兵工自动化Issue(8)：68-70,80,4.DOI:10.7690/bgzdh.2013.08.019
基于Hilbert-Huang变换的雷达发射机故障特征提取
Fault Feature Extraction for Radar Transmitter Based on Hilbert-Huang Transform
王刘军 1刘昌锦2
作者信息
- 1. 陆军军官学院研究生管理大队，合肥 230031
- 2. 陆军军官学院防空兵系，合肥 230031
- 折叠
摘要
Abstract
A method of fault feature extraction for radar transmitter based on Hilbert-Huang Transform (HHT) is put forward for improving the accuracy of fault feature extraction in nonlinear and non-stationary radar transmitter fault signal. Introduce the concepts of instantaneous frequency (IF) and intrinsic mode function (IMF), and provide the specific process of empirical mode decomposition (EMD) and ensemble empirical mode decomposition (EEMD) as an improvement method. Simulate the input rectifier and filter circuit of switching power supply in radar transmitter. Get a number of IMFs from fault voltage signal by EEMD, and the IF from one of the IMFs by Hilbert transform. The calculation result proved that, the IF has definite physical meaning based on the HHT, and HHT can detect fault information and extract fault feature for radar transmitter fully and reliably.关键词
Hilbert-Huang变换/雷达发射机/故障特征提取/集合经验模态分解Key words
Hilbert-Huang transform/radar transmitter/fault feature extraction/ensemble empirical mode decomposition分类
军事科技引用本文复制引用
王刘军,刘昌锦..基于Hilbert-Huang变换的雷达发射机故障特征提取[J].兵工自动化,2013,(8):68-70,80,4.
