Title :
A refined range doppler algorithm for airborne squinted SAR imaging under maneuvers
Author :
Yue-li, Li ; Dian-nong, Liang
Author_Institution :
NUDT, Changsha
Abstract :
Based on the equivalent squint range model which combines velocities and constant accelerations, a new approach is provided for airborne SAR data processing under maneuvers. The equivalent Doppler parameters varying with platform movement are analyzed, which offered the availability of direct motion compensation of accelerations in image formation. A sub-aperture range Doppler algorithm is proposed to improve image resolutions for airborne squint SAR on platform with constant accelerations. Simulations of point target are implemented to demonstrate the validity of this approach with integrated motion compensation (MOCO) of constant accelerations.
Keywords :
Doppler radar; aerospace instrumentation; image resolution; motion compensation; radar imaging; radar resolution; synthetic aperture radar; airborne squinted SAR imaging; constant accelerations; direct motion compensation; image formation; image resolutions; maneuvers; refined range Doppler algorithm; sub-aperture range Doppler algorithm; Acceleration; Apertures; Data processing; Geometry; Image analysis; Image motion analysis; Image quality; Motion compensation; Radar polarimetry; Solid modeling; SAR imaging; constant acceleration movement; refined range Doppler algorithm; squint range equivalent model;
Conference_Titel :
Synthetic Aperture Radar, 2007. APSAR 2007. 1st Asian and Pacific Conference on
Conference_Location :
Huangshan
Print_ISBN :
978-1-4244-1188-7
Electronic_ISBN :
978-1-4244-1188-7
DOI :
10.1109/APSAR.2007.4418633
