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An Equivalent Range Model Based on Time Resampling for High- Speed Maneuvering Platform SAR

Abstract— For the high-speed maneuvering platform SAR, the high-speed state will lead to stop-go assumption invalid and the forward acceleration would severely reduce the depth of focusing field in azimuth, thus the traditional range model with stop-go assumption will be ineffective. In this paper, the accurate range history is derived in a geometric configuration for high-speed maneuvering platform SAR and a new range equation is derived by transformation of bistatic to monostatic survey. Based on the new range equation, the azimuth time resampling is proposed by which one can obtain a simplified range equation with a form similar to that of the conventional SAR case. Then the typical imaging methods can be applied directly without any modification. Simulation results verify the effectiveness of the proposed method.

Index Terms— high-speed maneuvering platform, azimuth time resampling, range equation, synthetic aperture radar (SAR)

Anyi Wang, Xiaoyang Jiao, Ping Guo
College of Communication and Information Engineering, Xi'an University of Science and Technology, CHINA
Chunhui Lin
National Laboratory of Radar Signal Processing, Xidian University, CHINA

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Cite: Anyi Wang, Xiaoyang Jiao, Ping Guo, Chunhui Lin, "An Equivalent Range Model Based on Time Resampling for High- Speed Maneuvering Platform SAR," Proceedings of 2019 the 9th International Workshop on Computer Science and Engineering, pp. 462-467, Hong Kong, 15-17 June, 2019.