Title :
Adaptive cancellation in transmitted signal of repeating type jammer based on fractional delay filter
Author :
Sang, Naijian ; Wang, Xuegang ; Zhou, Yun
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In the work process of repeating type jammer, the transmitted signal always enters into the jammer´s receiver and make it work abnormally. An adaptive interference cancellation structure based on LMS algorithm is suggested to solve this problem. However considering the wideband interference signal, we improved the structure. The focus of this essay is to utilize variable fractional delay filter to make the reference signal and interference signal aligned, thus to improve the effect of wideband signal cancellation. In addition, the structure of the variable fractional delay filter is given. Finally, the effectiveness of the adaptive cancellation in wideband interference signal by using this structure is proved through simulation.
Keywords :
delay filters; jamming; least mean squares methods; radar signal processing; LMS algorithm; adaptive interference cancellation structure; interference signal; jammer receiver; radar interference; radar jamming; reference signal; repeating-type jammer; transmitted signal; variable-fractional delay filter; wideband interference signal; wideband signal cancellation; Adaptive filters; Clocks; Delay; Finite impulse response filter; Interference; Jamming; Wideband; LMS algorithm; adaptive cancellation; repeating type jammer; variable fractional delay filter;
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159737
