A New Subaperture Nonlinear Chirp Scaling Algorithm for Real-Time UWB-SAR Imaging

Author

Wang, Jian ; Xue, Guoyi ; Zhou, Zhimin ; Song, Qian

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha

fYear

2006

fDate

16-19 Oct. 2006

Firstpage

1

Lastpage

4

Abstract

This paper presents a new approach for high-resolution airborne SAR real-time imaging, which uses a subaperture nonlinear chirp scaling algorithm (NCSA) to accommodate the correction of the motion errors along track and cross track. The proposed algorithm is computationally efficient and can reduce the memory requirement by half with a great shorten of lag time before block processing. Simulation and real UWB-SAR data image formation show the validity of the proposed subaperture NCSA

Keywords

airborne radar; error correction; image motion analysis; image resolution; nonlinear systems; radar imaging; radar resolution; radar tracking; real-time systems; synthetic aperture radar; ultra wideband radar; NCSA; cross tracking; high-resolution airborne radar; motion error correction; nonlinear chirp scaling algorithm; real-time UWB-SAR imaging; ultra wide band synthetic aperture radar; Azimuth; Chirp; Computational modeling; Error correction; High-resolution imaging; Image coding; Image resolution; Motion estimation; Phase estimation; Radar tracking; Nonlinear Chirp Scaling; UWB-SAR; real-time;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2006. CIE '06. International Conference on

Conference_Location

Shanghai

Print_ISBN

0-7803-9582-4

Electronic_ISBN

0-7803-9583-2

Type

conf

DOI

10.1109/ICR.2006.343125

Filename

4148250