Back-projection imaging algorithm of random noise frequency modulation continuous wave SAR

Xingjian Xu, Yuehua Li and Can Wang

International Journal of Industrial and Systems Engineering, 2020, vol. 34, issue 2, 193-202

Abstract: The combination of random noise frequency-modulation continuous wave technology and synthetic aperture radar (SAR) promises a cost-effective, low probability of intercept and high electromagnetic compatibility. This paper analyses the time-domain restricting algorithms for random noise frequency modulation continuous wave (RNFMCW) SAR. Two versions of the back-projection algorithm are proposed. At first, the radar antenna continuous motion in a pulse repetition period of RNFMCW SAR is analysed. Then the phase term which is caused by the continuous motion is described by a approximate expression with Taylor expansion. Meanwhile, both the start-stop approximate back-projection algorithm and the modified back-projection algorithm are proposed. In the end, with the help of numerical simulation, the limitations of the start-stop approximation back-projection algorithm and the validity of the modified back-projection algorithms are illustrated.

Keywords: random noise; FMCW; synthetic aperture radar; SAR; Taylor expansion; back-projection; correlation. (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:ids:ijisen:v:34:y:2020:i:2:p:193-202

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