Synthetic aperture radar processing with polar formatted subapertures

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Synthetic Aperture Radar (SAR) uses the motion of a small real antenna to synthesize a larger aperture, and thereby achieve very fine azimuth resolution. Efficient SAR image formation requires modelling the radar echo and compensating (focusing) the delay and phase for various positions in the target scene. Polar-Format processing is one successful algorithm developed to process large scenes at fine resolutions, but is still limited, especially at resolutions near a wavelength. This paper shows how using tiers of subapertures can overcome the limitations of Polar-Format processing and increase the focused scene size substantially while using only efficient vector multiplies and ... continued below

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6 p.

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Doerry, A. W. October 1, 1994.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Synthetic Aperture Radar (SAR) uses the motion of a small real antenna to synthesize a larger aperture, and thereby achieve very fine azimuth resolution. Efficient SAR image formation requires modelling the radar echo and compensating (focusing) the delay and phase for various positions in the target scene. Polar-Format processing is one successful algorithm developed to process large scenes at fine resolutions, but is still limited, especially at resolutions near a wavelength. This paper shows how using tiers of subapertures can overcome the limitations of Polar-Format processing and increase the focused scene size substantially while using only efficient vector multiplies and Fast Fourier Transforms.

Physical Description

6 p.

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OSTI; NTIS; GPO Dep.

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  • 28. annual Asilomar conference on signals, systems, and computers,Pacific Grove, CA (United States),31 Oct - 2 Nov 1994

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  • Other: DE95001830
  • Report No.: SAND--94-1375C
  • Report No.: CONF-9410156--2
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/10161315 | External Link
  • Office of Scientific & Technical Information Report Number: 10190734
  • Archival Resource Key: ark:/67531/metadc1395249

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  • October 1, 1994

Added to The UNT Digital Library

  • Jan. 12, 2019, 4:41 p.m.

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  • Jan. 23, 2019, 1:34 p.m.

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Doerry, A. W. Synthetic aperture radar processing with polar formatted subapertures, article, October 1, 1994; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1395249/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.