Title :
Radon transform and the modified envelope correlation method for ISAR imaging of multi-target
Author :
Kong, LingKun ; Zhang, Wei ; Zhang, Shunsheng ; Zhou, BaoLiang
Author_Institution :
Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In multi-target ISAR imaging, if the returned signals are range non-separable and the relative radial velocity is large. We can neither resolve them in range domain nor the Doppler frequency domain. In order to solve this problem, the use of the Radon transform and a modified envelope correlation method for multi-target ISAR imaging is presented. The radon transform is used to align the range profiles coarsely. For more accuracy alignment, a modified envelope correlation method is proposed. After range alignment, phase compensation is fulfilled by Discrete chirp-Fourier transform (DCFT). The simulation results show that the method proposed in this paper is effective.
Keywords :
Doppler radar; Radon transforms; correlation methods; discrete Fourier transforms; radar imaging; synthetic aperture radar; Doppler frequency domain; Radon transform; discrete chirp-Fourier transform; modified envelope correlation method; multitarget ISAR imaging; phase compensation; range alignment; range domain; relative radial velocity; Chirp modulation; Correlation; Discrete transforms; Frequency domain analysis; Image coding; Image recognition; Inverse synthetic aperture radar; Signal resolution; Spaceborne radar; Target recognition;
Conference_Titel :
Radar Conference, 2010 IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-5811-0
DOI :
10.1109/RADAR.2010.5494543
