Paper Info
Title
Airborne geographically referenced stripmap SAR data processing
Abstract
This paper analyzes an innovative geographically referenced (GR) stripmap mode for the airborne synthetic aperture radar (SAR). In the GR stripmap SAR, the antenna beam illuminates orthogonally with the ground strip, which is not parallel to the SAR trajectory. Benefiting from the GR stripmap mode, the effective observation swath can be enlarged comparing to what can be realized by the traditional stripmap SAR. A modified nonlinear chirp scaling (MNLCS) method is suggested for the GR stripmap SAR imaging. It can solve the problem caused by scatterers' non-uniform Doppler history that disables most traditional imaging algorithms for the GR stripmap SAR. The MNLCS algorithm consists of three main steps. First, a bulk range migration compensation procedure eliminates the linear range migration (range walk). Second, an azimuth perturbation filter unifies the Doppler frequency modulation rate for each range cell. Lastly, a modified chirp scaling processing finishes the data focusing. Performance of the MNLCS algorithm was analyzed, followed by a series of computer simulation results, which validated the MNLCS for the GR stripmap SAR imaging.
Year
DOI
Venue
2014
10.1109/IGARSS.2014.6946499
IGARSS
Keywords
Field
DocType
ground strip,effective observation swath,synthetic aperture radar,innovative gr stripmap mode,modified chirp scaling processing,scatterer nonuniform doppler history,synthetic aperture radar (sar),gr stripmap mode,mnlcs method,traditional stripmap sar,bulk range migration compensation procedure,airborne geographically referenced stripmap sar data processing,gr stripmap sar imaging,range cell,mnlcs algorithm performance,azimuth perturbation filter,doppler frequency modulation rate,data focusing,computer simulation result series,linear range migration,range walk,antenna beam illumination,modified nonlinear chirp scaling method,innovative geographically referenced stripmap mode,mnlcs algorithm,sar trajectory,airborne synthetic aperture radar,traditional imaging algorithm,gr stripmap sar,frequency modulation,chirp,doppler effect,strips,azimuth
Data processing,Nonlinear system,Computer science,Synthetic aperture radar,Remote sensing,Azimuth,Modulation,Doppler frequency,Doppler effect,Trajectory
Conference
ISSN
Citations 
PageRank 
2153-6996
0
0.34
References 
Authors
2
4
Name
Order
Citations
PageRank
Yan Wang116828.11
Jing-wen Li2154.83
Bing Sun322.43
Jie Chen42487353.65