Title :
Method to suppress radio-frequency interference in HF radars
Author :
Jun, Y. ; Biyang, W. ; Shicai, W.
Author_Institution :
Electron. Inf. Dept., Wuhan Univ., China
Abstract :
The output of radio-frequency interference (RFI) after mixture with the local oscillator (LO) and lowpass filter is analysed, and some conclusions are drawn. Based on the conclusions, a new method is presented to suppress the RFI. The method performed well on ocean echo data acquired with the HF system OSMAR2000, and the detection distance has been increased by 25 km.
Keywords :
HF radio propagation; echo suppression; low-pass filters; marine radar; radar interference; HF radars; OSMAR2000 HF system; RFI; detection distance; local oscillator; lowpass filter; ocean echo data; radio-frequency interference suppression;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040085
