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Noise amplitude modulation jamming signal suppression based on weighted-matching pursuit

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2 Author(s)
Minhong, Sun ; School of Telecommunication Engineering, Hangzhou Dianzi Univ., Hangzhou 310037, P. R. China ; Bin, Tang

To suppress noise amplitude modulation jamming in a single-antenna radar system, a new method based on weighted-matching pursuit (WMP) algorithm is proposed, which can achieve underdetermined blind sources separation of the jamming and the target echo from the jammed mixture in the single channel of the receiver. Firstly, the presented method utilizes a prior information about the differences between the jamming component and the radar transmitted signal to construct two signal-adapted sub-dictionaries and to determine the weights. Then the WMP algorithm is applied to remove the jamming component from the mixture. Experimental results verify the validity of the presented method. By comparison of the pulse compression performance, the simulation results shows that the presented method is superior to the method of frequency domain cancellation (FDC) when the jamming-to-signal ratio (JSR) is lower than 15 dB.

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Systems Engineering and Electronics, Journal of  (Volume:20 ,  Issue: 5 )