Radio Frequency Interference Suppression for HF Surface Wave Radar Using CEMD and Temporal Windowing Methods
| Autor: | Mohsen Eslami Nazari, Weimin Huang, Chen Zhao |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
Acoustics 0211 other engineering and technologies Mode (statistics) 02 engineering and technology Geotechnical Engineering and Engineering Geology Interference (wave propagation) Electromagnetic interference Hilbert–Huang transform law.invention Amplitude law Surface wave Time domain Electrical and Electronic Engineering Radar 021101 geological & geomatics engineering |
| Zdroj: | IEEE Geoscience and Remote Sensing Letters. 17:212-216 |
| ISSN: | 1558-0571 1545-598X |
| Popis: | A common source of interference in high-frequency (HF) surface wave (HFSW) radars is radio frequency interference (RFI). Its existence inhibits the detection performance of HFSW radars since its amplitude can mask the sea echoes. On the basis of the analysis of RFI characteristics, a new RFI mitigation algorithm based on inverse temporal windowing and complex empirical mode decomposition (CEMD) is proposed in this letter. In this method, echoes containing RFI are decomposed into a number of intrinsic mode functions (IMFs) via CEMD and then the inverse temporal windowing technique is applied to each IMFs in the time domain. Test results show that the proposed method outperforms the conventional method in simulated and practical conditions and can effectively mitigate RFI without losing sea echoes. |
| Databáze: | OpenAIRE |
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