Name
Abstract | ||
|---|---|---|
Sky wave over-the-horizon radar is easily affected by radio frequency interference (RFI) since it shares the high-frequency band with many radio services. Among the existing methods, spatial filtering method is ineffective to suppress the mainlobe RFI, and time-frequency method usually weakens the target signal while rejecting RFI. In this paper, we notice that, before matched filtering, RFI is usually a narrowband signal but the target echo is a broadband signal. According to this feature, an efficient RFI suppression algorithm is proposed by designing a new matched waveform based on a constrained optimization problem. Further, we show that this problem can be reformulated in a convex form as the second-order cone program and solved efficiently using the well-established interior point method. Compared with the existing methods, the proposed algorithm can suppress the RFI from any direction of arrival and get a higher output signal-to-interference-plus-noise ratio. Experimental results demonstrate that the proposed algorithm outperforms the existing methods. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1007/s00034-016-0422-4 | CSSP |
Keywords | Field | DocType |
Sky wave over-the-horizon radar, Radio frequency interference suppression, Matched filtering, Second-order cone programming | Second-order cone programming,Radar,Narrowband,Direction of arrival,Waveform,Electromagnetic interference,Filter (signal processing),Algorithm,Electronic engineering,Line filter,Mathematics | Journal |
Volume | Issue | ISSN |
36 | 6 | 1531-5878 |
Citations | PageRank | References |
0 | 0.34 | 10 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jinfeng Hu | 1 | 0 | 1.01 |
| Hanwen Chen | 2 | 0 | 0.34 |
| Zhirong Lin | 3 | 0 | 4.06 |
| Huiyong Li | 4 | 5 | 6.15 |
| Julan Xie | 5 | 29 | 7.66 |