Method of chirp-subpulse stepped frequency signal range profile based wavelet transform at low altitude

Author

Hanmei, Zhu ; Wanjie, Song ; Linrang, Zhang

Author_Institution

Nat. Key Lab. of Radar Signal Process., Xidian Univ., Xi´´an, China

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

916

Lastpage

620

Abstract

Feasibility of chirp-subpulse stepped frequency signal to implement high range resolution at low altitude is educed through analysis of its amplitude and frequency spectrum in this paper. Method of chirp-subpulse stepped frequency signal range profile based wavelet transform with nicer locality and approximation on time-frequency domain is brought forward. Compared with traditional IDFT, range resolution capability is improved further on multi-path problem by using this method, and thus makes locating and tracking for targets at low altitude penetration more feasible.

Keywords

radar signal processing; target tracking; time-frequency analysis; wavelet transforms; amplitude spectrum; chirp-subpulse stepped frequency signal range profile; frequency spectrum; high range resolution; multipath problem; range resolution capability; target location; target tracking; time-frequency domain; wavelet transform; Bandwidth; Chirp; Energy resolution; Frequency estimation; Radar tracking; Signal analysis; Signal processing; Signal resolution; Target tracking; Wavelet transforms; Wavelet Transform; chirp-subpulse stepped frequency signal; high range resolution at low altitude; multi-path problem;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2009. APSAR 2009. 2nd Asian-Pacific Conference on

Conference_Location

Xian, Shanxi

Print_ISBN

978-1-4244-2731-4

Electronic_ISBN

978-1-4244-2732-1

Type

conf

DOI

10.1109/APSAR.2009.5374315

Filename

5374315