A Subspace Projection Method for Forward-looking Imaging

Yang, Kaixin; Chen, Jin; Lin, Hongbo; Zhao, Siwei

doi:10.1109/iccece51280.2021.9342417

Cited by 1 publication

(3 citation statements)

References 5 publications

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“…We express the echo signal as a traditional multiframe SF signal transmission form, where the phase term of the echo pulse should be shown as Equation (11).…”

Section: Wave Positionmentioning

confidence: 99%

“…However, imaging techniques, such as Doppler beam sharpening and squint synthetic aperture applied to Synthetic Aperture Radar imaging, also have a blind zone in front-view imaging due to the non-orthogonal characteristics of the equidistance line and the equivalent Doppler line in the forward-looking imaging area [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…When single‐pulse imaging technology is applied to a scene with multiple strong scattering targets or continuously distributed targets, false targets are often produced with angular flicker, reducing the imaging quality [6–8]. However, imaging techniques, such as Doppler beam sharpening and squint synthetic aperture applied to Synthetic Aperture Radar imaging, also have a blind zone in front‐view imaging due to the non‐orthogonal characteristics of the equidistance line and the equivalent Doppler line in the forward‐looking imaging area [9–11].…”

Section: Introductionmentioning

confidence: 99%

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Research on a forward‐looking scanning imaging algorithm for a high‐speed radar platform

Liu

Pan

2023

IET Signal Processing

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The range and azimuth information of a target can be obtained after coherent pulse accumulation of the traditional multiframe stepped‐frequency (SF) synthesis wideband echo and spectrum analysis, and high‐resolution two‐dimensional imaging of the target can be achieved. However, the accumulation of a certain number of pulses requires a long beam dwell time, which cannot meet real‐time imaging requirements for high‐speed radar moving platforms. To solve the above problems, a scanning imaging mode is proposed by combining forward‐looking imaging and scanning imaging, and a target echo signal model with the structure of scanning stepped‐frequency is constructed. The SF pulses are grouped and transmitted according to the scanning order, and the echo pulses are sorted and reorganised. After the timing compensation and range Doppler coupling compensation are completed, the target is located and projected. The proposed imaging mode can achieve high‐resolution scanning forward‐looking imaging and can basically attain an azimuth resolution of approximately 0.1° within the forward‐looking scanning range. This imaging mode has higher real‐time performance and a larger target imaging range than the traditional methods. Moreover, the simulation results showed good performance via the scanning imaging method.

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“…We express the echo signal as a traditional multiframe SF signal transmission form, where the phase term of the echo pulse should be shown as Equation (11).…”

Section: Wave Positionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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