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Clutter In Radar Pdf Free

 
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MessagePosté le: Mar 27 Sep - 22:14 (2016)    Sujet du message: Clutter In Radar Pdf Free Répondre en citant




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S C = 4 10 − 7 cos ⁡ ψ R τ θ σ σ o {displaystyle {frac {S}{C}}=4times 10^{-7}{frac {cos psi }{Rtau theta }}{frac {sigma }{sigma ^{o}}}} . Sea-Clutter can be seen here in the picture. Contents 1 Backscatter coefficient 2 Clutter-limited or noise-limited radar 3 Volume clutter 3.1 Problems in calculating signal to volume clutter ratio 4 Surface clutter 4.1 Beam filling 4.2 Pulse length limited case 4.3 Problems in calculating clutter for the pulse length limited case 4.4 Beam width limited case 4.5 General problems in calculating surface clutter 5 See also . where. Surface clutter[edit]. Beam width limited case[edit]. Volume Clutter Weather or chaff are typical volume clutter. The definition of clutter depends on the function of the radar.

For a target close to the Earth's surface such that the earth and target are in the same range resolution cell one of two conditions are possible. Typically non-homogeneous clutter is generated by tall buildings in built up areas. As in the case of Volume Clutter the Signal to clutter ratio follows an inverse square law. The volume of the illuminated cell is thus:. Clutter-limited or noise-limited radar[edit]. with a resulting expression for the signal to clutter ratio of. S C = 5.25 10 4 1 θ o 2 R 2 σ σ o {displaystyle {frac {S}{C}}=5.25times 10^{4}{frac {1}{theta ^{o2}R^{2}}}{frac {sigma }{sigma ^{o}}}} . Only if the data word has changed fundamentally, the echo-blip is shown on the screen.. One would need to know how the rain was distributed to make any accurate assessment of the clutter and the signal to clutter ratio. For the pulse length limited case the area illuminated depends upon the azimuth width of the beam and the length of the pulse, measured along the surface.

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