Suppression of Range Ambiguity in Spaceborne SAR with Elevation Beam Pattern Mask Design

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In this letter, we present a method to design an elevation beam pattern mask for spaceborne synthetic aperture radar (SAR) to reduce the range ambiguity. The proposed two-way elevation beam pattern mask, which requires relatively low sidelobe levels only in the direction of strong range ambiguous echoes, can be highly suitable for enhancing the range ambiguity to signal ratio (RASR). The power levels of the different ambiguous echoes are estimated based on the backscattering coefficient model and satellite geometry. To meet the two-way beam pattern mask, both transmit and receive beam patterns are synthesized simultaneously through the minimax algorithm. To confirm the effectiveness of this mask design method, the RASR performance is evaluated by using various swaths.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2021-01
Language
English
Article Type
Article
Citation

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, v.19

ISSN
1545-598X
DOI
10.1109/LGRS.2020.3048426
URI
http://hdl.handle.net/10203/291725
Appears in Collection
EE-Journal Papers(저널논문)
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