rd, Xian, Shaanxi, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2017年 / 31卷 / 19-21期
关键词：
Frequency hopping; signal detection; wavelet decomposition; Hilbert-Huang transform;
D O I：
10.1142/S0217984917400784
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Frequency hopping (FH) signal is widely adopted by military communications as a kind of low probability interception signal. Therefore, it is very important to research the FH signal detection algorithm. The existing detection algorithm of FH signals based on the time-frequency analysis cannot satisfy the time and frequency resolution requirement at the same time due to the influence of window function. In order to solve this problem, an algorithm based on wavelet decomposition and Hilbert-Huang transform (HHT) was proposed. The proposed algorithm removes the noise of the received signals by wavelet decomposition and detects the FH signals by Hilbert-Huang transform. Simulation results show the proposed algorithm takes into account both the time resolution and the frequency resolution. Correspondingly, the accuracy of FH signals detection can be improved.
引用
收藏
页数：6
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