ISAR based on micro-doppler analysis and Chirplet parameter separation

Author

Li Bin ; Wan Jian-wei ; Yao Kang-ze ; Wang Yan ; Ci Lin-lin ; Lu Jun

Author_Institution

Nat. Univ. of Defense Technol., Changsha

fYear

2007

fDate

5-9 Nov. 2007

Firstpage

379

Lastpage

384

Abstract

When target or its parts exist micro-motion, ISAR is severely contaminated by the micro-Doppler effect caused by the micro-motion. To solve the problem, the micro-motion models of translation, rotation and vibration are analyzed, and then the time-frequency distribution of these micro-motions are discussed. After echoes are decomposed with Chirplet transformation, an algorithm, which separates signals using micro Doppler and micro Doppler rate in Chirplet parameter domain, is investigated. The algorithm is verified by simulation data of point-scatterer and real data of an airliner, nice ISAR images are obtained.

Keywords

Doppler radar; radar cross-sections; radar imaging; radar interferometry; synthetic aperture radar; time-frequency analysis; ISAR; chirplet parameter separation; chirplet transformation; microDoppler analysis; micromotion model; radar echo; radar imaging; time-frequency distribution; Airplanes; Chirp modulation; Doppler radar; Information analysis; Motion analysis; Radar imaging; Radar tracking; Time frequency analysis; Vibrations; Wide area networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar, 2007. APSAR 2007. 1st Asian and Pacific Conference on

Conference_Location

Huangshan

Print_ISBN

978-1-4244-1188-7

Electronic_ISBN

978-1-4244-1188-7

Type

conf

DOI

10.1109/APSAR.2007.4418631

Filename

4418631