Title :
The detection of long chirp signal with small frequency rate in low SNR
Author :
Yu, Wei ; Ying, Liu
Author_Institution :
Dept. of Inf. Sci. & Eng., Wuhan Univ. of Sci. & Technol., Wuhan, China
Abstract :
The detection of a long linear frequency-modulated signal (LFM) with small frequency rate is studied in very low signal-noise ratio (SNR). By wigner-hough transform for each subsection of the signal, the LFM signal can collect a peak in each WHT plane. Making use of the character that and the peak moves continuously in multi-frame WHT plane is same as the moving target of a image sequence, a new detection technique combined WHT with image Processing is proposed. The technique is proved out by computer simulation of keeping good performance for this signal.
Keywords :
chirp modulation; edge detection; image sequences; object detection; radar detection; radar imaging; transforms; LFM signal; LPI radar signal; image sequence; linear frequency-modulated signal; long chirp signal detection; signal-to-noise ratio; target detection; wignerhough transform; HT; Image Processing; LFM signal; Signal detection;
Conference_Titel :
Computational Intelligence and Natural Computing Proceedings (CINC), 2010 Second International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7705-0
DOI :
10.1109/CINC.2010.5643826
