Title :
Super-resolution algorithm for instantaneous ISAR imaging
Author :
Changyin, Sun ; Zhang, Boming
Author_Institution :
Key Lab. for Radar Signal Process., Xidian Univ., Xi´´an, China
fDate :
2/3/2000 12:00:00 AM
Abstract :
The super resolution method is investigated for use in instantaneous inverse synthetic aperture radar (ISAR) imaging. The time-varying Doppler spectrum is modelled as that of superimposed LFM chirp signals in a short time interval. A parametric relaxation-based algorithm is proposed for estimating the parameters of the signal. The effectiveness of the algorithm is verified by applying it to ISAR imaging
Keywords :
Doppler effect; image resolution; military radar; parameter estimation; radar imaging; spectral analysis; synthetic aperture radar; instantaneous ISAR imaging; inverse SAR imaging; parametric relaxation-based algorithm; signal parameters estimation; super-resolution algorithm; superimposed LFM chirp signals; synthetic aperture radar imaging; time-varying Doppler spectrum modelling;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000213
