Vol. 5, issue 08, article # 12

pdf Afanas'eva E. M., Pon'kin V. A. Joint estimation of the effect of the optical transfer function of the atmosphere and optical system on the characteristics of detection of extended objects. // Atmospheric and oceanic optics. 1992. V. 5. No. 08. P. 570-573.
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Abstract:

The joint effect of the optical transfer functions (OTF's) of the atmosphere and optical system on the characteristics of detection of the extended objects is numerically estimated on the basis of the theory of detection of the spatially extended objects using the technique of the optical transfer functions. The atmospheric OTF is estimated in the small–angle approximation.It is shown that in the case of determining the characteristics of the detection of small (100–200 m) objects in the horizontally homogeneous scattering atmosphere one should take into account only the OTF of the optical system and neglect the atmospheric spatial–frequency characteristics. In the case of detection of the objects whose linear dimensions are of the order of 500 m under the same conditions the additional contribution of the scattered radiation results in the change of the detection characteristics by 20% and more, whereas one can neglect the effect of the OTF of the optical system on the detection characteristics.