Simulations of Spotlight Synthetic Aperture Radar Super-resolution Algorithm

Bu, Lijing; Zhao, Shuang; Zhang, Guo; Song, Ruichao

doi:10.1007/s12524-021-01469-5

Cited by 1 publication

(1 citation statement)

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“…Earlier studies [18,19] did not consider the actual mission environment and instead used the slant range between the center of the SAL and the target as an arbitrary constant value to solve the unknown parameters in the SAR geometry. In other studies [11,20,21], when performing an SAR simulation, the slant range from the center of the SAL was assumed to be a constant value and that from the SAL's starting point, which is known in the current mission environment, was not considered. In this paper, we present a method for estimating the range and Doppler cone angle at the center of the SAL and the optimal SAT.…”

Section: Introductionmentioning

confidence: 99%

Analysis Method for Determining Optimal Synthetic Aperture Time Using Estimated Range and Doppler Cone Angle at the Center of Synthetic Aperture Length

Kim

Lim

Shin

2023

J. Electromagn. Eng. Sci

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Synthetic aperture time (SAT) is a crucial component for acquiring high-quality synthetic aperture radar images with an excellent target cross-range resolution. SAT is analyzed using the range and Doppler cone angle at the center of the synthetic aperture length (SAL). However, in a real flight mission setting, only the range and Doppler cone angle at the SAL’s starting point are determined. Therefore, we present a method for estimating the range and Doppler cone angle at the center of the SAL to calculate an accurate SAT that is suitable for the spatial resolution of the assigned mission. We performed an iterative analysis of SAT at the range and Doppler cone angle at the starting point of the SAL (original SAT) and at the center of the SAL (proposed SAT). Consequently, the proposed SAT decreased by 0.69%–16.14% compared to the original SAT at a resolution of 0.1–3.0 m.

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