摘要: High-frequency(HF) skywave over-the-horizonradar(OTHR) looks down its targets from the ionosphere, ithas a large operating range and a large cover areas, but itreceived a large-amplitude backscatterer echo form theterrain and sea... 展开 High-frequency(HF) skywave over-the-horizonradar(OTHR) looks down its targets from the ionosphere, ithas a large operating range and a large cover areas, but itreceived a large-amplitude backscatterer echo form theterrain and sea, and strong interference, such as, radiofrequency interference, industrial interference, impulsivenoise, lightning impulsive, meteor trail echoes and so on.Interference can be divided into long time interference andtransient interference, transient interference lasts a shorttime, but its intensity is great. This paper first discusses thecharacter of transient interference, and uses eigen-decomposition to separate the sea clutter subspace andfilter it, or filters terrestrial clutter in frequency domain andback to time domain, then the transient interference isdetected, after that the transient interference are excisedfrom the original echoes, finally, the excised clutter andtarget echoes are predicted by Burg linear predictionalgorithm. This processing method has been successfullyapplied to the real data from China experimental OTHR. 收起