Title :
A novel method for extraction of in-pulse feature of multi-component LFM signal
Author :
Chen, Changxiao ; He, Minghao ; Jin, Hongbin ; Li, Haihong ; Shen, Zhengyi
Author_Institution :
Air Force Radar Acad., Wuhan, China
Abstract :
Aiming on the problem of low precision and cross term in the conventional method of multi-component LFM signal detection and parameter estimation. A time-frequency associated analyzed method based on wavelet transform and time-frequency reassignment and Hough transform is propased. Overcome the interferences of cross term by wavelet transform, guarantee the accuracy by time-frequency reassignment, use the distribution of time-frequency after reassignment as the image, then achieves the interception of component and the estimate of parameter based on Hough transform. Simulation results show that this method is feasible.
Keywords :
FM radar; Hough transforms; feature extraction; military radar; parameter estimation; radar imaging; signal detection; time-frequency analysis; wavelet transforms; Hough transform; battlefield environment; in-pulse feature extraction; multicomponent linear frequency modulation signal detection; parameter estimation; radar; time-frequency associated analyzed method; time-frequency reassignment; wavelet transform; Chirp modulation; Feature extraction; Force measurement; Instruments; Interference; Parameter estimation; Signal analysis; Time frequency analysis; Wavelet analysis; Wavelet transforms; Hough transform; multi-component LFM signal; time-frequency reassignment; wavelet transform;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5274665
