ISAR echoes coherent processing and imaging using PSO-based adaptive joint time-frequency method

Author

Zhuang, Long ; Lei, Wanming

Author_Institution

Nanjing Res. Inst. of Electron. Technol., NRIET, Nanjing, China

fYear

2011

fDate

26-30 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

In most cases, the ISAR raw data is usually not coherent because it is difficult to tracking the target center precisely. The non-coherent echoes would make the reconstruction of focused ISAR images difficult. In this paper, a Particle Swarm Optimization (PSO) based adaptive joint time-frequency (AJTF) method is proposed for ISAR echoes coherent processing and imaging. The method can estimate the compensated phase precisely without heavy computational burden. Simulated and measured real data show that the method can significantly improve the distorted ISAR image and be suitable for real-time imaging.

Keywords

image reconstruction; particle swarm optimisation; radar imaging; synthetic aperture radar; time-frequency analysis; ISAR echoes coherent processing; adaptive joint time-frequency method; image reconstruction; noncoherent echoes; particle swarm optimization; radar imaging; real-time imaging; Doppler effect; Imaging; Joints; Radar imaging; Spectral analysis; Time frequency analysis; AJTF; ISAR; PSO;

fLanguage

English

Publisher

ieee

Conference_Titel

Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on

Conference_Location

Seoul

Print_ISBN

978-1-4577-1351-4

Type

conf

Filename

6087080