Research Papers

Improved nonlinear chirp scaling algorithm for dechirped missile-borne synthetic aperture radar

[+] Author Affiliations
Si Chen

Nanjing University of Science and Technology, School of Electronic and Optical Engineering, Faculty of Detection and Control, Xiao Lin Wei Street, Nanjing 210094, China

Shuning Zhang

Nanjing University of Science and Technology, School of Electronic and Optical Engineering, Faculty of Detection and Control, Xiao Lin Wei Street, Nanjing 210094, China

Huichang Zhao

Nanjing University of Science and Technology, School of Electronic and Optical Engineering, Faculty of Detection and Control, Xiao Lin Wei Street, Nanjing 210094, China

Xingang Zhou

Nanjing University of Science and Technology, School of Electronic and Optical Engineering, Faculty of Detection and Control, Xiao Lin Wei Street, Nanjing 210094, China

Communication Network Technology Management Center of Nanjing Integrated Military Region, Huang Pu Street, Nanjing 210016, China

Yong Chen

Nanjing University of Science and Technology, School of Electronic and Optical Engineering, Faculty of Detection and Control, Xiao Lin Wei Street, Nanjing 210094, China

J. Appl. Remote Sens. 8(1), 083505 (Dec 18, 2014). doi:10.1117/1.JRS.8.083505
History: Received August 24, 2014; Accepted November 13, 2014
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Abstract.  An improved nonlinear chirp scaling (NLCS) algorithm for dechirped missile-borne synthetic aperture radar was proposed. The key step is to use an improved NLCS operation to equalize azimuth frequency modulation rate after linear range walk correction, secondary range compression, and range compression. By adopting a higher-order approximation, the image has better accuracy and less distortion. Validity of the algorithm is demonstrated using simulated and real datasets. Moreover, the whole procedure only consists of fast Fourier transform and complex multiplication, which means easier implementation and higher efficiency.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Si Chen ; Shuning Zhang ; Huichang Zhao ; Xingang Zhou and Yong Chen
"Improved nonlinear chirp scaling algorithm for dechirped missile-borne synthetic aperture radar", J. Appl. Remote Sens. 8(1), 083505 (Dec 18, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.083505


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