Title :
Adaptive suppression method of radar jamming in joint time frequency domain
Author :
Jinli Meng ; Youguang Fu ; Yi Chen ; Ning Wang ; Yujie Zhang
Author_Institution :
Dept. of Pre-Res., Nanjing Res. Inst. of Electron. Technol., Nanjing, China
Abstract :
A novel radar adaptive jamming suppression method based on joint time-frequency transformation is proposed. Confronting the challenges of non-stationary jamming signals that radar receives, a new technique is presented to deal with them. Firstly, the time-frequency characteristics of radar received signal are analyzed by short-time Fourier transform (STFT). Secondly, an adaptive filter function is constructed in STFT domain. By applying a proper threshold to the time-frequency modulus spectrum (TFMS), strong jamming signal can be adaptively eliminated, polluted signal can be shrunk slightly and the useful signals can be retained. Finally, simulations validate the efficiency of our new method.
Keywords :
Fourier transforms; adaptive filters; adaptive radar; interference suppression; jamming; radar signal processing; time-frequency analysis; STFT; TFMS; adaptive filter function; joint time frequency domain; nonstationary jamming signal; radar adaptive jamming suppression method; short-time Fourier transform; time-frequency modulus spectrum; Adaptive filters; Filtering algorithms; Fourier transforms; Jamming; Radar; Time-frequency analysis; adaptive filtering; radar jamming suppression; short-time Fourier transform; time-frequency analysis;
Conference_Titel :
Information Technology and Electronic Commerce (ICITEC), 2014 2nd International Conference on
Print_ISBN :
978-1-4799-5298-4
DOI :
10.1109/ICITEC.2014.7105604
