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Applied Optics

Applied Optics


  • Vol. 18, Iss. 9 — May. 1, 1979
  • pp: 1390–1398

Antenna parameters for incoherent backscatter heterodyne lidar

B. J. Rye  »View Author Affiliations

Applied Optics, Vol. 18, Issue 9, pp. 1390-1398 (1979)

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The antenna and beam geometry of lidar systems employing heterodyne reception of incoherent backscatter signals are discussed. Particular emphasis is placed on systems where the target extends uniformly across the transmitted beam using topographic targets or atmospheric backscatter. The geometry is assumed to be circularly symmetrical, but otherwise arbitrary obscurations are permitted. The effects of atmospheric scintillation are neglected. Parameters are defined which characterize the system efficiency, and the conditions under which these parameters may be maximized are considered.

© 1979 Optical Society of America

Original Manuscript: May 23, 1978
Published: May 1, 1979

B. J. Rye, "Antenna parameters for incoherent backscatter heterodyne lidar," Appl. Opt. 18, 1390-1398 (1979)

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  1. This assumption is justified by the central limit theorem if there are many particles in the scattering volume and if the signal is sampled over times long compared with its coherence time. Relevant discussions in the cases where one of these assumption is not valid are given, respectively, by E. Jakeman, P. N. Pusey, Phys. Rev. Lett. 40, 546 (1978) and by L. Mandel, Phys. Rev. 181, 75 (1969). [CrossRef]
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  15. All integrals in this paper are between extreme limits, i.e., −∞ and ∞, or 0 and ∞ as appropriate, except for the double intergrals which have been characterized by the area of integration and where otherwise specified.
  16. B. J. Rye, “Basic Principles of Signal Acquisition in DAS Systems Employing Incoherent Backscatter,” Hull University, Department of Applied Physics, Internal Report (January1978).
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  19. See e.g., R. Bracewell, The Fourier Transform and its Applications (McGraw-Hill, New York, 1965).
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