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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 67, Iss. 8 — Aug. 1, 1977
  • pp: 1091–1098

An analysis of the frequency spectrum of laser light scattered from moving rough objects

J. Carl Leader  »View Author Affiliations

JOSA, Vol. 67, Issue 8, pp. 1091-1098 (1977)

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The frequency spectrum of laser light scattered from moving rough objects is examined by temporally Fourier transforming the mutual coherence function describing the scattering. The motion of the object is introduced through the temporal dependence of the spatial variables of the mutual coherence function. A simple Doppler shift model is shown to provide a first approximaion to the result derived via coherence theory, for fully illuminated objects. An expression for the frequency broadening caused by the limited observation interval of a given rough-surface area is derived, and the correspondence with previous results is noted.

© 1977 Optical Society of America

J. Carl Leader, "An analysis of the frequency spectrum of laser light scattered from moving rough objects," J. Opt. Soc. Am. 67, 1091-1098 (1977)

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  14. A more precise statement of the restrictions imposed on the antenna dimensions is provided by the two-dimensional "map" of maximum angular frequency variations W(fx max, fy max, Δ R, τ) ∼ d2 σj(2xp max/λ, 2λp max/λ; v¯)/dxpdyp.
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  17. A focused laser beam diameter of 50 µm was employed in the experiments described in Ref. 15. The experimental geometry resulted in a di value [Eq. (28)] of 0.5 mm. Thus in this case, the frequency broadening was primarily caused by the limited observation interval.
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