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Article

Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm

School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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Sensors 2019, 19(17), 3792; https://doi.org/10.3390/s19173792
Received: 15 July 2019 / Revised: 26 August 2019 / Accepted: 30 August 2019 / Published: 1 September 2019
(This article belongs to the Special Issue Recent Advancements in Radar Imaging and Sensing Technology)
For parallel bistatic forward-looking synthetic aperture radar (SAR) imaging, the instantaneous slant range is a double-square-root expression due to the separate transmitter-receiver system form. The hyperbolic approximation provides a feasible solution to convert the dual square-root expression into a single-square-root expression. However, some high-order terms of the range Taylor expansion have not been considered during the slant range approximation procedure in existing methods, and therefore, inaccurate phase compensation occurs. To obtain a more accurate compensation result, an improved hyperbolic approximation range form with high-order terms is proposed. Then, a modified omega-K algorithm based on the new slant range form is adopted for parallel bistatic forward-looking SAR imaging. Several simulation results validate the effectiveness of the proposed imaging algorithm. View Full-Text
Keywords: bistatic synthetic aperture radar (SAR); hyperbolic approximation; phase compensation; modified omega-K bistatic synthetic aperture radar (SAR); hyperbolic approximation; phase compensation; modified omega-K
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MDPI and ACS Style

Wang, C.; Su, W.; Gu, H.; Yang, J. Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm. Sensors 2019, 19, 3792. https://doi.org/10.3390/s19173792

AMA Style

Wang C, Su W, Gu H, Yang J. Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm. Sensors. 2019; 19(17):3792. https://doi.org/10.3390/s19173792

Chicago/Turabian Style

Wang, Chenchen, Weimin Su, Hong Gu, and Jianchao Yang. 2019. "Focusing Bistatic Forward-Looking Synthetic Aperture Radar Based on an Improved Hyperbolic Range Model and a Modified Omega-K Algorithm" Sensors 19, no. 17: 3792. https://doi.org/10.3390/s19173792

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