Open AccessComparison of two‐step and one‐step motion compensation algorithms for airborne synthetic aperture radar
Author(s) -
Yang Mingdong,
Zhu Daiyin,
Song Wei
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.1350
Subject(s) - synthetic aperture radar , motion compensation , computer science , algorithm , compensation (psychology) , inverse synthetic aperture radar , radar , radar imaging , computer vision , artificial intelligence , telecommunications , psychology , psychoanalysis
Airborne synthetic aperture radar (SAR) image quality considerably degrades because of motion errors. High‐precision motion compensation (MOCO) is necessary in an advanced SAR data processing scheme. In the case of ultra‐high resolution, the conventional two‐step MOCO algorithm introduces significant range cell migration correction (RCMC) error which causes a loss to resolution. Another method named one‐step MOCO can avoid RCMC error, improving image quality obviously. Meanwhile, one‐step MOCO can well integrate with the standard Omega‐K algorithm succinctly. A comparison of the two MOCO algorithms is demonstrated by analysing the RCMC error. Point targets simulation has validated the proposed research.