A Nonlinear Refined Extended Chirp Scaling Algorithm for Spaceborne ScanSAR

Author

Jie, Wei ; Houjin, Chen ; Xiaofeng, Zhong

Author_Institution

Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing

Volume

4

fYear

2008

fDate

7-11 July 2008

Abstract

In this paper, a new nonlinear Refined Extended Chirp Scaling (RECS) imaging algorithm is proposed for spaceborne ScanSAR with large cell migration to resolve the effects of residual cubic phase error in the deducing of the traditional RECS algorithm. The algorithm achieves cubic phase error correction of RECS by nonlinear filter to improve the spaceborne ScanSAR image qualities. The full derivation and the realizing approach of the algorithm are presented. And the algorithm is verified with simulations.

Keywords

geophysical techniques; remote sensing by radar; spaceborne radar; synthetic aperture radar; ECS method; Extended Chirp Scaling; RECS imaging algorithm; airborne range broadside model; nonlinear Refined Extended Chirp Scaling algorithm; residual cubic phase error; spaceborne ScanSAR; squint range model; synthetic aperture radar; Azimuth; Chirp; Error correction; Image quality; Image resolution; Pulse width modulation; Radar antennas; Solid modeling; Spaceborne radar; Synthetic aperture radar; RECS; Spaceborne ScanSAR; nonlinear compensation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International

Conference_Location

Boston, MA

Print_ISBN

978-1-4244-2807-6

Electronic_ISBN

978-1-4244-2808-3

Type

conf

DOI

10.1109/IGARSS.2008.4779961

Filename

4779961