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

Si Chen; Shuning Zhang; Huichang Zhao; Xingang Zhou; Yong Chen

doi:10.1117/1.JRS.8.083505

18 December 2014 Improved nonlinear chirp scaling algorithm for dechirped missile-borne synthetic aperture radar

Si Chen, Shuning Zhang, Huichang Zhao, Xingang Zhou, Yong Chen

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 8, Issue 1, 083505 (December 2014). https://doi.org/10.1117/1.JRS.8.083505

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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Si Chen, Shuning Zhang, Huichang Zhao, Xingang Zhou, and Yong Chen "Improved nonlinear chirp scaling algorithm for dechirped missile-borne synthetic aperture radar," Journal of Applied Remote Sensing 8(1), 083505 (18 December 2014). https://doi.org/10.1117/1.JRS.8.083505

Published: 18 December 2014

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