23 November 2015 Geosynchronous synthetic aperture radar data focusing based on extended keystone transform
Author Affiliations +
J. of Applied Remote Sensing, 9(1), 095042 (2015). doi:10.1117/1.JRS.9.095042
In geosynchronous (GEO) synthetic aperture radar (SAR), the synthetic aperture time increases to hundreds of seconds and the signal propagation delay time reaches up to hundreds of milliseconds, resulting in the violation of the stop-and-go assumption and the linear trajectory model. The accurate slant range history is created based on the consideration of the stop-and-go error. Then, an extended keystone transform is proposed to correct the more complicated range cell migration, and a two-dimensional nonuniform Fourier transform is presented to achieve a well-focused image. The simulation results verify the correctness and effectiveness of the proposed processing method in GEO SAR.
© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
Bin Hu, Yicheng Jiang, Yun Zhang, Tat-Soon Yeo, "Geosynchronous synthetic aperture radar data focusing based on extended keystone transform," Journal of Applied Remote Sensing 9(1), 095042 (23 November 2015). https://doi.org/10.1117/1.JRS.9.095042

Synthetic aperture radar

Doppler effect

Fourier transforms


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