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Amplitude space–time adaptive processing for ground-moving target indication laser radar

Amplitude space–time adaptive processing for ground-moving target indication laser radar

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For a ground-moving target indication (GMTI) radar, the minimum detectable velocity (MDV) is typically determined by the width of the Doppler response of the illuminated ground clutter. Given an array of receiving antennas, space–time adaptive processing (STAP) exploits spatial diversity to coherently cancel clutter returns and significantly improve the MDV. In ladar applications, an array of photo-detectors is frequently required to cover the desired field-of-view. For GMTI laser radar, the spatial diversity provided by this detector array may be exploited for clutter rejection. An algorithm for amplitude STAP processing of GMTI laser radar data is developed.

Inspec keywords: diversity reception; radar clutter; Doppler radar; interference suppression; radar detection; photodetectors; optical radar; space-time adaptive processing

Other keywords: ground-moving target indication radar; Doppler response; ladar application; photo-detector array; GMTI; minimum detectable velocity; ground clutter; MDV; receiving antenna; STAP; antenna array; spatial diversity; space-time adaptive processing; clutter cancellation

Subjects: Radar theory; Photodetectors; Electromagnetic compatibility and interference; Signal processing and detection; Optical radar

References

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      • Karr, T.J.: `Synthetic aperture ladar resolution through turbulence', Proc. SPIE, 2003, 4976, p. 22–33.
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      • S. Marcus , B.D. Colella , T.J. Green . Solid-state laser synthetic aperture radar. Appl. Opt. , 960 - 964
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      • Ward, J.: `Space-time adaptive processing for airborn radar', 1015, Technical, 1994.
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      • C.W. Chen , S. Hensley . Amplitude-based height reconstruction techniques for synthetic aperture ladar systems. J. Opt. Soc. Am. A , 529 - 538
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